Amprobe LCR55A Inductance-Capacitance-Resistance-Meter - Manual (Page 8)

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1. Set the Function/Range switch to the PNP(hFE) or NPN(hFE) position,
according to the type of transistor to be measured.
2. Plug the emitter, base and collector leads of the transistor into the correct
holes of test socket.
3. Read the hFE beta, (DC current gain) in the display.
Note: To measure the collector-emitter current, set the function/range switch to
the corresponding PNP(Icec µA) or NPN(Icec µA) position.
MAX Function
Push the MAX button to keep only the highest reading on the display. The
display is updated each time a higher value is encountered. Push MAX again to
release the display and to display current values.
Hold Function
Press the HOLD button to maintain a reading on the display. The reading is
maintained even when the probe tips are removed from the meter. Pushing the
HOLD button again releases the display.
Safety Test Leads
The test leads included with your meter have shrouded banana plugs to
eliminate the possibility of shock if the plugs accidentally pull out of the meter
while making a measurement. Always inspect the test leads for damage before
making any measurements.
Specifications
General Specifications
Display: 3 1/2 digit LCD, 1999 counts, 0.7” (17.8mm) high numerals, unit
annunciators and function symbols
Polarity Indication: Automatic, positive implied, negative indicated
Zero Adjustment: Automatic
Overrange Indication: “OL”
Low Battery Indication: � is displayed when the battery voltage drops below
accurate operating level. Change battery immediately.
Display Update Rate: 2.5 per second, nominal
Operating Temperature: 0°C to 50°C, 0 to 70% Relative Humidity
Storage Temperature: -20°C to 60°C, 0 to 80% RH with battery removed
Temperature coefficient: 0.1 x (spec. accur.) per °C (0-18°C, 28-50°C)
Power: Standard 9-volt transistor battery, NEDA 1604, JIS 006P, IEC 6F22
Auto Power Off: 60 minutes after no function or range change
Battery Life (Typical): 30 hours alkaline (changes with function and application)
Dimensions (H x W x D): 18.3 x 7.9 x 3.8 cm, (7.2 x 3.1 x 1.5 inches)
Weight (including battery): 311 grams (11 ounces)
Accessories: Test leads, 0.1A/250V spare fuse, battery, one pair of alligator clips
and Operator’s Manual.