Users Manual

MDS 05-6399A01, Rev. G MDS™ Master Station 75
The specifications for the LN700 NIC module:
x Frequency Range(s): 757-788 MHz
x FCC Part 90 (private land mobile radio services)
x FCC ID: E5MDS-LN700
x ICID: n/a
The specifications for the LN900 NIC module:
x Frequency Range: 896-960 MHz
x FCC Part 90 (private land mobile radio services) & Part 101
x FCC ID: E5MDS-LN900
x ICID: 101D-LN900
The general specifications for all LN NIC modules are:
x Peak Power Output: 20 dBm to 40 dBm peak power in 1.0 dBm steps (DEFAULT = 40 dBm)
x Output Impedance: 50 Ohms
x Antenna Connector: TNC female
x Modulation Type: QPSK, 16QAM, 64QAM
x FEC: Convolutional and Reed Solomon
x Data Rates: 20kbps - 120kbps
Multiple modulation rate / bandwidth combinations are provided; as seen in Table 5-5.
Table 5-5. Modulation and Bandwidth for LN radios
RF
Channel
Bandwidth
Modem
Symbol
rate
QPSK
(x2)
OTA rate
16QAM
(x4)
OTA rate
64QAM
(x6)
OTA rate
6.25 KHz 4800 sps 9600 bps 19200 bps 28800 bps
12.5 KHz 9600 sps 19200 bps 38400 bps 57600 bps
12.5 KHz 10000 sps 20000 bps 40000 bps 60000 bps
25.0KHz 16000 sps 32000 bps 64000 bps 96000 bps
25.0KHz 20000 sps 40000 bps 80000 bps 120000 bps
NOTE The only required steps for basic configuration are: Program transmit and receive frequencies
per user licensing; program a network name in all units; establish one unit as the AP
Minimal configuration is necessary but several advanced tuning facilities are provided.
By default the radio ships from the factory with a 12.5KHz bandwidth and 10k-symbol/sec data
rate. Modem operation is configured for Adaptive Modulation with FEC disabled. Transmit
and Receive frequencies are unprogrammed and left to field installation personnel to prevent in-
advertent operation on the wrong channel.
For the advanced user, the module supports configuring more items including:
x Data Retries - Number of times to retry unicast data before declaring NACK.
x Power – RF output power control.