SR600 RECEIVER OPERATING INSTRUCTIONS These operating instructions are intended to provide the user with sufficient information to install and operate the unit correctly. The Wood and Douglas SR600 UHF synthesized receiver is intended to fulfil the numerous OEM applications by virtue of its highly flexible synthesized design approach, miniature size and cost-effective performance. INSTALLATION NOTES: Pin spacing on all connectors is 2.54mm (0.
CONNECTION Connection to the SR600 receiver is via PL1, PL2 and PL3 which plug directly into the user's own equipment. The location of these connectors is shown in Figure 1 and detailed in the following tables. PIN NAME 1 0V 2 RF I/P 3 0V FUNCTION REMARKS 0 volts common ground RF input 50 ohms input 0 volts common ground Connector PL1 pin detail PIN NAME 1 +VIN 2 0V FUNCTION REMARKS positive supply +6.0V to +15.
PIN 1 2 NAME FUNCTION RSSI S meter output SQF Squelch flag 3 AUDIO AF output 4 DATA 5 6 7 REMARKS 0.5 - 2V signal strength indicator, 60dB range open collector output, ON (low) = no signal 250mV p-p ±20% into 10kS Note: The output audio is inverted with respect to the ST600 (or similar Wood & Douglas product) audio input. Data output open collector, no pull-up Note: The data output is inverted with respect to the ST600 (or similar Wood & Douglas product) data input.
FREQUENCY PROGRAMMING The SR600 has an internal memory which can store up to 128 RF channels (16 randomly programmed and 112 sequentially programmed). The frequency and set-up information is programmed into the unit by a synchronous PCM interface protocol. The software supplied with the SR600 receiver is the STSRn00.exe program. The software can be run on a PC with the serial port connected to PL3 of the SR600 receiver via a suitable adaptor as shown in Figure 2.
RUNNING THE SOFTWARE 1. Connect SR600 to a suitable supply and to the PC using the programming adaptor. 2. Insert the STSRn00PRG disk into drive A and type: A:STSRn00 3. The user is then prompted to enter the serial port number of his PC which is used to communicate with the SR600 receiver. Enter 1 or 2. 4. Next there is a prompt to select STn00 or SRn00. Enter 2 for the SR600 5. Next is the prompt to select freq.
STSRn00 Programmer v.1.0.02 Chan Chan Chan Chan Chan Chan Chan Chan Chan Chan Chan Chan Chan Chan Chan Chan 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 MHz << 458.5 458.5125 MHz 458.525 MHz 458.5375 MHz MHz 458.55 458.5625 MHz 458.575 MHz 458.5875 MHz MHz 458.6 458.6125 MHz 458.625 MHz 458.6375MHz 458.65 MHZ 458.6625MHz 458.675 MHz 458.6875MHz Start table 458.7 MHz Max. Freq. 458.95 MHz Table step 1 x 12.5 kHz Comparison freq. 12.5 KHz Ref. (TCXO) freq. 12.
Parallel channel selection To enable parallel channel selection mode press the F4 (Parallel channel mode) function key, The screen then displays ‘parallel channel selected’. Three inputs RB1, RB3 and RB3 applied via PL3 to pin 8, pin 9 and pin 10 respectively, select the operating channel as shown in the following table.
Programming from customer equipment In the event of a customer wishing to program the SR600 receiver from his own equipment then the following data sequence must be used allowing 5ms between the characters in the data stream: 1200 baud, RS232 levels, 1 start bit - 8 bit data - no parity - 1 stop bit 40 (decimal 64) synchronising code 7 bit channel 0 - 127 (bit 7 = 0) 95 (decimal 149) confirmation byte RANGE INFORMATION The following table gives an indication of the typical ranges to be expected between a t
TECHNICAL SPECIFICATION Frequency range Switching bandwidth Frequency stability Number of RF channels : : : : Channel switching delay Channel spacing Modulation type Spurious emissions (conducted & radiated) Supply voltage Supply current at 7.2V Interface connections RF connection Operating temperature Storage temperature Weight Size Type approval Sensitivity : : : Image/spurii Intermodulation response rejection Blocking Intermediate frequencies Adjacent chan.
