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Procedure 12.
ET1
Battery
Procedure 12. BTI Battery
Warning
Battery
BTl
contains lithium polycarbon monofluoride. Do not incinerate or
puncture this battery. Dispose of discharged battery in a safe manner.
Caution
To avoid loss of the calibration constants stored on the A2 controller assembly,
connect the spectrum analyzer to the main power source and turn on before
removing the battery.
The battery used in this instrument is designed to last several years. An output voltage of
t3.0
V is maintained for most of its useful life. Once this voltage drops to
t2.6
V, its life and
use are limited and the output voltage will deteriorate quickly. When the instrument is turned
off, stored states and traces will only be retained for a short time and may be lost. Refer to
“State- and Trace-Storage Problems” in chapter 10, “Controller Section,” in this manual. The
battery should be replaced if its voltage is
t2.6
V or less.
Removal/Replacement
1. Remove any option module attached to the rear panel.
2. Locate the battery assembly cover on the spectrum analyzer rear panel. Use a screwdriver
to remove the two
flathead
screws securing the cover to the spectrum analyzer.
3. Remove the old battery and replace it with the new one, ensuring proper polarity.
4. Measure the voltage across the new battery. Nominal new battery voltage is approximately
t3.0
V. If this is not the case, check the battery cable and A2 controller assembly.
5. Secure the battery assembly into the spectrum analyzer.
Assembly Replacement 4-43