Keithley 2790 - Page 7

3 Keithley 7702 Switching Module
Safety precautions ...................................................................... 3-2
Card configuration ...................................................................... 3-3
Typical connections .................................................................... 3-5
Connection log .................................................................... 3-7
Opening and closing 7702 channels ........................................... 3-9
Channel assignments ........................................................... 3-9
Front panel operation ........................................................ 3-10
Remote programming ........................................................ 3-11
Viewing closed channels .......................................................... 3-12
Using 7751/7753 V-source with 7702 module ......................... 3-13
4 Switching Module Wiring and Installation
Connections and wiring .............................................................. 4-2
Screw terminals ................................................................... 4-2
Cabling requirements .......................................................... 4-3
Wiring procedure ................................................................. 4-4
Zippertubing® shield .......................................................... 4-8
Guarding .............................................................................. 4-9
Switching module installation .................................................. 4-10
Module slot considerations ................................................ 4-10
Power supply restrictions with the 7753 module .............. 4-10
Installation procedure ........................................................ 4-10
5 Inflator Testing
Introduction ................................................................................ 5-2
Test procedures .................................................................... 5-2
Closed channels for test circuits .......................................... 5-3
Test system ................................................................................. 5-3
RS-232 interface (PLC or PC) ............................................. 5-4
GPIB (PC only) ................................................................... 5-4
Test signal connections ............................................................... 5-5
Interlock ...................................................................................... 5-9
Shunt bar test ............................................................................ 5-10
Test circuit ......................................................................... 5-11
Test procedure ................................................................... 5-12
I-source readback .............................................................. 5-12
Bridgewire tests ........................................................................ 5-14
Test circuit ......................................................................... 5-14
Test procedure ................................................................... 5-15
I-source readback .............................................................. 5-16