Motorola XTS 2500 Service Manual page 321

VHF Troubleshooting Waveforms: TX Audio 1 kHz Tone
7.1.34TX Audio 1 kHz Tone
Trace 1: TP23 Mod In (640 mVp-p 1 kHz tone 1.5 Vdc)
Trace 2: U201, pin 1 (620 mVp-p 1 kHz tone)
Trace 3: FL200, pin 8 (1.2 MHz square wave 0 to 3 V)
Note: Transmit audio 1 kHz tone, which provides 3 kHz deviation.
6816985H01-F
7.1-35
February 14, 2012