4Nsa - Procom DVS-21 User Manual

User Guide
DVS-21

7.5 4NSA

Audio Frequency (AF) interface module, serial, analog, for connecting four ProCom stations in 4-wire
technology, including fuse, each with a modem interface electrically isolated and short circuit proof.
Level incoming AF input gain (from the external device to the module)
Level outgoing AF output attenuation (from module to external device)
Operation mode
Modem (Master)
Modem (Slave)
no Modem
AF controlling
Display and control elements:
LEDs
GREEN - ON
GREEN - FLASHING
GREEN - FLASHING (slow) Faulty connection
GREEN - OFF
GREEN - ON
GREEN - OFF
Line fuses
02/2018 • V.1.0 • L. Wolle
© 2017 ProCom
Incoming
connection is
active
Outgoing
connection is
active
Idle state
Ready power
supply (48V)
Fuse burn-out
(48V)
Microfuse of the
supply voltage for
connected devices
®
Professional Communication & Service GmbH • Technical changes reserved.
Operating as a transmission line (master)
Operating as a transmission line (the opposite
side master)
with pure AF frequency, the modem can be
disabled
Activation of self-monitoring and adjustment of
the measurement interval.
The monitoring is done by playing and
receiving a measurement frequency via the
speaker and the microphone unit. The initiation
and evaluation of the received frequency is on
the module.
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