Operating instructions

12 1892 1211 - SR500 Receiver Operating Instructions - 2.10 / May 2006
TECHNICAL SPECIFICATION
Frequency range : 400 - 430 MHz, 430 - 470 MHz
Switching bandwidth : 5MHz
Frequency stability : +2ppm
Number of RF channels : up to 128, frequencies programmable within switching
bandwidth (16 individually, 112 sequential table) using
supplied software
RF channel selection : 1 of 128 serial select (1200 baud RS232)
1 of 8 3-wire parallel select
Channel switching delay : <50ms across switching bandwidth
Channel spacing : 12.5kHz/20kHz/25kHz available
Modulation type : F1D/F2D/F3D
Spurious emissions
(conducted & radiated) : in accordance with R&TTE directive
Supply voltage : 6-14V DC, negative earth
Supply current at 7.2V : <40mA
Interface connections : 2 + 10 pin 0.1" header
RF connection : 3 pin 0.1" header
Operating temperature : -20
o
C to +55
o
C
Storage temperature : -30
o
C to +70
o
C
Weight : 35g
Size : 60 x 39 x 15mm (2.36 x 1.53 x 0.59 inches)
Type approval : MPT1329
Sensitivity : <-115 dBm for 12dB SINAD (12.5 kHz)
<-117 dBm for 12dB SINAD (25 kHz)
(Measured with a flat audio response)
Image/spurii : >60dB
Intermodulation response
rejection : >60dB
Blocking : >75dB
Intermediate frequencies : 45 MHz and 455kHz
Adjacent chan. selectivity : >60dB for 12.5kHz channel spacing
>70dB for 25kHz channel spacing
Audio response : 9Hz to 6kHz at -3dB (25kHz channels)
Recovered audio level : >250mV p-p (+20%) into 10kO
Squelch type : Noise-operated open collector output
General facilities : RSSI output (0.5 to +2V nominal)
+5V output
Independent data output