Final Tests Of Transmitter Function - Tait TM9100 Service Manual

Table 6.2

Final tests of transmitter function

Test
Error in transmit frequency
Transmit power:
• High
• Medium
• Low
• Very low
Current at high power:
• B1-band radios
• H5-band radios
• H6-band radios
Peak deviation (sweep tone of 300 Hz to 3 kHz):
• Narrow-band
• Medium-band
• Wide-band
Distortion:
• 1 kHz at 1.5 kHz deviation (narrow-band)
• 1 kHz at 3.0 kHz deviation (wide-band)
CTCSS (continuous-tone-controlled subaudible signaling) deviation:
• Narrow-band
• Medium-band
• Wide-band
Table 6.3 Final tests of receiver functions
Test
Receive sensitivity
Mute opening:
• Country
• City
• Hard
Audio power (maximum volume at –47 dBm):
• At "R A /SINAD" connector on test unit
X UDIO
• At pins 3 ( –) and 4 (
SPK SPK
Distortion (at –47 dBm, 60% rated system deviation at 1kHz,
with volume set to give 3 W into 16 Ω load)
150 Servicing Procedures
+) of power connector on radio
Limits
+100 Hz to –100 Hz
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
< 5.5 A
< 6.5 A
< 6.5 A
< 2.5 kHz
< 4.0 kHz
< 5.0 kHz
< 3%
< 3%
250 to 350 Hz
500 to 560 Hz
580 to 680 Hz
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%
TM9100 Service Manual
© Tait Electronics Limited August 2005