Closed Channels For Test Circuits; Test System; Figure 5-1 System Connections - Keithley 2790 User Manual

Model 2790 SourceMeter

Closed channels for test circuits

Test circuits show which channel switches need to be closed to make the test connections.
Keep in mind that these, and only these channels must be closed for the test. All other
channels in the system must be open. As a rule, ALWAYS open all channels at the begin-
ning and end of a test.
NOTE

Test system

Figure 5-1
troller (PLC) or a PC. Connections for the test signals (and interlock) are covered in
signal
NOTE
Figure 5-1
System connections
PLC
RS-232 Cable
or PC
(DB-9)
(RS-232)
Keithley
OR 7709-5
PC
(GPIB)
GPIB Cable
KPCI-488
Interface
Cable 7008-3,
1. When using a PLC, select and configure the RS-232 interface of the 2790.
2. If using a PC, select the GPIB interface and set the address of the 2790.
3. Use a cable terminated with a female DB-9 connector to mate to the DIGITAL I/O connector of the 2790.
4. Cable must be wired as a straight-through cable (not null modem cable).
®
Switch System User's Manual
To use the DMM of the Model 2790 to measure a DUT connected to a switching
module, the front panel INPUTS switch must be in the REAR (in) position.
shows a typical test system and connections using a programmable logic con-
connections."
Only one Model 7753 can be installed in a Model 2790, and it should be installed
in slot 1. A 7753 module can be used in slot 2, but measurement accuracy might be
adversely affected because cards are always calibrated in slot 1.
4
Keithley 2790
MATH
2.790000
DIGITAL I/O
1
RS-232
2
IEEE-488
7008-6
3
DB-9 Cable
Test Signal
Slot 1
7751, 7752, or
Ω
7753 Module
Interlock
Slot 2
Test
System
Expansion
Device Handler
Mechanical
Connection
Cabling
Test Station
(with Interlock)
Inflator Under
Test
Interlock
5-3
"Test