Tektronix SDA601 Cable Box User Manual


 
SDA 601 Serial Digital Analyzer User Manual
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Appendix C: User Service
Battery Hints
For optimal battery life and capacity, use the rechargeable NiCad
battery pack (Tektronix p/n 119-4488-00) in full charge/discharge
cycles. In other words, fully discharge the battery pack before re-
charging, and then charge the battery pack until fully charged,
approximately 16 hours. A new battery pack will take a few charge/
discharge cycles to reach full capacity.
WARNING. Install or replace batteries only with the instrument
switched OFF and the AC adapter disconnected.
Replace the batteries only with standard AA batteries (1.2–1.5 V,
nominal), or with the optional rechargeable battery pack.
Setting the Auto Power Off and Battery Type functions in the Utility/
Diagnostic/Power Manage submenu (see pages 9 and 33) also has
an impact on battery life. The battery types are Alkaline (disposable)
or rechargeable (NiCad). Setting the battery type changes the voltage
thresholds for both the BATTERY LOW display message and low-
battery shut down.
The BATTERY LOW Message
The warning “BATTERY LOW” will appear on the second line of
the SDA 601 display when the battery voltage drops below a prede-
termined level. The level depends on the Battery Type setting. The
SDA will operate for approximately ten minutes after the message
first appears. For best results, replace or recharge the batteries when
you first see this warning.
Low-battery Shut Down
To prevent erratic operation at very low power levels, the SDA 601
will shut itself down if the battery voltage drops below a second,
lower threshold that also depends on the Battery Type setting.