Keithley 2750 User Manual

8-10 Triggering Model 2750 Multimeter/Switch System User’s Manual
1. Press EX TRIG to place the Model 2750 in the external trigger mode.
2. Press STEP on the Model 7002 to take it out of idle and start the scan. The scan-
ner’s output pulse triggers the Model 2750 to take a reading, store it, and send a
trigger pulse. The following explanation on operation is referenced to the operation
model shown in Figure 8-8.
Figure 8-8
Operation model for triggering example
A. Pressing EX TRIG on the Model 2750 places it at point A in the flowchart, where it
is waiting for an external trigger.
B. Pressing STEP on the Model 7002 takes it out of the idle state and places operation
at point B in the flow chart.
Wait for
Trigger Link
Trigger
Wait for
Trigger Link
Trigger
Scan
Channel
Output
Trigger
Scanned
400
Channels
?
Make
Measurement
Output
Trigger
Trigger
Bypass
Idle
No
Yes
Trigger
Model 7002
Press STEP to start scan
Model 2750
Press EX TRIG
A
B
C
D
E
F
2
1
2750-900-01.book Page 10 Wednesday, August 3, 2011 7:56 AM

Keithley 2750 Specifications

General

Interface	GPIB, RS-232, Ethernet
Switching Speed	Up to 500 channels/second
Maximum Voltage	300V
Operating Temperature	0°C to 50°C
Measurement Functions	DCV, ACV, DCI, ACI, 2-wire Resistance, 4-wire Resistance, Frequency, Temperature
Resolution	6.5 digits
Current	1A
Maximum Current	1A