Main Controls: Input - Ametek 7230 Instruction Manual

Chapter 5, WEB CONTROL PANEL OPERATION

5.3.03 Main Controls: Input

5-16
The Input controls, shown in figure 5-20, affect the signal channel.
AC Gain
The AC gain control allows the AC gain to be adjusted from 0 dB to 90 dB in 6 dB
steps, although not all settings are available at all full-scale sensitivity settings.
To obtain the best accuracy, use the highest value of AC Gain that is possible
without causing signal input overload, indicated by bit 6 in the Status Byte (see
section 5.3.11) being red. The Input Limit value, displayed in the Status panel, is the
zero to peak signal that may be applied without causing signal overload.
Input mode
This control sets the preamplifier input configuration to either voltage or current
mode.
A (voltage)
The signal channel input is a single-ended voltage input to the BNC connector
on the front panel marked A.
-B (voltage)
The signal channel input is an inverting single-ended voltage input to the BNC
connector on the front panel marked B (I).
A-B (voltage)
In this setting the signal channel input is a differential voltage input connected to
the BNC connectors on the front panel marked A and B (I).
B (current^6)
In this setting the signal channel input is a single-ended current input connected
to the BNC connector on the front panel marked B (I), and uses the wide
Figure 5-20, Main Controls: Input