
TDR9000
™
Circuit Breaker Test System User’s Guide
72A-1898 Rev. A 11/01
4-35
Monday
, November 26, 2001 1:09 pm
N
OTE
Make sure that the probe is not attached to, or placed near,
current-carrying wires during the zeroing process.
e. Click the
Probe Zero
button on the Virtual Front Panel.
The following message displays on the Virtual Front Panel:
Adjust probe until tone becomes constant. The process ends
automatically when the probe is correctly adjusted for
2 seconds.
f. Slowly adjust the thumbwheel on the top of the probe until
the modulated tone remains constant for two seconds.
When the probe reaches zero offset, the tone becomes steady.
If zero offset is maintained for two seconds, the tone stops and
the channel indicator turns green (Figure 4.14).
Figure 4.14 Probe Zero Indicator
g. Repeat this procedure for any additional probes.
N
OTE
If no activity is detected on the channel within 30 seconds, an error
message appears on the Virtual Front Panel. If the process fails, the
Probe Zero button remains red and the following error message
appears:
Process incomplete, Probe not zeroed
. Pressing OK removes
the error message, leaving the Probe Zero button red.
2.
Leave the probe on with the trigger locked in the ON position. Place
the range switch on the probe in the desired position.
N
OTE
Be careful not to disturb the thumbwheel.
3.
Securely clamp the probe around the wire that carries the current to
be monitored.
Probe Zero
Indicator
Содержание TDR9000
Страница 26: ...xxii 72A 1898 Rev A 11 01 Monday November 26 2001 1 09 pm...
Страница 50: ...Step 5 Saving Test Results 1 24 72A 1898 Rev A 11 01 Monday November 26 2001 1 09 pm...
Страница 98: ...3 28 72A 1898 Rev A 11 01 Monday November 26 2001 1 09 pm...
Страница 200: ...Disconnecting After the Test 4 102 72A 1898 Rev A 11 01 Monday November 26 2001 1 09 pm...
Страница 362: ...B 34 72A 1898 Rev A 11 01 Monday November 26 2001 1 09 pm...
Страница 388: ...D 6 72A 1898 Rev A 11 01 Monday November 26 2001 1 09 pm...
Страница 392: ...E 4 72A 1898 Rev A 11 01 Monday November 26 2001 1 09 pm...
Страница 394: ...F 2 72A 1898 Rev A 11 01 Monday November 26 2001 1 09 pm...
Страница 442: ...I 32 72A 1898 Rev A 11 01 Monday November 26 2001 1 09 pm...
Страница 454: ...I 12 72A 1898 Rev A 11 01 Monday November 26 2001 1 09 pm...