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XTS Premature Low Battery Alert
Posted: Thu Oct 07, 2004 7:59 pm
by mtr12222
My XTS has started to come up with the low battery alert even though the batteries come off the Impress charger fully charged.
The Firmware is R 7.11.0 DSPN 8.02.06.
Battery date codes are 209 for a NiMH and 229 AUC for a NiCd impress batt. I've played with the CPS settings to no avail. this just started happening. As soon as I take the batteries out of the charger the low batt. indicator shows up. Any help would be appreciated.
Posted: Thu Oct 07, 2004 8:46 pm
by xmo
I have the same problem. This issue is addressed in SRN-1463.
Subject: XTS3000 PREMATURE LOW BATTERY ALERT
Symptoms:
The XTS3000 units may experience premature low battery alerts and/or distorted or no TX audio when used with IMPRES
“smart” battery packs NNTN4435, NNTN4436, NNTN4437, HNN9031, HNN9032, and NTN9862.
Potential Problem Chargers:
All XTS3000 with firmware prior to R07.20.00 that uses the IMPRES “smart” batteries NNTN4435, NNTN4436, NNTN4437,
HNN9031, HNN9032, and NTN9862.
Cause:
This is due to stray or parasitic capacitance on the center data pin of the IMPRES battery packs. This capacitance can cause an
oscillating condition on the data pin, which can make the radio misinterpret and indecisive about what battery pack type is
connected to the radio. The radio software may revert to clamshell battery defaults, which is a higher low-battery alert
indication threshold and low-power output. Premature low-battery alert indication will be the result, even though full capacity
of the battery is available.
Also, if the parasitic oscillation frequency falls within the audio bandwidth, this may modulate the transmitted signal and will
be demodulated by the receiving unit as undesired audio noise.
Corrective Action:
Option 1 - Use of Battery Insulator kit RLN5649A. The kit includes battery contact insulators and instructions on how to
apply them to the battery center contact. Kits are available at no charge. Contact AAD @ (800)422-4210 for availability.
Option 2 - Upgrade software with enhanced Clamshell detection software (version R07.20.00 or greater). Please contact
Subscriber Support Team @ 800-927-2744 to obtain information to obtain the upgrade kit.
Informational Only. No Labor or Warranty Implied or Intended.