ZETRON 4000 Series, Installation Manual

Page: 26 / 418

Introduction
26 025-9533Y
Receive Electrical Specifications
Auxiliary Input/Output Electrical Specifications
Input Impedance 600 or 10 k  (4-wire)/3500 ohm (2-wire)
Line Balance 66 dB at 1000 Hz
Rx Sensitivity -30 to -28 dBm max at knee of compression;
adjustable
Freq. Response -3 to +1 dB from 300-3400 Hz (except GT notch)
Compression Input level increase of 30 dB above the knee of
compression causes <3 dB output increase
Distortion < 2%
Call Light
Sensitivity
-20 dB below knee of compression
Audio Output 5 watts for each built-in speaker
Mute Adjustable to -48 dB (with Individual Volume Control
Option) or full mute. Mute time 1 sec to indefinite
Outputs (12 per card)
Relay Contact Current 1.0 Amp
Isolation Voltage 50 Volt with respect to system ground and between contacts
Optically Isolated Inputs (8 per card)
“On” Current Range +5 to +25 mA
“Off” Current Range -25 to +2 mA
Maximum Positive C25 mA continuous, +40 mA peak
Maximum Negative Current -25 mA continuous, -40 mA peak
Equivalent Series Resistance 405 ohms plus a 0.7 Volt drop (forward)
Isolation Voltage
50 Volt with respect to system ground
Non-Isolated Inputs (32 per card)
“On” Voltage Range +3.5 to +30 Volts
“Off” Voltage Range -30 Volts to +0.9 Volts
Equivalent Parallel
Resistance
5 k  pulled to +8.5 Volts