Operating instructions

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RF Technology R800 Page 19
7 SPECIFICATIONS 7.4.18 Audio Distortion
Discriminator and Sub-Audio Level:
Nominally equal to 1 volt peak at rated system deviation.
7.4.16 Audio Distortion
With 750uSec. De-Emphasis: Less than 3% at 1KHz and 60% of rated system
deviation.
With Flat Response: Less than 5% at 1KHz and 60% of rated system deviation.
7.4.17 Channel Select Input/Output
Coding: 8 Lines BCD coded 00-99
Logic Input Levels: 0=<0.4Volts
1=>3.5Volts
Internal 10K pull down resistors selects Ch.00 when all inputs are O/C.
7.4.20 Carrier Operated Switch Output
Floating Opto-Coupler Output: The carrier operated switch output is via an opto-coupler.
Collector and emitter connections are available to allow connection for source or sink.
The opto-coupler can be linked inside the receiver to be on when a carrier is detected or to be
on in the absence of carrier.
Connection to Remote Switch via 600? Line: Internal connections are provided so that the
opto-coupler can be connected to the 600? line for use over a single pair.
Current Source/Sink, Collector Voltage: Ic = 10mA Maximum
Vc = 30Volts Maximum.