Performance veri
fi
cation
10.
Set the
BLACK 1
output on the SPG8000 unit under test to NTSC as follows:
a.
Press the
BLACK
button until you see
BLACK 1: FORMAT
on the
menu.
b.
If you see
NTSC
on the display, press the
ENTER
button. If you do not
see NTSC, press the right (
►
) arrow button until you do, and then press
the
ENTER
button.
11.
Connect
BLACK 1
of the reference unit to the reference input on the
waveform monitor, and terminate the loop through with a 75
Ω
terminator.
12.
Connect
BLACK 1
of the SPG8000 under test to the
CMPST A
input of the
waveform monitor, and terminate the loop through with a 75
Ω
terminator.
13.
Display the composite input on the waveform monitor and select external
reference.
14.
View the Vector Display in full screen mode.
15.
Use the variable gain function to expand the burst to overlap the compass
rose graticule.
16.
Write down the minimum and maximum vector phase you observe over a
30 second period.
17.
Calculate the difference and record the result in the test record.
18.
View the Timing Display in full screen mode.
19.
Record the timing value in the test record.
Frame timing accuracy when locked to GPS or GLONASS.
20.
View the Timing Display in full screen mode.
21.
Record the timing value in the test record.
SPG8000 Speci
fi
cations and Performance Veri
fi
cation
85
