Filter
Top Products
Maintenance
2715 Spectrum Analyzer Service Manual
6-33
Use the following procedure to replace the battery on the Display Storage and
GPIB or RS-232 boards.
The Spectrum Analyzer uses two lithium batteries for nonvolatile memory. One
battery is located on the Display Storage board, and the other on the GPIB or
RS-232 board.
NOTE. Replacement of this assembly requires completion of the. Amplitude
Flatness Adjustment Procedure on Page 5--52.
Large quantities of spent batteries may need to be sent by surface carrier to a
hazardous waste disposal facility. Check with your local, state and Federal
regulations.
WARNING. To avoid personal injury, observe proper procedures for handling of
lithium batteries. Improper handling can cause fire, explosion, or sever e burns.
Do not recharge, crush, disassemble, heat the battery above 100
°C, incinerate,
or expose the contents to water.
Maintenance Adjustments
Maintenance procedures are those required when an assembly is replaced.
Normal adjustment does not require completion of this procedure.
After replacing the Phase Lock CFC Board, use this procedure to select R602 on
the Phase Lock CFC board.
1. Remove the small shield over part of the Phase Lock CFC board.
2. Disable frequency corrections by pressing UTIL 4 3 5. Press any menu
button to exit the menu, then enable continuous strobes by pressing
UTIL5166.
3. Monitor J240 on the LFVCO assembly (Phase Lock module) with the test
oscilloscope. Set the test oscilloscope deflection factor to 1 V/div and sweep
rate to 20 s/div.
4. Set the F REQ SPAN/DIV to 200 kHz. There should be a square wave
present. Tune the FREQ/MARKERS control to get the lowest frequency
possible. Reset the test oscilloscope time/div as needed.
5. Measure the beat note amplitude at the bottom of R602 (Figure 6--13) on the
Phase Lock CFC board.
Replacing the Batteries
Beat Note Level
Adjustment