ATO-400P / ATO-600P Operating Procedures
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7.4 Run Automatic Test Procedure
Automatic Test Mode allows the user to initiate a test by applying the sense cables across the
resistive load. This feature is handy when the user wants to take multiple resistance readings of
the same load or of different loads in the same current path.
The burn-in time for Automatic Test is set for 5 seconds. The resistance reading is stored in the
ATO working memory. The user can save up to 96 readings per test record. The ATO Flash
EEPROM can store 63 test records.
The following procedure describes the steps to measure an unknown resistance using the
Automatic Test Mode.
NOTE
The current cables should be connected across the resistive load to establish the current path.
Removing and reconnecting one or both sense cables starts a new test.
Table 6.0 Run Automatic Test Procedure (Measure an Unknown Resistance)
STEP
ACTION
ATO DISPLAY
6-1
Begin RUN TEST procedure: Press key #1
on START MENU.
6-2
Select Automatic test by pressing key #2.
The “SELECT TEST CURRENT” menu
appears.
Press key (1 to 7) for desired test current.
For this example, a 100A test current was
selected. Go to step 6-4.
For a user-defined (CUSTOM) test current,
press key # 8 and go to step 6-3.
NOTE
Burn-in time is set for 5 seconds in
Automatic Test.
Or
6-3
Custom test current levels (in 1 amp steps)
are entered via the keypad. When finished
entering the value press the “ENTER” key
and go to step 6-4. For this example, a 95A
test current was entered.
NOTE
Burn-in time is set for 5 seconds in
Automatic Test
or
6-4
The auto test mode START menu now will
display the selected test current.
SELECT TEST CURRENT:
1. 10A 2. 25A 3. 50A
4. 100A 5. 200A 6. 300A
7. 400A 8. CUSTOM
SELECT TEST CURRENT:
1. 10A 2. 25A 3. 50A
4. 100A 5. 200A 6. 300A
7. 600A 8. CUSTOM
ENTER TEST CURRENT
(10 to 400)
95 AMPS
ENTER TEST CURRENT
(10 to 600)
95 AMPS
CURRENT: 100.0
AMPS
BURN-IN:
AUTO
“START” TO RUN TEST
1.NORMAL TEST
2. AUTOMATIC TEST
