11-9
IM 704210-01E
Troubleshooting and Maintenance
11
11.6 Carrying out the Performance Test
CAUTION
• Never apply a voltage exceeding the maximum input voltage to the input terminals of the instruments.
Damage to the input terminals may result.
• Never short-circuit the output terminals of the instruments or apply an external voltage to them.
Damage to the internal circuits may result.
Testing the Trigger Voltage Accuracy
Instruments required
Prepare the following instruments.
DC voltage generator
• Voltage accuracy: 1 mV or better
• Recommended instrument: Programmable DC voltage/current source 7651 (by Yokogawa)
Test method for trigger voltage accuracy using the above recommenced
instruments is given below.
Connecting the instruments
• Make sure that the power to each instrument is OFF, then connect the instruments to each other
as illustrated below.
• Connect the output of the DC voltage generator to the input terminal (CHA or CHB) of the
TA320.
765 1
P ROGRAMABLE DC S OURCE
YO KO G AWA
TA320
YO KO G AWA
1 00 ps Resolu t ion 14 MS/ s
T im e In te rv al Analy ze r
TA320
DC voltage generator (7651)
CHA
CHB
OUTPUT
Setting the instruments
• TA320: Input settings: DC coupling, 1 M
Ω
, trigger level = 0V
• 7651: Output level
: 4.000V
: 2.000V
: 0V
: –2.000V
: – 4.000V
Note
If a noise is generated due to the environment, connect a capacitor (1 uF) between the signal cable and
ground.