Motorola H34QXN7139AN Manuale - Pagina 10

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TORQUE SPECIFICATIONS

APPLICATION
Antenna Bushing Spanner Nut
Back Shield to Frame Screws
Bottom Connector to Frame Screws
Frequency Switch Spanner Nut
All Module Screws
Power Contact Screws
Slotted-Spanner Nut (Baseplate)
Top Panel to Frame Screws
Volume Pot Spanner Nut

SECURENET RADIO FUNCTIONAL TESTS @ 7.5Vdc)

TEST
SERVICE MONITOR
REFERENCE
Set to POWER MONITOR,
FREQUENCY
FREQ. ERROR; frequency
to radio transmit frequency;
input to RF IN/OUT.
RF POWER OUT
Same as above, except set
monitor to measure POWER.
VOICE
Same as above, except set
MODULATION
monitor to measure
DEVIATION.
CODED VOICE
Load monitor with same
MODULATION
key used in radio. Select
proper algorithm and
DEVIATION test with
SECURE COM TEST
MENU on screen.
RATED AUDIO
Set to GENERATOR;
frequency to radio receive
frequency; 1 mV rf output;
1kHz modulation; 3kHz
deviation.
12dB SINAD
Same as above except set
TORQUE
TORQUE
(IN.LBS.)
(N-m)
20
2.27
> 2.8
0.28
> 2.8
0.28
8
0.91
> 2.8
0.28
> 2.8
0.28
- 6
0.45
2
0.23
8
0.91
TRANSMITTER PERFORMAN CE
RADIO
TEST BOX
Set to channel
PTT Continuous (during
corresponding to
performance check).
frequency of test.
Set to channel
PTT Continuous (during
corresponding to
performance check).
frequency and power
level under test.
Set to channel
Input a 1kHz tone @
≈50 mVrms to radio's
corresponding to
frequency and power
microphone (through test
level under test.
box). PTT continuous
Set to channel
Same as above.
corresponding to freq.
and power level under
test. With key loaded,
set radio to coded mode.
RECEIVE PERFORMANCE
Set to open squelch.
Speaker selector on
position "A"; switch to
load.
Set to open squelch
Set to speaker load
TORQUE
BIT NO.
6680370B90
6680321B79
6680321B79
6680370B88
6680321B79
6680321B79
6680370B89
6680321B79
6680370B88
COMMENTS
Frequency error =
≤450 Hz (vhf)
≤750 Hz (uhf)
≤150 Hz Mid-Band)
RF power output ≥ published
specs for channel under test.*
Listen for 1kHz tone from
monitor. Deviation should be
≥4.0kHz and ≤5.0kHz -
(for 25kHz)
≥3.0kHz and ≤4.0kHz -
(for 20kHz)
Listen for decoded 1kHz
tone from monitor. Deviation
should be ≥3.5kHz and
≤4.5kHz. (for 25kHz)
≥2.5kHz and ≤3.5kHz -
(for 20kHz)
Verify that audio is present;
adjust radio volume control
to read 3.7 to 3.9 Vac on
DVM.
Reduce rf level to achieve