ZONEMIX
INSTALLATION AND OPERATION MANUAL
7
BASIC SETUP AND OPERATION
POWER REQUIREMENTS
The ZONEMIX operates at 24V with a maximum 2A current draw (dependant on number of accessories and paging stations
connected). The DC input accepts a 5.5/2.1mm plug with tip positive and ring negative connection.
MOUNTING
The ZONEMIX is a one rack unit high (1RU) and will fit a standard EIA 19” rack.
BALANCED INPUT WIRING
WARNING: Input signal ground should NOT be used as a safety ground (earth).
The balanced input to the ZONEMIX is 3-pin configuration and requires all three pins to be connected. Only high quality twin-core
shielded cable should be used.
Pin 1 = Signal Ground
Pin 2 = Hot (non-inverting or in phase)
Pin 3 = Cold (inverting or reverse phase)
When wiring from an unbalanced source you must ensure that pin 3 is connected to pin 1 (input ground), either by linking the pins in
the input connector or by the source equipment’s output wiring.
When wiring for an unbalanced source:
Pin 1 = Signal Ground
Pin 2 = Hot (non-inverting or in phase)
Pin 3 = Signal Ground
SENSITIVITY
Each channel of the ZONEMIX has a nominal balanced input impedance of 30kOhms (@1kHz) and should not present a difficult load
for any signal source.
Your signal source (i.e. the equipment feeding signal to the mixer) should have an output impedance of 600 Ohms or lower to avoid
unwanted high frequency loss in the cabling.
