User's Manual

Psion Teklogix 7530 Hand-Held Computer User Manual279
Chapter 8: Specifications
Radio Specifications
8.2 Radio Specifications
- RADIO PERFORMANCE SPECIFICATIONS 
435-470 MHz
Frequency ControlSynthesized
Channel Spacing12.5
Mode of OperationSimplex or Half Duplex
Regulated Supply Voltage+5 VDC +/- 5%
Operating Temperature-30 to +60 Celsius Degree, -22 to +140 Farenheit Degrees
Maximum Dimensions:LxWxT = 7.19cm X 5.56cm X 1.70cm, 2.83” x 2.19” x 0.64”
Weight:2.3 oz. (65 g)
FCC Compliance:Yes
15.2RECEIVER
Bandwidth16 Mhz (20 MHz)
Frequency Stability+/- 1.5 ppm
Sensitivity - 12 dB SINAD0.45 uV
RF Input Impedance50 ohms
Selectivity-70 dB
Spurious and Image Rejection-60 dB (12.5 kHz), -70 dB (20/25 kHz)
Intermodulation-70 dB
FM Hum and Noise-40 dB (12.5 kHz), -45 dB (20/25 kHz)
Conducted Spurious-57 dBm
Receive Current Drain<70 mA nominal
Receive Attack Time< 7 ms (depending on synthesizer loading implementation)
Audio Distortion< 3 %
Output Level DM3474600-1200 mVp-p or 200-400 mV RMS (1 kHz at +/- 3 kHz)
Response DM3474+/- 2 dB from DC to % kHz ( reference to 1 kHz)
Minimum Load Impedance1 Kohm
15.3TRANSMITTER
Bandwidth16 Mhz (20 MHz)
Frequency Stability+/- 1.5 ppm
TCXO CouplingDC
RF Power Output1 W nominal adjustable to 500 mW (1.5 Watt growth objective)
500 mW nominal adjustable to 75 mW (with Low Power Kit)
RF Output Impedance50 ohms
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