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Electrical and Physical
Specifications
Direct Current
Requirements
Physical Dimensions
Environmental
Specifications
Firmware
Equipment
Supplied
1-4 General Information
Typical
+
Two a
Voltage
Current
(Standard Deviation)
+5
1.380 A
+12
0.084
A
-12
0.125
A
Length:
17.72cm
Width:
17.70cm
1hickness:
2.95mm
Weight (card only):
270
grams
2.298
A
0.159
A
0.150
A
(7
in)
(7
in)
(0.12
in)
(9.5 oz)
The
MUX
card is sensitive to humidity and temperature. The card
operates between
0
and SOOC and should be stored only where the
temperature
will
range from
-40
to 7SOC. Humidity
(@
4<rC non-
condensing) should be maintained between 5% and 95%.
The PCA includes one EPROM (Erasable, Programmable, Read Only
Memory) chip. The EPROM contains the on board self test and
download monitor programs. Self test is described
in Chapter 4,
"Troubleshooting".; The download monitor directs the downloading of
control codes for board operation and insures that they are correct and
stored properly. The EPROM also provides enough on board intelligence
to use port 0 for communications with a terminal. This feature is typically
used for the system control console for the initial system boot-up.
The HP 27140A is designed for HP 9000 Series
500
computers:
Description
Multiplexer PCA
RS-232-C Junction Panel
Cable, PCA-to-Panel, 1 metre
This Reference Manual
Part Number
27140-60001
28659-60005
28659-63002
27140-90007
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