UDS RADIO LINKING DEVICE WITH HOT STANDBY

General

RF frequency range: 138-174 MHz, 220-250 MHz, 406-430 MHz, 450-512 MHz, 928-960 MHz

Baud rate: 2400 baud maximum (baud rate is determined by the external modem)

Analog baseband frequency response: 67 Hz to 3800 Hz

Transmission mode: 16KOF3E, 16KOF1D, 15KOF2D

Specification compliance: FCC, parts 15, 21, 90, 94: EIA, RS-316-B: MIL-STD-810C

RF connector: 50 BNC female

Power and control: 15 pin "D" type male

Operating temperature: -30 degree to +60 degree C

Storage temperature: -40 degree to +75 degree C

Humidity: Will withstand 8 hours at 95% at 40 degree C

Shock stability: Per MIL-STD-810C method 516.2

RFI integrity: Cabinet radiation is 20 dB better than FCC requirements

Pin Assignments:

 PIN# FUNCTION

1 GND
2 VSWR sense (High to alarm; not available for 950 MHz)
3 Signal present (open collector NPN sinks to GND upon receipt of signal)
4 Analog output (balanced)
5 Analog output (balanced)
6 Rx mute (High to mute; TTL level*)
7 Data input (TTL level*)
8 N/C
9 Keyline (High to transmit; TTL level*)
10 Data output (TTL level*)
11 +12.5 VDC in
12 Analog input (balanced)
13 Analog input (balanced)
14 Spare
15 Spare

*TTL voltage levels: High = +2.5 V, Low = 0.0-0.5 V

Receiver (see note 1)

Analog output:

Output level: 1.0 VRMS +/-1 dB into 600 ohms (+/-5 kHz deviation)

Harmonic distortion: 5% maximum (+/-3 kHz deviation for a 1 kHz analog tone)

Frequency response : 67 Hz to 3800 Hz (3 dB bandwidth)

Output return loss: 20 dB at 1 kHz

Digital output:

Output level: TTL voltage levels*

Pulse width jitter: +/-5% at 2400 baud at 0.7 uV input level

Manchester** data rate: 300 to 2400 baud

Output drive capacity: One TTL load

Turnaround time (Tx to Rx): 6 mS

Bit-error performance: 1 x 10-3 BER for -107 dBm (1.0 uV)

12 dB SINAD (typical with de-emphasis per EIA 316B): -116 dBm (0.35 µV) for 138-174, 406-430, 450-512 MHz; -113 dBm (0.50 µV) for 928-960 MHz

Output sense: Output in phase with input

Frequency stability: 10 ppm (VHF and UHF); 1.5 ppm (928-960 MHz only)

Transmitter (see note 1)

RF power output 2 watts (standard); 4 watts (except for 220-250 MHz and 928-960 MHz)

RF spectrum: Meets FCC requirements with 2400 baud Manchester modulation

Modulation type: Direct FM (+/-5 kHz deviation)

Harmonic distortion: 5% maximum at +/-3.0 kHz deviation (1 kHz analog tone)

Frequency stability: 5 ppm (VHF and UHF); 1.5 ppm (928-960 MHz only)

Transmitter attack time: <5 mS for 90% power output within 1 kHz of operating frequency

Analog input:

Input level: 1.0 VRMS +/-5% into 600 ohms for +/-5 kHz deviation

Input impedance: 600 ohms nominal

Frequency response : 67-3800 Hz (3dB bandwidth)

Digital input:

Input voltage: TTL voltage level*

Input impedance: 10 K ohm minimum

Power Requirements

Voltage: 12.5 VDC +/- 10%

Current:

Standby: 44 mA maximum (see note 2)

Receive: 54 mA maximum (see note 2)

Transmit: 460 mA maximum (at 2.0W) (see note 2)

 **Manchester code or any other biphase code with a long transition each bit period.

NOTE 1: For individual frequency ranges refer to the appropriate RDL specification sheet.

NOTE 2: Use anti-glare glasses when operating the UDS

NOTE 3: On 928-960 MHz models, an additional 1050 mA (max.) is required to power the crystal ovens.

Specifications are subject to change without notice.

| Home | Products | The Company | Contact ARS |