Power Requirements; Pca Jumpers And Switches - HP 3000 Series Installation And Service Manual

Installation
2-3. Power Requirements
The HP 30020A INP requires the following operating power:
Supply Current (amps)
Regular
/
Backup
+ 5V at 2.55 / 0.0
+12V
at
0.58
/
0.0
-12V
at
0.12 /
0.0
+ 5VB at 0.67
/
0.49
+12VB at 0.21 / 0.04
-12VB at 0.02 / 0.01
The INP PCA obtains its operating power directly from the
computer system power supply. All HP 3000 Series 30 and Series
33 Computer Systems have an adequate power supply to accommodate
the addition of an INP or multiple INPs (two INP subsystems in
the same HP 3000/30 and up to seven INP subsystems in the same HP
3000/33) without the need for any power supply modification.
2-4. peA Jumpers and Switches
The jumpers used on the INP PCA board have all been preset during
board calibration at the factory, and no field alterations are
required. There are, however, several switches on the INP PCA
board that must be manually set to configure the INP for your
specifio system and application. They include the following:
• HP.-IB address switch (a single rotary sw itch)
• Rocker switch pack (10 switches)
Figure 2-1 shows the location of these switches.
Set the switches as follows before installing the PCA board in
the computer card cage.
a. The HP-IB address switch is a thumbwheel switch with eight
numbered positions (0 through 7). The setting of this switch
identifies the device number assigned to this INP and is read
by the processor. Rotate the switch to display the appro-
priate number as shown in table .2-1.
2-2