BlueCom PLTS, Manual

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System Description Party Line Telephone System PLTS
BCPT1010.SD.E2.doc, Version 1.0 BlueCom AG, 1.3.1999
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5 J3KA Technical data
5.1 Supply
Input voltage range
"-48V" -40..-60 V
"-24V" -20..-30 V
Maximum input voltage ripple 2 V
pp
Supply current  80 mA
5.2 Inputs
Impedance 600

, balanced
Return loss, 300...3400 Hz  14 dB
Maximum input level +16 dBm
5.3 Outputs
Impedance 600

, balanced
Return loss, 300...3400 Hz  14 dB
Maximum output level
48 V supply  +16 dBm
24 V supply

+10 dBm
5.4 Amplifier
Gain Continuously adjustable by means
of multiturn potentiometers
Ranges
low

6 dB
medium

18 dB
high

30 dB
Frequency response, 300...3400 Hz,
reference 800 Hz, 0 dB gain, +16 dBm out ± 1 dB
Harmonic distortion
400 Hz, 0 dB gain +16 dBm out

0.5 %
Output noise
300...3400 Hz, 0 dB gain  -70 dBm
Crosstalk, 300...3400 Hz, 0 dB gain, 0 dBm output
Input 1 to Output 1 -65 dB
Input 2 to Output 2 -65 dB
Input 3 to Output 3 -65 dB
Input 4 to Output 4 -65 dB