MDS 05-3447A01, Rev. F
MDS 1710A/C and MDS 2710A/C/D
33
7.0
TECHNICAL REFERENCE
7.1 Transceiver Specifications
TRANSMITTER SYSTEM SPECIFICATION
Operating Frequency:
See Transmitter Specifications
Frequency Stability:
±1.5 ppm
Adjacent Channel Power:
–65 dBc (MDS 1710A/2710A)
–60 dBc (MDS 1710C/2710C)
–55 dBc (MDS 2710D)
Carrier Power Accuracy:
±2 dB
RECEIVER SYSTEM SPECIFICATION
Operating Frequency:
See Receiver Specifications
Maximum Usable Sensitivity:
–111 dBm for 1 x 10
-6
BER
Co-Channel Rejection:
–12 dB
DATA CHARACTERISTICS
Signaling Standard:
EIA-232
Connector:
DB-25 Female
Data Interface Rates:
110 bps to 38.4 kbps1200, 2400, 4800, 9600,
19200, 38400 bps—asynchronous
Data Latency:
10 ms maximum, including RTS/CTS delay
Byte Length:
10 or 11 bits
TRANSMITTER
Frequency Range:
130-174 MHz (MDS 1710A/C)
216-220 MHz (MDS 2710 A/C) FCC
220-240 MHz (MDS 2710A/C)
220-222 MHz (MDS 2710D) FCC
See
Figure 4 on Page 4
for detailed listing
Modulation Type:
Binary CPFSK
Carrier Power:
0.1 Watts to 5 Watts @13.8 Vdc
Duty Cycle:
Continuous
Output Impedance:
50 ohms
Frequency Stability:
MDS 1710 ±1.0 ppm
MDS 2710 ±1.5 ppm
Channel Spacing:
6.25 kHz steps (MDS 1710A/C and 2710A/C)
5.0 kHz steps (MDS 2710D)
6.25 kHz (MDS 1710A/C @ 130-174 MHz)
Transmitter Spurious
Radiated Emissions:
–57 dBm, 30 MHz to 1 GHz
–47 dBm, 1 GHz to 12.5 GHz
Harmonics:
2nd harmonic:
57 dBc
3rd harmonic & higher:
57 dBc
Time-out Timer:
30 seconds (default). Selectable with TOT
command
Transmitter Keying:
Data activated or RTS
