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Trigger Port Check
Check the functionality the internal trigger switch for the 86100A/B/C mainframe. This switch is
used to direct free run, left module, right module, and front panel trigger sources to the trigger
circuitry of the mainframe. This is a functional check of the switch with a pass or fail result.
N O T E
The Trigger Port Check is only required when your normal measurements are performed using an
54750-series module, 83480-series module, 83490-series module, or an 86108A module. If you
do not have one of these modules or if you use a different module, such as an 86117A, it is
recommended that you omit this check.
Equipment List
• 83712B 20 GHz Synthesized CW generator opt 1E1, 1E5, 1E8, 1E9
• 11667B Power Splitter
• 83483A Dual Electrical Module
Manual Procedure
1 Connect the output of the 83712B to the input of the 11667B.
2 Connect one output of the 11667B to the channel 2 input of the 83483A.
3 Connect the other output of the 11667B to the right module trigger input of the DCA.
4 Set the 83712B to 2.5 GHz and +2.50 dBm and turn RF output on.
5 Set the DCA to default setup then 50 mV/div, 100 ps/div, and trigger source to freerun.
6 Check to see if the DCA is triggering. This is noticed by about 350 mVp-p noise level on the
screen.
7 Set the DCA trigger source to the right module and check to see if the DCA is triggering. This is
noticed by the Trig'd light being on and 2.5 cycles of a sine wave on the screen at about 350 mVp-
p.
8 Remove the input to the right module trigger input and connect it to the left module trigger input.
9 Set the DCA trigger source to the left module and check to see if the DCA is triggering. This is
noticed by the Trig'd light being on and 2.5 cycles of a sine wave on the screen at about 350 mVp-
p.
10 Remove the input to the left module trigger input and connect it to the front panel trigger input.
11 Set the DCA trigger source to the front panel and check to see if the DCA is triggering. This is
noticed by the Trig'd light being on and 2.5 cycles of a sine wave on the screen at about 350 mVp-
p.
Software
1 Verify the Model and Serial number of the DCA.
2 Prompt the user to connect the following Cables:
Performance Verification
Trigger Port Check
4-13
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