Grass Valley 7600REF User Manual
Page 77
7600 SD/HD/MHD-REF — Instruction Manual
77
Specifications
Internal Reference Oscillator Stability
Nominal error
<
± 0.5Hz (0.1 ppm)
Temperature stability
(over oven operating temperature
range)
< ± 0.05 ppm
Ageing range (per year)
< 0.5 ppm
Warm up settling time to < 0.05 ppm
10 minutes @ 25C
Genlock Video Input Performance
Video input type
2 BNC high impedance loop through
Return loss @ subcarrier
< -40 dB
Video DC range
<
± 12V
Video signal amplitude (to keep unit
within specification)
300 mV sync/burst
± 6 dB
(285 mV 525 operation)
Sync attenuation below which signal
will be indicated as missing
- 8 dB (with respect to 300 mV/625 or 285 mV 525 operation)
Burst attenuation below which signal
will be indicated as monochrome
- 8 dB (with respect to 300 mV/625 or 285 mV 525 operation)
Sync frequency lock range
15.625kHz
± 1.5kHz (± 100 ppm) -625
15.734kHz
± 1.5kHz (± 100 ppm) -525
Subcarrier lock range
4.43361875MHz (625)
3.579545Mhz (525)
± 200Hz (±50 ppm)
2
Genlock video lockup time
< 7 seconds
Output sync jitter with respect to clean
genlock video input
< ± 3 ns
Output subcarrier with respect to clean
genlock video input,
lock mode = EXT 1/2/3
< ± 0.25 degrees
Output subcarrier with respect to clean
genlock video input
lock mode = EXT 4
< ± 2 degrees
Input video ScH phase over which an
ScH error is indicated
+90 ± 15 degrees, -90 ± 15 degrees (approx.)
Genlock video sync to output sync tim-
ing accuracy, over full operating tem-
perature range
< 5 ns
Genlock video subcarrier to output sub-
carrier phase accuracy over full operat-
ing temperature range
< 5 degrees
Vertical lockup rate, genlock video to
output, when unit set to line drop mode
1 line/5 field
Genlock Operational Control
Horizontal offset adjustment range
± 32 us
Horizontal offset resolution
1 ns
Horizontal offset accuracy
±
5 ns over full range
Subcarrier phase adjustment range
0 to 359.9 degrees
Subcarrier phase resolution
0.1 degree
Line offset adjustment range
1 line steps over entire 525/626 range
Table 6. 7600REF Specifications
Parameter
Value