TM 11-6625-1668-12
Control, Indicator, or Connector
Function
VARIABLE
Used for calibration of VERTICAL VOLTS (MA)/CM ranges.
(adjustable concentric potentiometer,
used in conjunction with VERTICAL
VOLTS (MA)/CM switch).
VERT POS
Provides vertical position control of CRT signal display pattern.
(adjustable potentiometer)
FOCUS
Used for focusing the CRT trace to a fine line pattern.
(adjustable potentiometer)
Sw Pos
Connection
Z MARKERS
(2-position toggle switch)
ON.................................
Provides markers for each transition on CRT display.
OFF...............................
Removes transition markers from CRT display.
ASTIG
(adjustable potentiometer)
Provides a sharper CRT display pattern. (Used in conjunction with the FOCUS control.)
INTENSITY CRT
(adjustable potentiometer)
Provides intensity control of CRT display.
INTENSITY SCALE
(adjustable potentiometer concentric
Provides graticule illumination control.
with CRT potentiometer)
HORIZONTAL GAIN
(adjustable potentiometer)
Provides control of horizontal gain.
HORIZONTAL POSITION
(adjustable potentiometer, concentric
Provides horizontal position control of CRT signal display pattern.
with GAIN potentiometer)
Sw Pos
Connection
DISPLAY RELEASE RATE
(8-position rotary switch)
VARIABLE ....................
Provides variable sweep release.
NORMAL.......................
Provides normal sweep release.
MAN ..............................
Enables manual sweep release.
Sw Pos
Connection
SINGLE
(spring loaded toggle switch in
SINGLE.........................
Releases a single sweep when DISPLAY RELEASE RATE switch is set to
conjunction with DISPLAY RELEASE
ON.
RATE switch in MAN position)
TRIGGER & SWEEP SELECT
(8-position rotary switch)
AUTO ............................
Selects synchronous, digital sweep.
FREE RUN ...................
Stops trigger and sets re sweep to FREE RUN.
INT (EXT TRIG)............
Switches re sweep to external trigger operation.
TIME MILLISEC
(4-position rotary switch)
0.05 to 500 ....................
Selects sweeptime duration for FREE RUN and INT (EXT TRIG) modes of
TRIGGER & SWEEP SELECT SWITCH.
VARIABLE
(adjustable potentiometer)
Adjusts potentiometer for TIME MILLISEC switch.
Sw Pos
Connection
POWER
((2-position toggle switch)
ON.................................
Connects 115-volt 60-hertz operating power to the oscilloscope.
OFF...............................
Disconnects operating power.
POWER
(indicator lamp)
Lights when operating power is applied and POWER switch is ON.
3-5
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