Performance veri
fi
cation
GPI input functional test
This procedure checks that the GPI input is functioning correctly. If you have just
completed the previous test, do the following:
1.
Con
fi
gure the GPI input of the SPG8000 to reset the program time:
a.
Press the
SYSTEM
button.
b.
Use the down (
▼
) arrow button to select
GPI
, and then press the
ENTER
button.
c.
Use the down (
▼
) arrow button until you see
INPUT TRIGGER
.
d.
Press the right (
►
) arrow button until you see
Reset Program Time
,
and then press the
ENTER
button.
2.
Check that the reference source is set to Internal as follows:
a.
Press the
REF
button.
b.
Use the right (
►
) or left (
◄
) arrow button to view
Internal
.
c.
Press the
ENTER
button.
3.
Press the
STATUS
button.
4.
Press the down (
▼
) arrow button to select
TIME : Internal
.
5.
Press the right (
►
) arrow button to view the Program Time, and then record
the value.
6.
Attach a 75
Ω
terminator to the GPI input for 2 seconds, and then remove it.
7.
Look at the program time now and compare it to the program time you wrote
down before. The time on the display should have reset to the default start
time of 00:00:00:00 and now be counting again.
8.
Record Pass or Fail in the test record.
SPG8000 Speci
fi
cations and Performance Veri
fi
cation
55
Содержание Tektronix SPG8000
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