User guide

37
CHAPTER 2
The SIM 3 Hardware
2.3. SIM-3081 MICROPHONE SWITCHER
The SIM-3081 single, half-rack, 8-input mic-level switcher enables measurements in several
places (zones) by using multiple microphones in the room being analyzed. In addition,
its half-rack size provides complete flexibility for locating the switcher where you need it,
whether at front of house, a remote equipment room, or other location.
NOTE: The mic switcher can be installed inside the Mic Boot. This small,
portable case is designed to protect the mic switcher when it is placed in
remote locations in a venue; it is available as an accessory.
2.3.1. Front Panel
SIM-3081 Mic Switcher
Addr
+48v
Bus Pwr
Data
®
8
7
6
5
4
3
2
1
Bus Select LEDs
Mic XLR Inputs
48 V Phantom
Power LED
(Bus) Power LED
Data LED
Address Switch
0
2.3.1.1. Address Switch
Each mic switcher contains unique audio inputs. Therefore it must have a unique network
address in order for the SIM-3022 to select the proper mic channel for measurement. The
address switch selects the address of each microphone switcher. The address is for the SIM-
3022 analyzer to be able to control each switcher independently. Up to 10 addresses can be
selected (0-9).
CAUTION: Microphone switchers sharing the same address will fail to pass
signal to any bus in the system. The SIM 3 screen will show a switcher
address conflict in the Status bar, which normally is green and says “Acquiring Data”,
by changing to yellow and saying “Switcher Conflict.”
NOTE: Addressing for microphone switchers and line switchers are handled
separately, hence the address for any microphone switcher does not need to
be different from the address of any line switcher.