TM8100/TM8200 Accessories Manual TMAA01-01 Line-Interface Board 25© Tait Electronics Limited August 20052.7 Line-Interface Board SpecificationsInput Voltage 10.8V to 16VDCOperating Temperature Range -10°C to +60°C ambientDC Input Current <40mA total (+13.8V supply)Line Input Sensitivity (60% deviation) -20dBm to +6dBm (600Ω)Line Output Level (60% deviation) -20dBm to +6dBm (600Ω)Line Impedance 600ΩReturn Loss (300Hz to 3kHz) >20dB relative to 600ΩLine Output Filter Response (stopband)2 pole6 pole-12dB/octave, f >4kHz-36dB/octave, f >4kHz2.7.1 Radio With Line-Interface Board: Receiver + Line OutputReceiver Frequency Response*Receiver ProcessedBandwidthResponseReceiver Unprocessed*relative to 1kHz, 60% deviation300Hz to 3kHz (standard400Hz to 3kHz (CTCSS)+1, -3dB relative to -6dB/octave+1, -3dB (300Hz to 3kHz)Test Signal -46dBm RF*, 0dBm line output,audio tap T4*60% deviation at 1kHzSignal-to-Noise RatioNarrow BandwidthWide Bandwidth>40dB>43dBMute Ratio >60dBDistortion*Narrow BandwidthWide Bandwidth*30kHz bandwidth distortion meter<4%<4%