Tait TM8000 Series Service Manual page 123

Table 5.2 Final tests of receiver functions
Test
Receive sensitivity
Mute opening:
• Country
• City
• Hard
Audio power (maximum volume at –47 dBm):
• At "R /SINAD" connector on test unit
A
X UDIO
• At pins 3 ( –) and 4 (
SPK
Distortion (at –47 dBm, 60% rated system deviation at 1 kHz,
with volume set to give 3 W into 16 Ω load)
Table 5.3 Final tests of general radio functions
Test
PTT switch
Microphone
Data communications
Direct-connect GPS
(global positioning system)
Selcall
Audio tap points and digital I/O
TM8100 Mobile Radio Service Manual
May 2004 © Tait Electronics Limited
+) of power connector on radio
SPK
Description
Check that PTT switch functions
Check operation of microphone
Check operation of hook-switch
Test 1200 baud data transmission (standard)
Test Tait high-speed data transmission (if feature is enabled)
Check that GPS poll returns correct position (if feature is enabled)
Check that radio encodes selcall
Check that radio decodes selcall
Check configuration of programmed options and test operation of
these lines to confirm that Customer requirements are satisfied
Limits
<118 dBm for 12 dB SINAD
>6 dB and <10 dB SINAD
>8 dB and <14 dB SINAD
>18 dB and <22 dB SINAD
>500 mV
rms
>5.00 V
rms
<3.00%
Servicing Procedure 123