4-18 Keysight N5221A/22A Service Guide
Troubleshooting
Front Panel Troubleshooting
4-
Checking the RPG (Front Panel Knob)
To check the RPG knob:
1. Press the UTILITY key.
2. Rotate the knob and check for a fluid movement of numbers on the
analyzer display.
3. If the movement of numbers is not smooth or no numbers appear at all,
suspect a faulty A1 front panel interface board. To replace the A1 front
panel interface board, refer to “Removing the A1 Front Panel Interface
Board and Keypad Assembly” on page 7-10.
Trace 4 Display Bk Sp +/-
Traces Avg 0
STIMULUS
Keys
Channel Cal 1 Freq
Navigation
Keys
MARKER/
ANALYSIS Keys
2Power
← Marker 3 Sweep
→ Search 4 Trigger
↑ Memory 5
UTILITY
Keys
↓ Analysis 6 Save
Click 7Print
8Macro
9Recall
G/n System
M/u Preset
Table 4-2 Front Panel Keyboard Key Names
TRACE/CHAN
Keys
RESPONSE
Keys
ENTRY
Keys
ENTRY
Keys (Cont’d)
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