Chapter 5, FRONT PANEL OPERATION
5-9
INPUT SHELL
The input connector shells can optionally be floated or connected to chassis ground
as follows:-
GROUND
The shells of the A and B (I) connectors are connected directly to chassis
ground.
FLOAT
The shells of the A and B (I) connectors are connected to chassis ground via a
1 k resistor.
INPUT MODE
This control sets the preamplifier input configuration to either voltage or current
mode, and also changes the function of the INPUT CONNECTOR control.
INPUT CONNECTOR
In voltage input mode, as shown in figure 5-5, this control has four settings:-
A
The signal channel input is a single-ended voltage input to the BNC connector on
the front panel marked A.
–B
The signal channel input is an inverting single-ended voltage input to the BNC
connector on the front panel marked B (I).
A-B
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).
OFF
The input is disconnected in this setting.
In current input mode, shown in figure 5-6, this control has two settings:-
WIDE-B/W (Wide Bandwidth Converter)
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
bandwidth current-to-voltage converter.
LO-NOISE (Low Noise Converter)
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 low-noise
current-to-voltage converter.
Signal Channel Menu 2
Pressing a key adjacent to the Signal Channel Menu 2 item accesses the Signal
Channel Menu 2, which is shown in figure 5-7.
To Next Page
Loading...