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Test Limit
Equipment List
• ET55457
• BNC Cable
• BNC T
• 34401A DMM
Manual Procedure
1 Insert ET55457 into the left slot of the DCA.
2 Connect the output of the DCA calibrator output to the BNC T.
3 Connect the input to ET-51703B to one end of the BNC T.
4 Connect the other end of the BNC T to the 34401A DMM.
5 Execute a default setup on the DCA.
6 Set the DCA to Freerun
7 Set the DCA to 200 ns delay.
8 Set the DCA to the first Calibrator output voltage.
9 Take a DC voltage reading on the 34401A.
10 Take an Average Power Monitor measurement on channel 1 on the DCA.
11 Repeat steps 5 to 7 for all of the calibrator input voltages.
12 Remove ET55457 from the left slot and insert it into the right slot (channel 3) of the DCA.
Optical Power Check, Slot 1 and 2
Measure the accuracy of the Average Power Monitor circuitry on the DCA. By using an Electri-
cal Tester (ET) in the place of a module, a known electrical signal from the DCA Calibrator is
input through the ET to the mainframe's average power monitor circuitry.
Minimum Specification
– (
8.15 W/V
Maximum Specification for Output Voltage
– (
8.15 W/V
Maximum Specification for Output Voltage < –0.2V
– (
8.15 W/V
) measured calibrator voltage
(
≥
–0.2V
) measured calibrator voltage
(
) measured calibrator voltage
(
Performance Verification
Optical Power Check, Slot 1 and 2
) 0.2W
–
)
+
0.8W
)
+
0.2W
4-41
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