GE ApexPro TT Technical Manual page 106

Troubleshooting
Short battery life
Waveform dropout
5-22
If, after powering up the transmitter, only the LA LED flashes rapidly:
The transmitter has lost its memory.
The manufacturing/service code contained in the EEPROM has been erased
or corrupted.
The transmitter needs to be reprogrammed.
Return the transmitter to the factory for service or contact Technical Support.
Install a new set of alkaline AA batteries into the transmitter and then verify
battery life.
Once used in a transmitter for any length of time, dispose of (recycle) used
batteries immediately.
Batteries must NOT be re-used for telemetry. Use batteries for only one patient.
DO NOT store used batteries for use with the next patient. A battery contains a
finite amount of stored energy. Each unit of time a battery is used diminishes the
amount of stored energy. Installing a used battery in a transmitter results in a
greatly reduced, and unpredictable, monitoring period.
NEVER use a battery beyond the recommended expiration date for the battery.
The amount of stored energy in the battery may not be sufficient for proper
monitoring.
DO NOT use rechargeable batteries. The transmitter circuitry, Apex Oximeter,
and the Accutracker were designed for the power output characteristics of
alkaline batteries.
NOTE
Rechargeable batteries DO NOT store as much energy as alkaline batteries
and have very different output characteristics. The monitoring period may be
greatly shortened and the specified low-battery warnings may be adversely
affected or possibly not even displayed.
If, after working through the above steps, your transmitter still has a short battery
life, a call for service may be necessary.
To determine the type of dropout, enable flags as described in
on page 7-16.
If out of antenna range, position the transmitter within range of the antenna.
Check the voltage levels of the batteries. If the voltage level is below the
acceptable value as listed in
Alternatively, you can replace the batteries and see if the waveform is displayed
properly.
For external RF interference, use the spectrum analyzer to verify the external
noise and reprogram the transmitter if necessary.
If you suspect a bad transmitter, perform checkout procedure.
page 7-1.) Return to service if defective.
ApexPro™
Switches/LEDs on page 2-13, replace the batteries.
RF signal integrity
(See Checkout on
2001989-351A