160 Servicing Procedures TM8100/TM8200 Service Manual
© Tait Electronics Limited June 2006
Table 6.2 Final tests of transmitter function
Test Limits
Error in transmit frequency +100 Hz to –100 Hz
Transmit power:
•High
• Medium
•Low
• Very low
23.2 W to 29.2 W
11.1 W to 14.0 W
4.6 W to 5.8 W
0.9 W to 1.2 W
Current at high power:
• A4-band radios
• B1-band radios
• C0-band radios
• D1-band radios
• H5-band radios
• H6-band radios
< 5.5 A
< 5.5 A
< 5.5 A
< 5.5 A
< 6.5 A
< 6.5 A
Peak deviation (sweep tone of 300 Hz to 3 kHz):
• Narrow-band
• Medium-band
• Wide-band
<
2.5 kHz
<
4.0 kHz
< 5.0 kHz
Distortion:
• 1 kHz at 1.5 kHz deviation (narrow-band)
• 1 kHz at 3.0 kHz deviation (wide-band)
< 3%
< 3%
CTCSS (continuous-tone-controlled subaudible signaling) deviation:
• Narrow-band
• Medium-band
• Wide-band
250 to 350 Hz
500 to 560 Hz
580 to 680 Hz
Table 6.3 Final tests of receiver functions
Test Limits
Receive sensitivity <
118 dBm for 12 dB SINAD
Mute opening:
• Country
•City
• Hard
>6 dB and <10 dB SINAD
>8 dB and <14 dB SINAD
>18 dB and <22 dB SINAD
Audio power (maximum volume at –47 dBm):
•At “R
X AUDIO/SINAD” connector on test unit
• At pins 3 (
SPK–) and 4 (SPK+) of power connector on radio
>500 mV
rms
a
>5.00 V
rms
Distortion (at –47 dBm, 60% rated system deviation at 1kHz,
with volume set to give 3 W into 16 Ω 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 571 for details.
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