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Specifications
5–14
1780R-Series Operator’s Manual
Table 5–6: Synchronization (Cont.)
Characteristics
Supplemental
Information
Performance
Requirements
AFC Sync
Horiz. Freq. Range 15.75 kHz ±200 Hz.
Lock-In Time <1 second.
Sync Jitter
Comp sync or
video
≤10 n
s
; with th
e
a
dd
ition o
f
36 dB white noise, ≤12 ns.
Variable APL
(10–90%)
Jitter with respect to
white noise
≤30 ns. Doubles with each 6 dB
increase in white noise.
Noise Immunity <90 ns jitter, 1 V composite
video with –26 dB white
noise.
Jitter from missing line
sync pulses
<15 ns per missing sync
pulse. Maximum of 10
consecutive line sync
pulses.
Slow Sweep Triggering
Signal APL change from ≤10% – 90%. Front panel selectable for
either + or – level change.
Sensitivity 0.4 V to 2.0 V peak-to-peak
composite video with APL
change.
Rate ≥0.2 Hz. Free runs at rates less than
0.2 Hz or with no triggering
signal.
Specifications
5–14
1780R-Series Operator’s Manual
Table 5–6: Synchronization (Cont.)
Characteristics
Supplemental
Information
Performance
Requirements
AFC Sync
Horiz. Freq. Range 15.75 kHz ±200 Hz.
Lock-In Time <1 second.
Sync Jitter
Comp sync or
video
≤10 n
s
; with th
e
a
dd
ition o
f
36 dB white noise, ≤12 ns.
Variable APL
(10–90%)
Jitter with respect to
white noise
≤30 ns. Doubles with each 6 dB
increase in white noise.
Noise Immunity <90 ns jitter, 1 V composite
video with –26 dB white
noise.
Jitter from missing line
sync pulses
<15 ns per missing sync
pulse. Maximum of 10
consecutive line sync
pulses.
Slow Sweep Triggering
Signal APL change from ≤10% – 90%. Front panel selectable for
either + or – level change.
Sensitivity 0.4 V to 2.0 V peak-to-peak
composite video with APL
change.
Rate ≥0.2 Hz. Free runs at rates less than
0.2 Hz or with no triggering
signal.