Microwave Data Systems MDS 4310, Installation, Operation & Field Maintenance, Page: 20 / 129

MDS 05-2415A01, Rev. A GENERAL 1-7
Power Output: 5 Watts/+37 dBm (standard)
at the
ANTENNA
Connector
Adjustable down to 0.5 watt/+27 dBm
Duty Cycle: 100%/Continuous
Output Impedance: 50 Ohms
Forward & Reflected Power Detector: Built-in
Frequency Stability:
±
0.00015% (1.5 PPM), –30
°
C to +60
°
C,
For All Models
RF Channel Bandwidth: 12.5 kHz (25 kHz Compatible)
Spurious & Harmonic Emissions: –65 dBc
TX Response Time:
≤
4 ms
Modulation Type: FSK—With 4800 and 9600 bps modems
FM—With 1200 bps AFSK modem
Deviation:
±
2.5 kHz Maximum
Time-Out Timer: Internal; Programmable from 1–255 Seconds,
or Off
Analog Model Audio Input
Characteristics—
Level: Adjustable, –20 to +10 dBm
for 2.5 kHz Deviation
Model 4310: 600 Ohms, Unbalanced
Model 4350: 600 Ohms, Balanced,
4-Wire Audio
Frequency Response: Model 4310: +1 dB, –3 dB, 50–3000 Hz
Model 4350: +1 dB, –3 dB, 300–3000 Hz
Soft Carrier Dekey: Programmable from 0 to 255 ms in 1 ms steps
Soft Carrier Dekey factory set to…
0 ms with no internal modem
0 ms with MDS 1200 baud modem
2 ms with 4800 FSK internal modem
4 ms with 9600 FSK internal modem
Transmitter Keying: Positive-going and negative-going,
TTL-compatible keying inputs are provided.
Inputs will operate with signal voltages
between 5 and 40 volts. Dry contact closures
are also suitable. Keyline input pins have an
input impedance of 10 kilohms and have built-
in over-voltage protection up to
±
40 volts.
PTT Delay: Programmable from 0-31 ms in 1 ms steps