Tait TM8100 mobiles - Page 167

TM8100/TM8200 Service Manual Servicing Procedures 167
© Tait Electronics Limited November 2007
Table 6.3 Final tests of receiver functions
Test Limits
Receive sensitivity <
118dBm for 12dB SINAD
Mute opening:
• Country
•City
• Hard
>6dB and <10dB SINAD
>8dB and <14dB SINAD
>18dB and <22dB SINAD
Audio power (maximum volume at –47dBm):
•At “R
X AUDIO/SINAD” connector on test unit
• At pins 3 (SPK–) and 4 (SPK+) of power connector on radio
>500mV
rms
a
>5.00V
rms
Distortion (at –47dBm, 60% rated system deviation at 1 kHz,
with volume set to give 3W into 16Ω load) <3.00%
a. The RX AUDIO/SINAD output on the test unit has 10dB of attenuation switched in when the test unit PORTABLE/MOBILE switch is
set to
MOBILE. Refer to “TOPA-SV-024 Test Unit” on page 613 for details.
Table 6.4 Final tests of general radio functions
Test Description
PTT switch Check that PTT switch functions.
Microphone Check operation of microphone.
Check operation of hookswitch.
Data communications Test 1200 baud data transmission (standard).
Test Tait high-speed data transmission (if feature is enabled).
Direct-connect GPS
(global positioning system)
Check that GPS poll returns correct position (if feature is enabled).
Selcall Check that radio encodes Selcall.
Check that radio decodes Selcall.
Audio tap points and digital I/O Check configuration of programmed options and test operation of
these lines to confirm that Customer requirements are satisfied.