1249B B&K Precision, 1249B Datasheet - Page 18

• Manufacturer Part Number: 1249B
• Description: COLOR GENERATORNTSC/RGB
• Manufacturer: B&K Precision
• Type: NTSC Benchtopr

Specifications of 1249B

• Patterns: Bar, Dot, Crosshatch, Raster
• Connection Method: RCA, RF, S-Video
• Power Source: 105,130VAC
• Signal Generator Type: NTSC Pattern
• Supply Voltage Range: 105V To 130V
• External Height: 86mm
• External Width: 290mm
• External Depth: 264mm
• Frequency: 30 Hz
• Equipment Type: NTSC Pattern Generators
• Lead Free Status / RoHS Status: na
• Lead Free Status / RoHS Status: na
• Other names: BK1249B

1. POWER Switch. Turns power on and off.
2. RGB TTL/LOW Switch.
3. CONVERGENCE Switches. Select one of four available
level. When this switch is released (LOW position), a positive
logic state at the RGB output jacks (R, G, and B BNC jacks and the
RGB 9-pin D-type connector) is at 0.8V ±0.2V level. When this
switch is engaged (TTL position), the pulses are at a TTL level.
This switch also selects interlaced or progressive scan for
convergence patterns: when the switch is released the
convergence patterns use interlaced scan, and then the switch is
engaged, the convergence patterns use progressive scan.
convergence patterns as follows:
CONTROLS AND INDICATORS
The DOT, LINE, RAST, and NTSC BARS
switches are mechanically interlocked: i.e., se-
lection of a new pattern automatically releases the
previous selection. Releasing all four switches by
partially pressing any one of them will provide a
color bats or staircase pattern with 100% white
level. The five selectable patterns are available at
the COMPOSITE VIDEO, IR/RF,
output jacks.
NOTE
Selects TTL or low RGB output
or RGB
18
5. RAST Switch. Selects a black or blank raster pattern. Sync and
6. NTSC BARS Switch. Selects NTSC Color Bar pattern.
7. COLOR OFF Switch. Works in conjunction with NTSC BARS switch
8. 4.5 MHz Switch. Turns 4.5MHz subcarrier (sound) on and off. When
reference black are provided for a blemish free raster.
and selects color or monochrome (black and white) output. When this
switch is engaged, the color subcarrier is switched off and the NTSC
BARS pattern will be displayed as shades of grey. When this switch is
disengaged, the color subcarrier is switched on and the NTSC BARS
pattern will be displayed in color.
this switch is engaged, a 4.5MHz sound carrier (modulated by
Only LINE switch engaged:
A single vertical and horizontal line intersecting at the center of the
screen.
LINE and 7 X 11 switches engaged:
7 horizontal lines and 11 vertical lines.
Only DOT switch engaged:
A single dot at the center of the screen.
DOT and 7 X 11 switches engaged:
7 horizontal rows by 11 vertical columns of dots.