TM 11-6625-3025-14/ET426-AA-MMA-010/E154 VII210/T.O. 33A1-8-902-1-1
Table 3-1. Test Pattern Generator, Controls and Indicators - Continued
Control/indicator
Function
RESOLUTION Selector
When main function selector is in the RESOLUTION position, this switch permits
(rotary)
selection of RESOLUTION repetition rate that is in use.
RESOLUTION format
Selects either CONTINUOUS or BURSTS resolution pattern, not operable in
(toggle)
REFERENCE position.
PATTERN POLARITY
Selects either WHITE-on-BLACK or BLACK-on-WHITE patterns for BAR,
(toggle)
DOT,WINDOW, and related functions.
H SPACING
Adjusts the width between pattern elements in the horizontal dimension of the
television display, selecting the number of H elements which will be displayed for the
BAR, DOT, H BAR and V BAR patterns.
V SPACING
Adjusts the width between pattern elements in the vertical dimension of the
television display, and therefore controls the number of V elements which will be
displayed for the BAR, DOT, H BAR and V BAR patterns.
H POSITION
Controls the position of the pattern in the horizontal dimension of the television
raster for appropriate patterns.
V POSITION
Controls position of the pattern in the vertical dimension of the television raster for
appropriate patterns.
VIDEO LEVEL
Controls the amplitude of video portion of the composite signal which is presented at
the output.
POWER ON/OFF switch
Applies 115 VAC, 50 - 400 Hz to test pattern generator in the ON position.
(toggle)
generator in the ON position.
AC power on indicator
Illuminates when 115 volts, 50 - 400 Hz is (red) applied to power supply circuit
(red)
Test points
To verify presence of proper H DRIVE, V DRIVE, BLANKING, SYNC and VIDEO
output signals at the inputs and outputs.
3-4
