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Gated Trigger Check
Verify that the BNC connector on the back of the 86100A/B/C mainframe allows for a gated trig-
ger functionality. In Gated Trigger Mode, a BNC short placed on the connector will prevent the
mainframe from triggering. When it is removed it should trigger normal
Equipment List
• 83712B 20 GHz Synthesized CW generator opt 1E1, 1E5, 1E8, 1E9
• DCA with the 83483A Dual Electrical Module in the left slot
• 11636B Power Splitter
• BNC Short
Manual Procedure
1 Insert the 83483A module in the left slot of the DCA.
2 Connect the output of the 83712B to the input of the 11636B.
3 Connect one output of the 11636B to the front panel trigger input of the DCA.
4 Connect the other output of the 11636B to channel 2 input of the 83483A.
5 Set the 83712B to 2.5 GHz at –1.51 dBm.
6 Set the DCA for the following in order listed.
a Push the Default Setup Button.
b Trigger on the Front Panel.
c Channel 2 is on and all others are off.
d On 86100C instruments, set the Trigger Bandwidth to DC–3.2 GHz. On 86100A/B instruments
7 Push the auto scale button.
N O T E
If you get a dialog box when using the auto scale then there is something wrong with your
connections or your DCA. Check your connections and push the auto scale button again. If it still
fails then there is something wrong with your DCA.
8 Verify that it is triggering. (The Trig'd light should be on and you should see a waveform on
screen.
9 Place the BNC short on the BNC connector at the back of the DCA.
10 Set DCA to enable Gated Trigger mode.
11 The DCA should not be triggering at this time. (The Trig'd light will be off and you can use the
clear screen button to clear the screen which will keep the screen black if the DCA is not
triggering).
12 Remove the BNC short.
(serial prefix below US4051), set the Trigger Bandwidth to DC–2.5 GHz. On 86100A/B in-
struments (serial prefix US4051 and above), set the Trigger Bandwidth to DC–2.75 GHz.
Performance Verification
Gated Trigger Check
4-15
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