15 December 1965
ITEM NAME: INDICATOR GROUP
Equipments VC, VD, VE, VF series, VH, V3 and VJ-1.
a range strobe. Range marks appear on the cathode-
ray tube as concentric rings spaced at intervals that
represent distance from the radar antenna. The range
strobe appears as an expanding concentric ring whose
Type of Presentation: 1g-in. PPI
expansion is mechanically controlled by the operator.
Range, Max: 300 mi
When the range strobe ring passes through a target, the
Range, Min: 4 mi
target range is shown on a range-window on the front
Sweep Rate: 40 rpm max
panel. The range of a target at a distance of 28 miles or
Sweep Linearity: 1%
less is expressed in yards in the range yards window.
Range Marker Intervals: 1, 2, 5, 10, 25
The range of a target beyond 28 miles is expressed in
and 50 mi
miles in a rangemiles window.
Range Marker Pulse Width: 0.25 usec
Bearing is measured by an electronic bearing
Range Marker Accuracy: 1%
cursor. The cursor appears as a sweep whose azimuth
Range Strobe Pulse Width: 0.25 usec
is mechanically controlled by the operator. When the
Range Strobe Accuracy: 0.15 to 5 mi, 0.05
bearing cursor is activated, normal video is blanked
mi; 5 to 36 mi, 1%; 26 to 300 mi, 2%.
from the presentation. The cursor crank control is then
Input Trigger Pulse Width: 1 to 10 usec
hand-operated to make the cursor pass through the
Input Trigger Amplitude: 5 to 50v
target on the indication CRT.
The bearing thus
Pulse Repetition Rate: 6 to 3000 pps
determined is shown on the cursor bearing window. The
Video Input: 1 to 2.5v pos
Operating Voltages and Power Requirements:
measurements since parallax, a fault common to
115v, 60 cps, 1-ph, 180w
mechanical cursors, is eliminated.
RELATION TO SIMILAR EQUIPMENT
This equipment replaces Radar Indicating
PRINCIPAL COMPONENTS AND PHYSICAL DATA
NOTE: *Mounts on side of Indicator.
REFERENCE DATA AND LITERATURE