TPI Amp Plus, Instruction Manual

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24
e. Measuring Resistance
WARNING!
Do not attempt to make resistance measurements with
circuit energized. For best results, remove the resistor
completely from circuit before attempting to measure it.
NOTE:
To make accurate low ohm measurements, short the
ends of the test leads together and record the resistance
reading. Deduct this value from actual readings.
Instrument set-up:
FUNC. BLACK RED MIN MAX
TEST LEAD TEST LEAD READING READING
Ω
COM V/
Ω
0.1
Ω
39.99K
Ω
Measurement Procedure:
1. Disconnect power to circuit to be measured.
2. Plug black test lead into the COM input jack.
3. Plug red test lead into V/
Ω
input jack.
4. Set the rotary switch to the
Ω
function.
5. Connect test leads to circuit to be measured.
6. Read the resistance value on the 296.
Optional Modes
• HOLD: Freezes the reading on the LCD.
• RANGE: Manually ranges the instrument.
• TRIM: Push TRIM button to stabalize reading.
• REC: Record minimum, maximum and
average values.
!
11
3. Specifications (cont.)
c. ACA
Range Res. Accuracy
Freq. Response
40A 0.01A ±2% of reading, ±20 digits 45Hz to 60Hz
±4% of reading, ±20 digits 30Hz to 45Hz
±4% of reading, ±20 digits 60Hz to 1KHz
400A 0.1A ±2% of reading, ±10 digits 45Hz to 60Hz
700A 1A ±5% of reading, ±10 digits 30Hz to 45Hz
±5% of reading, ±10 digits 60Hz to 1KHz
d. DCA
Range Resolution Accuracy
40A 0.01A ±2% of reading, ±20 digits
400A 0.1A ±2% of reading, ±10 digits
700A 1A ±2% of reading, ±15 digits
e. OHM (Resistance,
Ω
)
Range Res. Accuracy Overload
Protection
400
Ω
0.1
Ω
±1% of reading, ±10 digits 600V DC or
4k Ω 0.001k Ω ±1% of reading, ±3 digits AC Peak
40k
Ω
0.01k
Ω
f. Continuity Buzzer
Test Voltage Threshold Over Load Protection
3V < 100
Ω
(100 digits) 600 V DC or Peak AC