270 TPI (Test Products Int), 270 Datasheet - Page 19

• Manufacturer Part Number: 270
• Description: CLAMP-ON TESTER W/DMM
• Manufacturer: TPI (Test Products Int)
• Series: 270r
• Type: Digital (DMM)r

Specifications of 270

• Includes: Battery, Case, Temperature Probe, Test Leads
• Style: Clamp
• Display Digits: 3.75
• Display Type: LCD, Bar Graph
• Display Count: 4000
• Function: Voltage, Current, Resistance, Capacitance, Temperature, Frequency
• Functions, Extra: Continuity, Diode Test
• Features: Auto Off, Hold, Min/Max, Sleep
• Ranging: Auto/Manual
• Response: Average
• Lead Free Status / RoHS Status: Vendor undefined / Vendor undefined
• Other names: 290-1421; TPI 270; TPI270

Measuring Diodes
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/
4. Set the rotary switch to the
5. Connect the black test lead to the banded end of the diode
6. For a good diode, the reading on the display should be
7. Reverse the leads on the diode.
8. For a good diode, the reading on the display should be OL
Optional Modes
•
energized. For accurate tests, remove the diode completely
from the circuit prior to measuring it. Make sure the tempera-
ture probe is NOT plugged in during this test.
Instrument set-up:
FUNC.
(cathode) and the red test lead to the non-banded end of
the diode (anode).
between 0.5V and 0.8V. The reading will be lower for a
germanium diode.
(overload).
D-H:
WARNING!
Do not attempt to make diode measurements with the circuit
Freezes the reading on the LCD.
(See Other Features Section)
BLACK
TEST LEAD
COM
W
input jack.
position.
RED
TEST LEAD
V/W/mA
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