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Performance Verification
SPG 422 Service Manual (B034000 and above)
4–39
35. Burst Lock Phase Change with Input Burst Amplitude
≤
1
°
(Will remain locked with 60 Hz hum < 1 V
p-p
)
a. Connect the equipment as shown in Figure 4–11.
1780
SPG 422
Black 1
Genlock 2
CH 2
CH B1
1V
p–p
at 60 Hz
BNC T-Connector
Sine Wave Generator
75
termination
75
termination
TG 2000
AVG1 Output
BG1 Black Burst
Figure 4–11: Setup to check genlock with hum
b. Set the TG 2000 AVG1 to output 0% field signal.
c.
Set sine wave generator to output a 1 V
p-p
60 Hz signal as shown on
CH B1 on the waveform monitor.
d. Set the SPG 422 to burst lock to genlock input 1.
e.
Check that the SPG 422 is burst locked.
f.
Display CH A on the vectorscope using external reference.
Summary of Contents for SPG 422
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