Connecting The Input Signal; Connecting The Ac Supply; Figure 3.1 - Close-Up Of The Output Terminal Resistor; Figure 3.2 - Controlled Voltage Hookup - AE Techron 2105 Operator's Manual

2105 OPERATOR'S MANUAL – SECTION 3
terminated with #8 to ¼ in. ring terminals, tinned
wires up to 10GA in size, or bus bars with 0.20 in.
(5 mm) OD holes (minimum) up to 0.50 in. (12.7
mm) OD holes (maximum) are recommended
when connecting to the output terminals.
Connect the load across the terminals marked
"OUTPUT" (positive) and "COM" (negative/
ground). The third terminal, "CHASSIS GROUND"
is connected to the amplifier chassis/power cord
ground and can be connected to an external
ground point such as the rack chassis. See Figure
3.2.
3.3

Connecting the Input Signal

The signal is connected to the amplifier through a
"SIM" (Specialized Input Module) located on the
amplifier back panel (see Figure 3.3). The SIM
card offers the choice of BNC or terminal block
input connectors.
The Input Select switch, located on the SIM mod-
ule between the input connectors, allows conve-
nient selection of balanced or unbalanced input
wiring and also can function as a ground-lift switch
for the BNC input connector. The Input Select
switch functions by connecting/ disconnecting the
inverting (–) pin on each input connector to the
amplifier ground through a 4.7-ohm resistor (see
Figure 3.4). When the Input Select switch is in the
LEFT position, the shield on the BNC connector
and the inverting (–) pin on the terminal block con-
nector are tied to the amplifier ground, allowing the
connectors to be used for Unbalanced input wiring.
When the Input Select switch is in the RIGHT
position, the inverting (–) pin on the terminal block
connector is floating, allowing the connector to be
used for Balanced input wiring.
IMPORTANT: The Input Select switch can also
function as a Ground Lift switch for the BNC
Input connector. If circulating currents/ground
loops/60-Hz Hum occur when using the BNC
Input, move the Input Select switch to the right
to lift the ground on the connector.
97-2105006_4-2-15
Figure 3.1 – Close-up of the Output Terminal Resistor
Figure 3.2 – Controlled Voltage Hookup
We recommend that you use cables that are high
quality and shielded to minimize noise and to
guard against possible feedback.
Note: See the "Applications" section for informa-
tion on using the Interlock – I/O Connector located
on the SIM card.
3.4
The power cord connects to a standard 20 amp
3-pin IEC-type male connector on the back panel
(see Figure 3.5). Make sure the Breaker/Switch on
Information subject to change
Figure 3.3 – Close-up of SIM card

Connecting the AC Supply

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