Keysight Technologies N5247B Service Manual page 144

Troubleshooting
Measurement System Troubleshooting
3. Remove the outer cover from the analyzer. Refer to
on page
Procedures described in this document are performed with power
supplied to the product while protective covers are removed. Energy
available at many points may, if contacted, result in personal injury.
4. With the covers off, plug in the analyzer and turn on the power.
Do not operate the analyzer with the outer cover removed for more than
30 minutes, as this could cause the analyzer to overheat which could
result in costly damage.
Checking the Output Power of the A, B, C, and D Signals
Using a power meter, you can measure the outputs of the A, B, C, and D
signals from the front panel. The measurement results will help you isolate a
faulty assembly. The output of the R receiver cannot be measured because it
would necessitate breaking the phase lock loop, causing all of the signals to be
lost.
Equipment Used for This Check
Equipment Type
Power meter
Power sensor, 2.4 mm
Adapter, 2.4 mm (f) to 2.4 mm (f)
Equipment Setup
1. Before starting these checks, zero and calibrate the power meter. (See the
power meter user's guide for instructions on setting the calibration factor.)
2. If the Receiver Display
screen, perform the following: Press UTILITY
Utilities
3. Set the sweep speed for a 10 second sweep: Press STIMULUS
then
box.
4-48
7-6.
(Figure 4-8
Receiver Display
, then
Sweep Time
. Set the time to 10.000 seconds in the Sweep Time
"Removing the Covers"
Model or Alternate Model or
Part Number Part Number
E4418B/E4419B E4418A/E4419A
E8487A None
11900B 85056-60007
or Figure 4-9) is not on the analyzer
System , then
.
Keysight N5247B Service Guide
Service
, then
,
Sweep