Extron electronic Power Supply PS 123 User Manual
User’s Guide  
PS 123  
12 VDC, 3 Amp Power Supply  
Extron Electronics, USA  
1230 South Lewis Street  
Anaheim, CA 92805  
800.633.9876 714.491.1500  
FAX 714.491.1517  
Extron Electronics, Europe  
Beeldschermweg 6C  
3821 AH Amersfoort, The Netherlands  
+800.3987.6673 +31.33.453.4040  
FAX +31.33.453.4050  
Extron Electronics, Asia  
135 Joo Seng Rd. #04-01  
PM Industrial Bldg., Singapore 368363  
+800.7339.8766 +65.6383.4400  
FAX +65.6383.4664  
Extron Electronics, Japan  
Kyodo Building, 16 Ichibancho  
Chiyoda-ku, Tokyo 102-0082  
Japan  
68-1253-01 Rev. C  
07 07  
+81.3.3511.7655 FAX +81.3.3511.7656  
www.extron.com  
© 2007 Extron Electronics. All rights reserved.  
 
FCC Class A Notice  
Note: This equipment has been tested and found to comply with the limits for a  
Class A digital device, pursuant to part 15 of the FCC Rules. These limits are designed  
to provide reasonable protection against harmful interference when the equipment is  
operated in a commercial environment. This equipment generates, uses and can radiate  
radio frequency energy and, if not installed and used in accordance with the instruction  
manual, may cause harmful interference to radio communications. Operation of this  
equipment in a residential area is likely to cause harmful interference, in which case the  
user will be required to correct the interference at his own expense.  
Note: This unit was tested with shielded cables on the peripheral devices. Shielded  
cables must be used with the unit to ensure compliance.  
 
Table of Contents  
Introduction..................................................................................... 1  
Front and Rear Panel Features.................................................. 1  
LED indicators............................................................................ 2  
Power.......................................................................................... 2  
Outputs....................................................................................... 3  
Connections..................................................................................... 3  
Input power — using the IEC power cord................................ 3  
Input power — using the Flexible Conduit Adapter Kit......... 3  
UL requirements.........................................................................4  
Installing the flexible conduit cable..........................................4  
Output power — wiring the DC output connectors............... 7  
Mounting options......................................................................... 8  
Rack mounting........................................................................... 8  
UL rack mounting requirements................................................8  
Rack mounting procedure..........................................................9  
Under-desk mounting.............................................................. 10  
Projector mounting.................................................................. 11  
PMK 350....................................................................................11  
PMK 450....................................................................................13  
Specifications................................................................................ 16  
Included Parts............................................................................... 17  
Accessories..................................................................................... 17  
All trademarks mentioned in this manual are the properties of their respective owners.  
68-1253-01.Rev. C  
07.07  
PS 123 12 VDC, 3 Amp Power Supply • Table of Contents  
i
 
Table of Contents, cont’d  
Introduction  
The Extron PS 123 is a high performance, plenum rated,  
DC power supply that accepts a 100 VAC to 240 VAC input and  
outputs 12 VDC, 3 amp maximum for the total current of the  
eight outputs. The DC outputs are on two-pole captive screw  
connectors, with no per-output current limitation. Two-tone  
LEDs on the front and rear panel indicate normal operation  
(green) and overload operation (red).  
The rack mountable PS 123 has a 1U high, quarter rack wide,  
8.5" deep metal enclosure, allowing the PS 123 to take advantage  
of a variety of mounting options.  
Front and Rear Panel Features  
All power and output connections are on the rear panel. LEDs  
show power status on the front and rear of the power supply  
(figure 1, a).  
RED-OVERLOAD  
1
PS 123  
12 VDC 3A POWER SUPPLY  
PS 123 Front Panel  
1
100-240  
50/60Hz 1A MAX.  
OUTPUTS  
4
2
RED-  
OVERLOAD  
12 VDC TOTAL OUTPUT 3A  
PS 123 Rear Panel With IEC Plate  
1
100-240  
50/60Hz 1A MAX.  
OUTPUTS  
4
3
RED-  
OVERLOAD  
12 VDC TOTAL OUTPUT 3A  
PS 123 Rear Panel With EMT Adapter Plate  
Figure 1 — PS 123 front and rear panels  
PS 123 12 VDC, 3 Amp Power Supply • Table of Contents  
PS 123 12 VDC, 3 Amp Power Supply • User's Guide  
ii  
ꢀ
 
 
PS ꢀ23, cont’d  
LED indicators  
Outputs  
See the illustrations on page 1.  
DC Output connectors — Connect the power cables from the  
devices that will receive power from the PS 123 to these 3.5 mm  
captive screw connectors.  
d
Power status LEDs — These front and rear panel LEDs indicate  
the PS 123's status by lighting as follows:  
a
• Green when power is applied and operation is normal  
• Red when applied power causes a current overload condition  
The PS 123 supports up to eight power supply outputs. For  
details on limitations and how to wire these captive screw  
connectors, see “Output power — wiring the DC output  
connectors,” on page 7.  
Continued operation in an overload condition  
causes premature power supply failure.  
C
• Unlit when an output is shorted  
To identify the shorted output, unplug the outputs one at  
a time until the LEDs light green.  
Connections  
N
Input power — using the IEC power cord  
Use the included IEC power cord to connect the PS 123 to a  
100 VAC to 240 VAC, 50/60 Hz power source.  
Power  
You can apply power to the PS 123 either by using the supplied  
IEC power cord (b) or by installing the optional Flexible  
Conduit Adapter Kit (Extron part #70-228-02) (c).  
Make sure that the source device, the PS 123, and all output  
devices are turned off and disconnected from the power source  
before you begin.  
The circuit breaker used for this connection should  
be rated no lower than 20 amps.  
IEC connector/power supply — Plug the external IEC cord into  
this connector and a 100–240 VDC source.  
W
b
c
-OR-  
Optional conduit EMT adapter plate — The IEC connector  
and EMT plate can be replaced by this half-inch conduit EMT  
adapter plate, as shown in figure 2. See “Input power — using  
the Flexible Conduit Adapter Kit,” on the next page.  
Input power — using the Flexible Conduit Adapter  
Kit  
The optional Flexible Conduit Adapter Kit consists of  
L 4lnm a
• One EMT adaptor plate  
• One 6-foot long electrical conduit  
• Three 7.5 feet, 18-gauge spade connector power wires  
• One UL rated zip tie wrap  
Extron  
This plate can be replaced  
PS 123  
with an optional flex conduit  
12 VDC 3 A Power Supply  
kit, part #70-228-02,  
for plenum applications.  
100-240  
50/60Hz 1A MAX.  
OUTPUTS  
• Three auxiliary crimp style spade connectors designed for  
14- to 16-gauge wires  
RED-  
OVERLOAD  
12 VDC TOTAL OUTPUT 3A  
If needed, Extron recommends using a UL-rated  
crimp tool to terminate the spade connectors. One  
recommended choice is the Molex crimp tool (Molex part  
#19285-0008).  
N
1
2
3
4
5
6
7
8
The kit provides a convenient means to replace the PS 123 IEC  
power cord with conduit, where required by local codes.  
100-240  
50/60Hz 1A MAX.  
OUTPUTS  
RED-  
OVERLOAD  
Make sure that the source device, the PS 123, and all output  
devices are turned off and disconnected from the power source  
before you begin.  
12 VDC TOTAL OUTPUT 3A  
N
With the Flexible Conduit  
Adapter kit, the PS 123 meets  
the UL 2043 requirements.  
The circuit breaker used for this connection should  
be rated no lower than 20 amps.  
W
Figure 2 — Using the conduit option for the PS 123  
PS 123 12 VDC, 3 Amp Power Supply • User's Guide  
PS 123 12 VDC, 3 Amp Power Supply • User's Guide  
2
3
 
 
PS ꢀ23, cont’d  
Installation and service must be performed by a  
qualified electrician only.  
Lift the cover  
straight up.  
W
A UL listed electrical distribution box is  
recommended for the termination of the conduit  
opposite the PS 123 power supply. See "UL  
requirements," below.  
C
UL requirements  
The Underwriters Laboratories (UL) requirements listed below  
pertain to the installation of the flexible conduit onto a PS 123  
power supply.  
Remove three  
screws on  
each side.  
• This unit is not to be used beyond its rated voltage range.  
• This unit must be wired to a UL listed distribution box.  
23  
P/S PP  
1
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The UL approved electrical distribution box is not  
-
D
N
E
R
included with either the PS 123 power supply or the  
Flexible Conduit Adapter Kit; the installer is responsible  
for obtaining and installing the box.  
Figure 4 — Removing the top cover  
• This unit must be installed in accordance with the National  
Electrical Code and with all local codes.  
4.  
Carefully lift the top cover up, taking care not to remove it  
completely.  
Installing the flexible conduit cable  
Rough handling of the top cover can tear the wiring  
that connects the front panel LED.  
Install the flexible conduit cable assembly to the PS 123 as  
follows:  
C
1.  
2.  
Unplug the IEC power cord.  
5.  
Use the Phillips head end of an Extron Tweeker or a small  
standard screwdriver to loosen the screws holding the hot  
and neutral wires on the side of the terminal block nearest  
the EMT plate opening (figure 5).  
Remove and retain the two Phillips head screws that  
secure the EMT plate (figure 3, below) to the PS 123 rear  
panel.  
Terminal Block  
Hot Terminal  
EMT Plate  
100-240  
50/60Hz 1A MAX.  
OUTPUTS  
RED-  
OVERLOAD  
12 VDC TOTAL OUTPUT 3A  
Remove two screws.  
Figure 3 — Removing the EMT plate  
Neutral Terminal  
Ground Wire Nut  
3.  
Remove and retain the six screws that connect the top  
cover of the PS 123 to its bottom board (figure 4, on the  
next page).  
Figure 5 — Terminal block and IEC wiring  
6.  
Unscrew the EMT plate ground wire from the ground wire  
nut on the bare metal bottom of the PS 123 enclosure.  
PS 123 12 VDC, 3 Amp Power Supply • User's Guide  
PS 123 12 VDC, 3 Amp Power Supply • User's Guide  
ꢁ
ꢂ
 
 
PS ꢀ23, cont’d  
7.  
8.  
9.  
From the rear panel end, pull the EMT plate (see figure 3)  
out of the enclosure.  
15. Use the six screws you removed in step 3 to secure  
the top cover of the PS 123 back onto its bottom board  
(figure 4 on page 5).  
Thread the 18-gauge power wires through the length of the  
electrical conduit tube.  
Output power — wiring the DC output connectors  
Install the EMT adapter plate (figure 1, c, on page 1)  
The PS 123 can power multiple products through its 3.5 mm,  
2-pole captive screw connectors.  
(with conduit attached) into the opening from which you  
removed the EMT plate in step 7. Use the Phillips head  
screws (figure 3) that you removed in step 2 to attach the  
adapter plate.  
For applications in which power supply voltage  
is critical, verify the power cord’s polarity before  
connecting it by plugging in the power supply with no  
load. Check the output with a voltmeter.  
N
10. Slide the conduit nut (figure 6, below) over the bundle of  
wires exiting the conduit and onto the conduit itself inside  
the PS 123. Hand-tighten the nut.  
If you are verifying power supply polarity with a  
voltmeter, the two power cord wires must be kept  
separate while the power supply is plugged in.  
W
Metal Tab  
Terminal Block  
Hot Terminal  
To connect products to the outputs of the PS 123, do the  
following:  
1.  
2.  
Cut the DC output cord to the length required.  
Strip the jacket of the conductor wire to expose 5/16"  
(7 mm) of the wire (figure 7).  
Tie Wrap  
Smooth  
Ridges  
Neutral Terminal  
Conduit Nut  
Ground Wire Nut  
A
A
Figure 6 — Terminal block and conduit wiring  
SECTION A–A  
11. Attach and screw down the hot and neutral wires exiting  
from the conduit to their corresponding screws on the  
terminal block.  
Power Supply  
Output Cord  
Tie Wrap  
Ensure that you observe wire polarity. Figure 6  
shows the location of the neutral and hot poles on  
the mother board connector. The conduit wiring  
harness' neutral wire is identified with a tag marked  
"N" (neutral).  
W
Orange Captive Screw  
Connector  
12. Attach the ground wire from the conduit to the PS 123's  
bare metal plate bottom, securing it by reattaching the  
ground wire nut.  
Figure 7 — Power connector wiring  
The ideal length of exposed wire is 5/16"  
(7 mm). Exposing more than the specified length  
of the copper wires could allow the stripped wires to  
touch each other, causing a short circuit. This could  
result in the external DC power supply overheating  
and/or burning.  
W
13. Thread a tie wrap through the metal tab on the bare metal  
bottom of the PS 123, place all the wires within its cradle,  
and zip the tie wrap over the bundle of wires.  
14. Retighten the conduit nut from step 10 (figure 6 above) to  
ensure that it firmly secures the conduit EMT adapter plate  
to the power supply.  
PS 123 12 VDC, 3 Amp Power Supply • User's Guide  
PS 123 12 VDC, 3 Amp Power Supply • User's Guide  
ꢃ
ꢄ
 
 
PS ꢀ23, cont’d  
•
•
Mechanical loading — Mounting of the equipment in  
the rack should be such that a hazardous condition is not  
created due to uneven mechanical loading.  
Stripping the wires to expose less than the  
recommended amount may cause them to slide out  
of the connector too easily, even if they are tightly  
pinched by the captive screws.  
C
Circuit overloading — Consideration should be given to  
the connection of the equipment to the supply circuit and  
the effect that overloading of the circuits might have on  
overcurrent protection and supply wiring. Appropriate  
consideration of equipment nameplate ratings should be  
used when addressing this concern.  
Do not tin the stripped power supply leads before  
attaching the captive screw plug to them. Tinned  
wires are not as secure in the captive screw  
connectors and can be easily pulled out. They may  
also break after being bent several times.  
C
•
Reliable earthing (grounding) — Reliable earthing  
of rack-mounted equipment should be maintained.  
Particular attention should be given to supply connections  
other than direct connections to the branch circuit (e.g. use  
of power strips.  
3.  
4.  
Slide the leads into the supplied 2-pin captive screw plug  
and secure them, using an Extron Tweeker or other small  
screwdriver.  
Use the supplied tie wrap to strap the power cord to the  
extended tail of the connector.  
Rack mounting procedure  
For optional rack mounting, mount up to four PS 123s on  
an RSU 129 9.5" 1U Universal Rack Shelf (part #60-190-01)  
(figure 8) or an RSB 129 9.5" 1U Basic Rack Shelf (part  
#60-604-01).  
Mounting options  
There are several optional accessories for mounting the PS 123.  
They include the following Extron part numbers:  
• RSU 129 1U 9.5" Universal Rack Shelf (part #60-190-01)  
• RSB 129 1U 9.5” Deep Basic Rack Shelf (part #60-604-01)  
• MBU 125 1U Under-Desk Mounting  
• PMK 350 Low Profile Multi-product  
Projector Mounting Kit  
1U Universal Rack Shelf  
1/2 Rack Width Front False  
(part #70-077-01)  
(part #70-563-02, -03)  
Faceplate  
1/4 Rack Width Front False  
Faceplate  
• PMK 450 Easy Installation  
(part #70-618-02, -03)  
Multi-product Projector Mounting Kit  
Rack mounting  
UL rack mounting requirements  
Both front false faceplates  
use 2 screws.  
The following Underwriters Laboratories (UL) requirements  
pertain to the installation of the PS 123 into a rack.  
•
Elevated operating ambient temperature — If the  
equipment is installed in a closed or multiunit rack  
assembly, the operating ambient temperature of the  
rack environment may be greater than room ambient  
temperature.  
(2) 4-40 x 3/16"  
Screws  
Use 2 mounting holes on  
opposite corners.  
Therefore, consider installing the equipment in an  
environment compatible with the maximum ambient  
temperature (Tma) specified by the manufacturer. For the  
PS 123, the Tma is 122 °F (50 °C).  
Figure 8 — Rack mounting the PS 123  
1.  
If feet were previously installed on the bottom of the  
PS 123 unit, remove them.  
•
Reduced air flow — Installation of the equipment in a rack  
should be such that the amount of air flow required for  
safe operation of the equipment is not compromised.  
PS 123 12 VDC, 3 Amp Power Supply • User's Guide  
PS 123 12 VDC, 3 Amp Power Supply • User's Guide  
ꢅ
ꢆ
 
 
PS ꢀ23, cont’d  
2.  
3.  
Mount the PS 123 on the rack shelf, using two 4-40 x 3/16"  
screws in opposite (diagonal) corners.  
5.  
6.  
Align the mounting screws with the slots in the brackets  
and place the power supply against the surface, with the  
screws through the bracket slots.  
If necessary, mount the half rack width false front panel  
(included with the Universal Rack Shelf only) and/or the  
quarter rack width false front panel (included with the  
PS 123) to the shelf, using two 4-40 x 3/16" screws in the  
front holes for each panel.  
Slide the unit slightly forward or back, then tighten all four  
screws to secure it in place.  
Projector mounting  
PMK 3ꢂ0  
Under-desk mounting  
The PMK 350 is an above-projector mounting kit that attaches  
In addition to using the PS 123 power supply on a rack or  
to a 1" to 2" diameter projector mounting pole (figure 10). It can  
hold more than one device, in a variety of sizes. The PMK 350 is  
available in black (part #70-563-02) or white (part #70-563-03).  
projector, it can also be mounted under furniture (such as a  
desk) using the MBU 125 Under-Desk Mounting Kit (part  
#70-077-01). To mount the PS 123 under a desk or other  
furniture, follow these steps:  
Extron  
IPL T S2  
1.  
Attach the mounting brackets to the power supply with  
the provided machine screws (figure 9).  
Ethernet Control  
Interface  
Extron  
PS 123  
2.  
Hold the power supply with the attached brackets against  
the underside of the furniture. Mark the location of the  
screw holes of the bracket on the mounting surface.  
12 VDC 3 A  
Power Supply  
Rear Plate  
3.  
4.  
Drill 3/32" (2 mm) diameter pilot holes, 1/4" (6.3 mm)  
deep in the mounting surface at the marked screw  
locations.  
1
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ID  
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2
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P
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2
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PSU  
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12  
Insert #8 wood screws into the four pilot holes. Tighten  
each screw into the mounting surface until just less than  
1/4" of the screw head protrudes.  
D
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-O  
D
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Extron  
PMK 350  
Multi-product Projector  
Mounting Kit  
U-bolt  
E
L
B
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S
S
22  
A
1
B
A
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P
M
IE  
IF  
M
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ER  
I
IN  
ST  
M
ON  
AL  
DU  
O
N
R
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IT  
IM  
L
F
OF  
Extron  
MPA 122  
Mini Power Amplifier  
Front Plate  
Figure 10 — Projector mounting the PS 123  
Follow these steps to mount the PS 123 onto the PMK 350  
bracket:  
1.  
Remove the front and back plates from the PMK 350  
(figure 10), using an Extron Tweeker or a #2 Phillips  
screwdriver. Retain the screws to reattach the plates when  
you are finished.  
2.  
3.  
If necessary, remove the feet from the bottom of the PS 123.  
Secure the unit to one side of the mounting tray, using two  
of the 4-40 x 3/16" screws in opposite (diagonal) corners.  
Figure 9 — Under-desk mounting the PS 123  
4.  
Place the PMK 350 around the projector ceiling mounting  
pole (figure 10, above).  
PS 123 12 VDC, 3 Amp Power Supply • User's Guide  
PS 123 12 VDC, 3 Amp Power Supply • User's Guide  
ꢀ0  
ꢀꢀ  
 
 
PS ꢀ23, cont’d  
5.  
Assemble the U-bolt and the following parts in the  
following order (figure 11, below):  
9.  
Secure the front panel to the mounting tray with four of  
the included #6 screws.  
a. Pass the legs of the U-bolt through the slotted holes on  
10. If desired, choose one of the provided four sizes of self-  
adhesive cover sheets, and apply it to the underside of the  
mounting tray.  
the mount plate flange.  
b. Place the legs around the projector pole.  
c. Pass the legs through the holes in the contour base.  
PMK ꢁꢂ0  
The pole fits snugly into the depression in the center of  
the contoured base.  
The Extron PMK 450 Easy Installation Multi-Product Projector  
Mounting Kit attaches to projector mounting poles with external  
diameters of 1.85" (4.7 cm) to 1.95" (5 cm). It can accommodate  
multiple Extron products of a variety of sizes, and their power  
supplies.  
N
d. Pass the legs through the holes in the L-shaped bracket.  
•
•
For a typical (1.5" to 2.0" diameter) pole — You  
can use the supplied square U-bolt, which fits a  
typical ceiling pole.  
Top Plate  
For a smaller pole — Locally obtain a square  
U-bolt that fits your ceiling pole. The slotted holes  
on the bracket can accommodate a square U-bolt  
for pole sizes from 1.0" to 2.0" in diameter.  
Pipe Collar and  
Set Screws (4)  
AC Power Cord  
Access Slot  
Mount Plate  
Flange  
Front Plate  
Contoured  
Base  
U-bolt  
L-shaped  
Bracket  
Security Screw  
Rear Plate  
Slotted Hole  
in PMK Tray  
L-shaped  
Bracket Scre  
Extron  
PS 123  
Extron  
IPL T S2  
Ethernet Control  
Interface  
12 VDC, 3 A  
Power Supply  
Ceiling  
Pole  
1
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X
A
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A
Figure 11 — Projector mounting the PS 123  
6.  
Align the two slotted holes in the bottom of the L-shaped  
bracket with the two slotted holes in the base of the tray.  
Secure the L-bracket to the base by inserting two provided  
6-32 x 5/16" screws through the aligned slots.  
Bottom Plate  
Filler Plate  
7.  
8.  
Move the PMK 350 up to the desired location on the ceiling  
pole, as close to the ceiling as desired.  
Figure 12 — Components of the Extron PMK 450 kit  
Secure the L-shaped bracket to the U-bolt using the  
included hex nuts, washers, and lock washers. Tighten the  
hex nuts securely.  
1.  
2.  
Using a Phillips screwdriver, remove the front and rear  
plates.  
Using the provided security wrench, remove the security  
screws from the sides. Slide the top plate and lift it away  
from the bottom plate.  
Be sure to tighten the hex nuts securely enough that  
the PMK 350 does not slide down the ceiling pole.  
A socket wrench is recommended to tighten the hex  
nuts.  
C
3.  
Loosen the four pipe collar set screws to allow the top  
plate to move freely along the pole.  
PS 123 12 VDC, 3 Amp Power Supply • User's Guide  
PS 123 12 VDC, 3 Amp Power Supply • User's Guide  
ꢀ2  
ꢀ3  
 
 
PS ꢀ23, cont’d  
4.  
5.  
6.  
7.  
Ensure that the cables exit the end of the pipe and not the  
cable access hole.  
12. Once all cables are routed, insert the lugs on the bottom  
plate into the slots on the top plate and slide the bottom  
plate into position.  
Remove any rubber feet from the bottom of the device(s) to  
be mounted.  
Secure the device(s) to the bottom plate with the provided  
screws.  
Slots (4)  
Slide the top plate up the pipe until the pipe collar is  
positioned just below the cable access hole. Tighten the  
set screws until they just grip the pipe. At least three set  
screws must come in contact with the pipe.  
Lugs (4)  
8.  
Ensure that the front of the top plate is facing toward the  
projector screen. This may require turning the pipe with a  
wrench. When the top plate is level and correctly oriented,  
secure it by fully tightening the set screws.  
Cable Input from  
Ceiling (AV control)  
Bottom Plate  
Figure 14 — Attaching PMK 450 bottom plate to the  
top plate  
FRONT  
1
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13. Lock the top and bottom plates together with the security  
2
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C
2
5
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0
1
M
2
1
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A
3
0
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C
D
0
#
V
ID  
X
R
12  
U
X
N
T
A
D
A
L
X
R
LO  
X
R
E
T
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-O  
ED  
R
R
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screws and reattach the front and rear plates.  
M
.5  
Filler Plate  
Cable Access  
Hole  
REAR  
Cable Output  
to Projector  
Figure 13 — Routing the cables for the PMK 450  
9.  
Reroute the cables so that they exit the pipe through the  
cable access hole.  
10. Connect the cables to the device(s.) Pull excess cable back  
into the ceiling.  
11. Feed the device(s) output cables to the projector through  
the cable access hole and out through the bottom of the  
pipe.  
PS 123 12 VDC, 3 Amp Power Supply • User's Guide  
PS 123 12 VDC, 3 Amp Power Supply • User's Guide  
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PS ꢀ23, cont’d  
Specifications  
Included Parts  
These items are included in each order for a PS 123 power  
supply:  
General  
Power input ................................... 100 VAC to 240 VAC, 50/60 Hz, internal,  
autoswitchable, 1 A maximum  
Included parts  
Part number  
Without a load: 3.6 watts  
With a full load on all outputs: 42 watts  
PS 123 Power Supply  
60-814-01  
Power output................................. 12 VDC, 3 A maximum total current of the  
8 outputs  
(8) Female, 3.5 mm, 2-pole  
captive screw connector  
10-702-10LF  
Maximum output current is rated at an ambient temperature of  
40 °C. It decreases to 2 A at an ambient temperature of 50 °C.  
N
(4) Rubber feet (not attached)  
IEC power cord  
Temperature/humidity................ Storage: -40 to +158 °F (-40 to +70 °C) /  
10% to 90%, noncondensing  
Tweeker (small screwdriver)  
PS 123 User’s Guide  
Operating: +32 to +122 °F (0 to +50 °C) /  
10% to 90%, noncondensing  
Accessories  
Rack mount.................................... Yes, with optional 1U, 9.5" deep rack shelf,  
part #60-190-01 or 60-604-01.  
Accessories  
Part number  
Also furniture mountable with optional  
brackets, part #70-077-01.  
Flexible Conduit Adapter Kit  
70-228-02  
Above-projector mountable with optional  
PMK 350 Low Profile Projector Mounting  
Kit (part #70-563-02, 03) or PMK 450 Easy  
Installation Projector Mounting Kit (part  
#70-618-02, -03)  
PMK 350 Low Profile Multi-product Projector Mount Kit  
Black  
70-563-02  
70-563-03  
White  
PMK 450 Easy Install Multi-product Projector Mount Kit  
Enclosure type .............................. Metal  
Enclosure dimensions .................. 1.75" H x 4.3" W x 8.5" D  
(1U high, quarter rack wide)  
4.4 cm H x 11.0 cm W x 21.6 cm D  
(Depth excludes connectors.)  
Product weight .............................. 1.2 lbs (0.5 kg)  
Shipping weight ........................... 3 lbs (2 kg)  
Black  
70-618-02  
70-618-03  
60-190-01  
60-604-01  
70-077-01  
White  
RSU 129 1U 9.5" Universal rack shelf  
RSB 129 1U 9.5" Deep Basic Rack Shelf  
MBU 125 1U Under-Desk Mounting Kit  
Vibration ........................................ ISTA 1A in carton  
(International Safe Transit Association)  
Listings............................................ UL 60950  
Compliances................................... CE, FCC Class A, VCCI, AS/NZS, ICES  
MTBF............................................... 30,000 hours  
Warranty ........................................ 3 years parts and labor  
All nominal levels are at 10%.  
N
N
Specifications are subject to change without notice.  
PS 123 12 VDC, 3 Amp Power Supply • User's Guide  
PS 123 12 VDC, 3 Amp Power Supply • User's Guide  
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PS 123 12 VDC, 3 Amp Power Supply • User's Guide  
PS 123 12 VDC, 3 Amp Power Supply • User's Guide  
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PS 123 12 VDC, 3 Amp Power Supply • User's Guide  
20  
 

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