Controls, Connectors, and Indicators
(20) Auxiliary Ground JackāProvides an auxiliary chassis ground con-
nection (banana jack) between the equipment under test and the
2245A.
( 2T) Channel 3 and Channel 4 POSITION ControlsāAdjust vertical po-
sition of Channel 3 and Channel 4 signal displays.
(2 2 )
Channel 3 and Channel 4 VOLTS/DIV SwitchesāSelect two basic
/ deflection factors for Channel 3 and Channel 4, 0.5 volt/division (butī¦
ton lit) or 0.1 volt/division (button not lit).
The VOLTS/DIV switch setting displayed in the crt readout reflects
the attenuation factor of coded attenuator probes that are connected
to the vertical inputs.
(23 J
CH 3 and CH 4 Input ConnectorsāConnect signals to the inputs of
the Channel 3 and Channel 4 vertical attenuators. Input coupling is dc
only.
The input connectors are BNC with probe-coding ring contacts (the
same as Channel 1 and Channel 2). The limited choice of deflection
factors for the Channel 3 and Channel 4 inputs makes them useful for
digital and trigger signals.
Horizontal
Refer to Figure 2-4 for location of items 24 through 31.
(24) POSITION ControlāAdjusts the horizontal position of the waveform
displays on the crt.
(2?) X10 MAG SwitchāMagnifies the A and B sweeps by a factor of 10
and extends the fastest sweep speed to 2 ns per division. The center
portion of an unmagnified sweep display will be within 0.5 division of
the center of a magnified sweep display. No action occurs in X-Y
mode.
When X10 MAG is on, a X10 symbol is displayed next to the SEC/DIV
readouts. The readouts reflect correct display sweep speeds for the
XI0 MAG displays and the unmagnified displays.
2245A Operators 2-7
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