Service manual

© 2001 Wohler Technologies Inc. ALL rights reserved
16
ARS Analog Series User and Service Manual P/N 821518 Rev-B
Please refer to Figure-2a on the following page to familiarize yourself with the front panel features of the ARS
Analog series units. The following sections describe these features and are referenced, by number, to Figure-2a.
Note: Only one of seven possible front panel configurations is shown in Figure-2a (Model ARS-44B). However,
all controls and indicators function the same across the entire line of analog ARS models. See pages 6-11 for
illustrations of all front panel configurations available in the ARS Analog series.
1 Channel Select - Push Buttons
Push one of these buttons to select the input channel that will be routed to the configured output connector(s).
A single push selects the indicated channel. A green LED above the button (See Item 2, below) will light
up to indicate that the channel is selected. Pushing another Channel Select button selects a different channel
and automatically de-selects the previously selected channel. To select more than one channel, push on
one of the Channel Select buttons for a desired channel and hold it down while pressing additional buttons
one at a time, until all desired additional channels are selected.
2 Channel Select Indication - Green LEDs
These green LEDs light up to show that the associated Channel has been selected for routing to the output
connector(s). These LEDs will be unlit to indicate that the channel is not selected.
3 Power Indication - Green LED
When the supplied external power supply is connected to the power input on the rear panel (Item A,
below) and mains power is operating, then this LED will glow green.
Front Panel Features
Section 2: Operation
Rear Panel Features
Please refer to Figure-2a on the following page to familiarize yourself with the rear panel features of the ARS
Analog series units. The following sections describe these features and are referenced, by letter, to Figure-2a.
Note: Only one of nineteen possible rear panel configurations is shown in Figure-2a (Model ARS-44B). However,
general input and output characteristics are the same across the entire line of analog ARS models. See pages 6-11
for illustrations of all rear panel configurations available in the analog ARS series.
A Power Connector
Plug in the supplied external AC to 24VDC power supply into this connector to supply power to the ARS
unit
B Audio Inputs - Phoenix Connectors
Plug in your standard analog audio inputs into these "Phoenix" style, screw clamp, plug-in terminal block
connectors. There are from five to forty input connectors depending on the ARS model configuration being
used. Please note that due to the modular nature of the rear panel, there will be blank spaces on models
that are configured with less than forty input connectors and/or less than two output connectors.
C Audio Output(s) - 3-Pin, 5-Pin Male XLR or 8-Pin Din Connectors
These connectors provide outputs of the inputs as selected by the Channel Select buttons on the front panel
(Item 1, above). Output connectors may be configured using one or two 3-Pin male XLR, 5-Pin male XLR,
or 8-pin female DIN connectors, depending on the ARS model.
See page 20 for pin-out information for connectors used on all models and page 22 for function block
diagram examples of ARS configurations.