Test Considerations; Testhead Connections - Keithley 2520 Service Manual

Model 2520 Pulsed Laser Diode Test System Service Manual

Test considerations

When performing the verification procedures:
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WARNING

Testhead connections

The Model 2520 mainframe must be connected to the testhead in order to perform the
verification procedures. Using
follows:
CAUTION
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WARNING
NOTE
Restore factory front panel defaults as previously outlined.
Ensure test equipment is fully warmed up and properly connected to the correct
Model 2520 terminals as required.
Allow signals to settle before making a measurement.
Do not connect test equipment to the Model 2520 through a scanner, multiplexer,
or other switching equipment.
The maximum common-mode voltage (voltage between LO and
chassis ground) is ±10V DC. Exceeding this value may cause a shock
hazard.
Make sure power is turned off before making connections.
Connect mainframe TESTHEAD CONN 1 to testhead MAINFRAME CONN 1.
Connect mainframe TESTHEAD CONN 2 to testhead MAINFRAME CONN 2.
Short pins 1 and 9 of the REMOTE INTERLOCK connector. Insert the key in the
KEY INTERLOCK and rotate to the ENABLED position to enable operation.
Shorting the interlock connector will disable the interlocks. Use
caution when performing verification tests.
Both interlocks must be enabled to perform the verification tests.
Figure 1-1 as a guide, make testhead connections as
Performance Verification 1-7