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Specifications
5–16
1780R-Series Operator’s Manual
Table 5–7: Vectorscope Vector Display (Cont.)
Characteristics
Supplemental
Information
Performance
Requirements
Display
Vector Phase
Accuracy
±1.25_.
Measured with color bar
signal.
Vector Gain Accuracy ±2.5% (1.25 IRE).
Quadrature Phasing
±0.5_.
Subcarrier Regenerator
Pull-In Range P
A
L in
s
t
r
u
me
nt
s
a
re
t
es
t
ed
b
(NTSC) ±50 Hz of F
SC
.
to 10 Hz,
b
ut typically lock
(PAL) ±10 Hz of F
SC
.
to within 50 Hz.
Pull-In Time Within 1 second, with sub-
carrier frequency within
50 Hz (10 Hz for PAL
instruments) of F
SC
.
Phase Shift with
Subcarrier Frequency
Change
(NTSC)
±0.5_ from F
SC
to (F
SC
+50 Hz), or F
SC
to (F
SC
–50 Hz).
(PAL)
±0.5_ from F
SC
to (F
SC
+
10 Hz), or F
SC
to (F
SC
–10 Hz).
Phase Shift with Burst
Amplitude Change
±2_ from nominal burst ampli-
tude to ±3 dB.
Internal or External burst
reference.
Phase Shift with Input
Channel Change
±2_.
With EXT REF selected:
Channel A to CH B;
Channels B1, B2, B3 to
one another
Phase Control Range
360_ continuous rotation.
Specifications
5–16
1780R-Series Operator’s Manual
Table 5–7: Vectorscope Vector Display (Cont.)
Characteristics
Supplemental
Information
Performance
Requirements
Display
Vector Phase
Accuracy
±1.25_.
Measured with color bar
signal.
Vector Gain Accuracy ±2.5% (1.25 IRE).
Quadrature Phasing
±0.5_.
Subcarrier Regenerator
Pull-In Range P
A
L in
s
t
r
u
me
nt
s
a
re
t
es
t
ed
b
(NTSC) ±50 Hz of F
SC
.
to 10 Hz,
b
ut typically lock
(PAL) ±10 Hz of F
SC
.
to within 50 Hz.
Pull-In Time Within 1 second, with sub-
carrier frequency within
50 Hz (10 Hz for PAL
instruments) of F
SC
.
Phase Shift with
Subcarrier Frequency
Change
(NTSC)
±0.5_ from F
SC
to (F
SC
+50 Hz), or F
SC
to (F
SC
–50 Hz).
(PAL)
±0.5_ from F
SC
to (F
SC
+
10 Hz), or F
SC
to (F
SC
–10 Hz).
Phase Shift with Burst
Amplitude Change
±2_ from nominal burst ampli-
tude to ±3 dB.
Internal or External burst
reference.
Phase Shift with Input
Channel Change
±2_.
With EXT REF selected:
Channel A to CH B;
Channels B1, B2, B3 to
one another
Phase Control Range
360_ continuous rotation.