Instruction manual

Introduction and Specifications
1720/1721
1-5
Table 1- 2: Vector mode (cont.)
Characteri sti c
Step
number
Supplemental informationPerform ance requirement
Subcarrier regenerator
NTSC pull--in range
PAL pull--in range
Pull-- in time
Phase shift with subcarrier freq-
ency change (NTSC)
Phase shift with subcarrier freq-
uency change (PAL)
Phase shift with burst amplitude
change
Phase shift with input channel
change
Phase shift with VAR GAIN control
Phase cont rol range
Burst jitter
±50 Hz of F
sc
±10 Hz of F
sc
±2° from F
sc
to (F
sc
+ 50 Hz) or F
sc
to
(F
sc
-- 50 Hz)
±2° from F
sc
to (F
sc
+ 10 Hz) or F
sc
to
(F
sc
-- 10 Hz)
±2° from nominal burst amplitude to
±6dB.
±0.5°
±1° as gain varies from 3 dB to --6 dB.
<0.5°
Subcarrier regenerator f reeruns in
absence of appropriate signal.
Reference can be burst of either
displayed signal or external reference
signal.
PAL unit s are tested to 10 Hz, but
typically lock to within 50 Hz.
Within 1 second, with subcarrier
frequency wi thin 50 Hz (10 Hz for PAL)
od F
sc
.
With EXT REF selected.
360° continuous rotat ion.
With 140 IRE (1 V PAL) composite
video input. INT or EXT referenced.
6
6
6
6
7
7
7
Display characteristics
Differenti al phase
Differenti al gain
Position cont rol range, horizontal
Position control range, vertical
Clamp stability
Variable GAI N range
±1°
±1%
At least .25” (6 mm) from center.
At least .25” (6 mm) from center.
0.0156” (0.4 mm) or less.
+14 dB to --6 dB of 75% color bar
preset gai n.
Measured with 140 IRE (1 V PAL)
linearity si gnal (5 st ep, 10 step, or
ramp) wit h 40 I RE (300 mV PAL) of
subcarrier.
Center spot movem ent wi th PHASE
control rotation.
+5 to --0.5 amplitude.
8
9
9
10