HP 98700H CE Handbook page 6

HP·HIL Power Loading
HP-HIL, the Hewlett-Packard Human Interface Loop is the HP stan-
dard for interfacing terminals, workstations, and personal computers to
their human-input devices. HP-HIL provides a simple, asynchronous
serial communication protocol that enables the user to select a set of
input devices, connect them to a computer product, and work with any
application program with ease.
HP-HIL used with the HP 98700 is limited to seven devices on one
Loop, and the power available is 12 watts (+12 volts at 0.5 Amp). Do
not exceed this value. To assist you in determining if the devices you
want to use will overload the Loop or not, here is a table listing the
individual device power requirements:
Table 1-2. HP-HIL Device Power Requirements
Product No. Description Current Power
46020A Keyboard
100 rna
1.2 Watts
46060A Mouse
200 rna
2.4
46080A Extension Module 25 rna 0.3
46081A 3 metre Ext./ Audio 25 rna
0.3
46082A
15 metre Ext./ Audio/Video
50 rna 0.6
46082B
30 metre Ext./ Audio/Video 50 rna 0.6
46083A
Knob box
110 rna 1.32
46086A Button Box 80 rna
0.96
46087A "A" Size Digitizer 200 rna 2.4
46088A
"B" Size Digitizer 200 rna
2.4
46089A 4-Button Cursor
- -
1-2
Product Description