Performance Verification
4-4 SPG600 & SPG300 Sync Pulse Generators Service Manual
Performance Verification Procedures
You must performe the Preparation for Performance Verification (on page 4-1)
before proceeding.
Subcarrier Frequency
This test verifies the subcarrier frequency accuracy of black burst signals. The
following equipment is required for the test:
Frequency counter
75 Ω BNC cable
75 Ω feed-through terminator
Perform the following procedure to verify the subcarrier frequency accuracy of the
black burst signal.
1. Use the 75
Ω BNC cable and the 75 Ω feed-through terminator to connect the
CH 4 connector on the sync pulse generator to the INPUT A connector on the
frequency counter. See Figure 4-1.
Figure 4-1: Equipment connection for verifying subcarrier frequency
2. Set the frequency counter to the frequency measurement mode (if necessary),
and then set the Gate Time to < 2s.
3. Output the NTSC subcarrier calibration signal as follows:
a. Press the VIDEO, GENLOCK, and PANEL ENABLE buttons
simultaneously, and then release the VIDEO and GENLOCK buttons to
restart the instrument in Factory mode.
b. Press the SYSTEM button to display the System menu.
c. Press the up (
S) or down (T) arrow button to select CONFIGRATION.
NOTE. The performance verification procedures are common for both the SPG600
and SPG300 except for optional output connectors.
SPG600 rear panel
75
Ω feed-through
terminator
75
Ω BNC cable
Frequency counter (MF1603A)
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