Resetting The Mechanical Counter - Keysight Technologies N5224/5A Service Manual

Repair and Replacement Procedures
Post-Repair Procedures
Table 7-2 Related Service Procedures (Continued)
Replaced Assembly
A42–A45 bias tees
A46–A49 receiver step
attenuators
A55 solid state drive
B1 fan
Battery
a. Only run the Synthesizer Bandwidth Adjustment, when the EE Default Adjustment is not sufficient.
b. The A26 splitter (5067-4086) and N5245-20013, N5245-20022, N5245-20023, N5245-20101, and
N5245-20150 cables are only used with a legacy HMA26.5 p/n: 5087-7765. If you are unclear which HMA26.5
assembly your PNA has installed, refer to Chapter 7 and
ter and cabling, refer to your option-model in Chapter 6
.
page 8
c. If a backup copy of receiver calibration data from the faulty disk drive is available, it can be copied to the new disk drive. If
not, new data must be generated by performing the

Resetting the Mechanical Counter

This process is to be performed anytime an attenuator or a bypass switch is
replaced in an a PNA. Refer to
Procedure Requirements
— The analyzer must be powered up and operating to perform this procedure.
— The Network Analyzer program must be running.
— A keyboard and mouse must be connected to the network analyzer.
1. Click Utility > System > Service > Diagnostics > Mechanical Counter
2. In the Mechanical Cycle Counter window that opens:
7-68
Adjustments
and Other Procedures
Source Adjustment
IF Gain Adjustment
Receiver Characterization
Receiver Adjustment
IF Response Adjustment (Option
090, 093, or 094 Only)
Receiver Characterization
Receiver Adjustment
IF Response Adjustment (Option
090, 093, or 094 Only)
Restore previously saved receiver
c
calibration data
(or perform Receiver Adjustment)
No adjustment needed
No adjustment needed
Receiver Adjustment
a. Click all of the items that apply.
b. When satisfied, click on Modify.
c. Click Exit.
Verification, Performance,
and Other Tests and Procedures
Source Maximum Power Output
Test
Calibration Coefficients Test
Noise Floor Test
Receiver Compression Test
Dynamic Accuracy Test
Calibration Coefficients Test
Resetting the Mechanical Counter
Read and write to the drive
Check for fan operation
None
and for details on A26 split-
Figure 7-15 on page 7-36
"Bottom Assemblies and Cables by Option Set:" on
Figure 7-28 on page
Keysight N5224A/25A Service Guide
7-69.