Keysight Technologies N8480 Series, Operating And Service Manual

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3 Service
52 N8480 Series Power Sensors Operating and Service Guide
9
Disconnect the DUT from the power meter 1 mW calibrator.
10
Terminate the DUT with the 50 MHz, 50
Ω
load.
(This step is compulsory for N8488A but optional for N8481A, N8481B,
N8481H, N8482A, N8482B, N8482H, N8485A, N8487A, N8486AR, and
N8486AQ.)
11 Perform zeroing for the DUT by sending “
CAL:ZERO:AUTO ONCE
”.
12
Set the DUT to the single trigger mode by sending “ INIT:CONT OFF ”.
13
Read the noise level of the DUT by sending “ READ? ” and then record
the reading.
14 Repeat step 13 for 10 times and then calculate the mean value of the
readings.
15 Compare the calculated mean value to the system specification. If the
test fails, refer to
“Repair” on page 59 .