8
CONTROLS AND INDICATORS
Fig. 1. Model 2522C Controls and Indicators.
GENERAL FUNCTION CONTROLS
X-Y:
used in conjunction with the
X-Y
control and
1. ON Indicator.
Lights when oscilloscope is “on”.
Trigger SOURCE
switch to enable X-Y display
mode.
2. POWER Pushbutton.
Turns oscilloscope “on” and
“off”.
DUAL:
Displays the channel 1 and channel 2 signals simul-
3. INTENSITY Control.
Adjusts brightness of trace.
taneously. Dual-trace mode may be either alternate
or chopped sweep; see the description under
CHan-
4. TRACE ROTATION Control.
Adjusts to maintain
trace at a horizontal position.
nel 1 POSition/PULL CHOP
control.
ADD:
5. FOCUS Control.
Adjusts trace focus.
The inputs from channel 1 and channel 2 are
6. GND Terminal.
Oscilloscope chassis ground
jack, and earth ground via three-wire ac power cord.
summed and displayed as a single signal. If the
Channel 2
POSition/PULL INVert
control is
pulled out, the input from channel 2 is subtracted
7. CAL Terminal.
Terminal provides 0.5 V p-p, 1 kHz
(nominal) square wave signal. This signal is useful for
checking probe compensation adjustment, as well as
from channel 1 and the difference is displayed as a
single signal.
providing a rough check of vertical calibration.
9. CH1 AC-GND-DC Switch.
Three-position lever
switch with the following positions:
VERTICAL CONTROLS
AC:
8.
VERTical MODE Switch.
Selects vertical display
mode. Four-position lever switch with the following
positions:
CH1:
Displays the channel 1 signal by itself.
CH2/X-Y:
CH2:
displays the channel 2 signal by itself.
Channel 1 input signal is capacitively coupled; dc
component is blocked.
GND:
Opens signal path and grounds input to vertical
amplifier. This provides a zero-volt base line, the
position of which can be used as a reference when
performing dc measurements.
