Operating Basics
370B User Manual
2-11
. When copying, the 370B does not accept any type of interrupt.
HORIZONTAL. The HORIZONTAL control selects horizontal deflection factors
(VOLTS/DIV) and horizontal sources (COLLECTOR, BASE/EMITTER or
STEP GEN).
A full clockwise knob rotation does the following:
Selects COLLECTOR voltage source
Turns on the COLLECTOR indicator LED
Displays CRT readout for the horizontal deflection factor
While the Horizontal source is in the COLLECTOR position, the horizontal
deflection factor for COLLECTOR voltage can be selected from 50 mV to 500 V
in 1–2–5 sequence. When the CONFIGURATION mode is the BASE COLLEC-
TOR SUPPLY mode, base to emitter (V
BE
) is displayed on the horizontal axis.
Counterclockwise (ccw) rotation from 500 V/DIV of COLLECTOR position
enters BASE/EMITTER position and the BASE/EMITTER indicator LED turns
on. In BASE/EMITTER position, the control selects horizontal deflection factor
of either BASE or EMITTER voltage from 50 mV to 5 V in a 1–2–5 sequence.
Either BASE or EMITTER voltage is determined by the CONFIGURATION
mode, as shown in Table 2–2:
Table 2-2: CONFIGURATION Mode HORIZONTAL Voltage
CONFIGURATION HORIZONTAL VOLTAGE
A full counterclockwise knob rotation selects STEP GEN, which turns on
the STEP GEN indicator LED, and the HORIZ/DIV and the horizontal
CURSOR readouts disappear.
VERTICAL. The VERTICAL control selects vertical deflection factors and vertical
sources (COLLECTOR/BASE or STEP GEN).
Full ccw rotation of the VERTICAL control displays STEP GEN signal source
and turns on STEP GEN LED. When STEP GEN is selected, the VERT/DIV and
vertical CURSOR readouts disappear.
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General