Extron Electronics MLA-VC10 - Manual (Page 19)

MLA-VC10 • Installation and Setup 2-7
Measuring the voltage for a TOA A-903 amplifier
Control terminals for several TOA amplifiers are two screw
terminals labeled "REMT VOL". They do not indicate which
terminal is for control voltage and which is the ground. Use a
voltmeter set for VDC to measure the voltage.
In figure 2-7, the measured voltage is positive, indicating that
the upper terminal is the signal voltage terminal and the lower
terminal is the ground. Write down the measured voltage and
which terminal is ground as this will be important when you set
the DIP switches.
N When measuring voltage, if the reading is positive, the
positive probe indicates the signal voltage terminal and
the ground probe indicates the ground terminal. If the
reading is negative, reverse the probes.
Figure 2-7 — Measuring control voltage for a
TOA A-903 amplifier
N The TOA 900 series needs different wiring to connect it
to the MLA-VC10 (see pages 2-14 and 2-15).