4
To select which input is to be amplified, push the „Input Select‟
button and turn the knob until desired configuration is displayed.
“Gnd” ignores both input lines and internally ties the inputs to 0
Volts for equipment setup and testing. The “A” setting amplifies
the single-ended signal on the A input. The “-B” setting amplifies
and inverts the single-ended signal on the –B input. The “A-B”
setting amplifies the difference between the A and –B inputs.
To set the input coupling, push the „Input Coupling‟ button and
turn the knob until the desired value is displayed, AC or DC.
Handy tips: For Input Select and Input Coupling, instead of
turning the knob to change the setting, you may also simply hit the
parameter button repeatedly to scroll through the values. For
example, the first time you push Input Select, the present input
setting is written to the alphanumeric display without changing it.
Each additional push of the button, however, will advance the
amplifier through its four options: Gnd, A, -B, A-B. The same
holds for Input Coupling.
It is important to remember that pushing a parameter button once
does not change the amplifier settings; it simply changes the
alphanumeric display. Turning the knob is the way to change the
amplifier‟s internal settings.
The amplifier‟s output is not affected by which parameter happens
to be displayed. You may want to leave the most frequently
adjusted parameter on the display. The amplifier will retain all the
settings for each channel when power is turned off, even if the unit
is unplugged.
