Codan Radio MT-4E Analog and P25 Digital - Maintenance Guide - Manual (Page 73)

MT-4E ANALOG & P25 DIGITAL RADIO SYSTEMS | MAINTENANCE GUIDE
Chapter 7: Blank Worksheets Page 65
MT-4E Radio System Test Sheet
Date (D/M/Y)
Firmware Versions
Serial Numbers
Rx:_____________
Receiver:____________________
Tx:_____________
Transmitter:__________________
Measurement
System Regulator Testing
Vdc Vdc Vdc
Receiver Testing
%
dBm
Squelch
dBm
Unsquelch
dBm dBm
Reference Sensitivity (5% BER)
dBm
Hz
Transmitter Testing
% W W
KHz
Maximum Deviation (1.3 KHz tone @ +10 dBm)
KHz
Hz
%
Hz
System Testing
mA
A
dBm KHz KHz
%
* The Parameters as shown are for room temperature (25 °C) testing. Results over the entire temperature range (-30
ÛC to +60
ÛC) may vary.
No parameter (system dependent) 0.5 to 6.0 or 8.0 W (VHF & UHF) / 0.5 to 3.0 W (700/800/900 MHz)
Audio Distortion (1 KHz Tone @ 60% max dev)
0 dBm (775 mVrms @ 600 ohms) ± 0.5 dBm
Amplifier RF Power Output
No parameter (system dependent)
Carrier Reference Oscillator Offset
± 1.0 ppm (VHF) / ± 0.5 ppm (UHF) / ± 0.1 ppm (700/800/900 MHz) No parameter (system dependent)
Standby Current Draw Transmit Current Draw
No parameter (typically squelch / unsquelch points are centered
around 12 dB SINAD point with 6 dB of hysteresis)
”
3.0%
CTCSS Encode Tone Deviation
± 350 Hz (12.5 KHz) or ± 500 Hz (25 KHz) ± 50 Hz
C4FM Modulation Fidelity
”
5.0%
Deviation Level (-8.0 dBm audio input)
± 1.5 KHz (12.5 KHz) or ± 3.0 KHz (25 KHz) ± 0.1 KHz
Transmitter RF Power Output Description Supply Voltage +9.5 Volts Regulated Receiver RSSI @ -100 dBm
Parameters +10 Vdc to +17 Vdc (+13.8 Vdc nominal) +9.5 Vdc (± 0.1 Vdc) 0 Vdc to +5 Vdc
Balanced Audio Output Level L.O. Reference Oscillator Offset
-8.0 dBm (308 mVrms @ 600 ohms) ± 0.5 dBm ”
-118 dBm (VHF & 420/460) /
”
-116 dBm (all other)
± 1.0 ppm (VHF) / ± 0.5 ppm (UHF) / ± 0.1 ppm (700/800/900 MHz)
Audio Distortion (1 KHz Tone @ 60% max dev) Reference Sensitivity (12 dB SINAD) Squelch Thresholds
”
2.0% (VHF & UHF) /
”
3.0% (700/800/900 MHz)
”
-118 dBm (VHF & 420/460) /
”
-116 dBm (all other)
Auxiliary Deviation Level (0 dBm auxiliary input)
± 1.5 KHz (12.5 KHz) or ± 3.0 KHz (25 KHz) ± 0.1 KHz ”
2.5 KHz (12.5 KHz) or
”
5.0 KHz (25 KHz)
P25 Digital Repeat Capability Checked
Check mark
Repeat Deviation Level
± 1.5 KHz (12.5 KHz) or ± 3.0 KHz (25 KHz) ± 0.1 KHz
System Distortion
No parameter (typically
”
4.0%)
Auxiliary Audio Output Level