User's Manual

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RF Technology T800 Page 24
7.4.12 Distortion 7 SPECIFICATIONS
Maximum Deviation - Maximum deviation preset to 2.5 or 5 kHz
7.4.12 Distortion
Modulation distortion is less than 3% at 1 kHz and 60% of rated system deviation.
7.4.13 Residual Modulation and Noise
The residual modulation and noise in the range 300 - 3000 Hz is typically less than -50dB
referenced to rated system deviation.
7.4.14 600Ω Line Input Sensitivity
Adjustable from -30 to +10 dBm for rated deviation
7.4.15 HI-Z Input
Impedance - 10KΩ Nominal, balanced input
Input Level - 25mV to 1V RMS
7.4.16 Test Microphone Input
200Ω
dynamic, with PTT
7.4.17 External Tone Input
Compatible with R500 tone output
7.4.18 External ALC Input
Output will be reduced 20dB by pulling the input down to below 1V. (Typically more than
40dB attenuation is available.) The input impedance is
≅10kΩ
, internally pulled up to rail.
The external ALC input can be connected to the power control circuit in Eclipse external
power amplifiers.
7.4.19 T/R Relay Driver
An open collector transistor output is provided to operate an antenna change over relay or
solid state switch. The transistor can sink up to 250mA.
7.4.20 Channel Select Input / Output
Coding - 8 lines, BCD coded 00 - 99
Logic Input Levels - Low for <1.5V, High for >3.5V
Internal 10K pull down resistors select channel 00 when all inputs are O/C.