Mi4M - Procom DVS-21 User Manual

User Guide
DVS-21

7.12 MI4M

Module for data acquisition and processing of 4 measuring microphones for automatic volume control of
amplifiers.
The module can process up to 4 microphones independently or as a group. It requires using the program
Volume control - automatic. There is also the configuration and calibration of control loops.
Parallel circuit During selection the ports are determined, which are summarized in the calculation. In
of ports
addition, the type of output as respective mean or maximum value can be determined.
Calibration Adjusting the measurement output to the real ambient noise in the immediate region of
offset the measurement microphone. (Hardware default setting, change usually not required)
Integration time determines the response of the measurement output to changes in ambient noise levels.
The measured values are recorded and calculated continuously. In normal operation, the output is only
activated by enabling line 1, right at the beginning of a PA.
Line function:
Port 1 - 4:
Line 1 CPU -> M Measured value during PA
Measurement output permanently (Commissioning, Volume control - automatic)
Line 9 CPU -> M (Adjustment control by Volume control - automatic program is inactive during this
time!)
Resetting the minimum and maximum values (Commissioning, Volume control -
Line 10 CPU -> M
automatic)
Measurement telegrams for monitoring: (00 00 01 3x yy) x = Type, y =
Output during PA (Line 1)
0x30h Measured value averaged (Criterion for program Volume control - automatic)
0x31h present value
Output at startup mode (Line 9), Display directly in the program Volume control - automatic
0x33h Measured value averaged
0x34h present value
0x35h Maximum value (since last reset)
0x36h Minimum value (since last reset)
0x37h Calibration offset (for info)
Display and control elements:
LEDs
GREEN - ON Measurement in progress
GREEN - OFF Idle state
GREEN - ON Ready power supply (48V)
GREEN - OFF Fuse burn-out (48V)
Line fuses
Microfuse of the supply voltage for connected devices
02/2018 • V.1.0 • L. Wolle
© 2017 ProCom
®
Professional Communication & Service GmbH • Technical changes reserved.
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