Features
- True RMS
- DC Voltage to 1000 V
- AC Voltage to 750 V
- DC and AC Current to 10 A
- Resistance to 40 MΩ
- Capacitance, Inductance, Frequency, Duty Cycle, dBm
- Continuity: Audible Indication < 40 W
- Diode Test
- Logic Test: TTL, CMOS
- Overload protection
- 4-3/4 digit; 10,000 count LCD
- 41-segment analog bar graph
- CAT III 600 V, CAT II 1000 V safety rating
- UL listed
The Amprobe 37XR-A digital multimeter is a true RMS digital multimeter with a component and a logic test for
troubleshooting electronic instrumentation in the lab or on the jobsite. The Amprobe 37XR-A can measure inductance to
40 Hz, frequency to 40 MHz, capacitance to 400 µF and logic to 20 MHz. The meter has a 10,000 count display with 0.1%
accuracy at selected ranges.
Amprobe 37XR-A digital multimeters have many great features including an input warning tone when test leads are
put in the wrong jacks; continuity beeper; Min/Max, Average, Relative, Peak and Data Hold; Auto power-off and a separate
door for battery and fuse access. The Amprobe 37XR-A has a CAT III 600 V, CAT II 1000 V safety rating and is UL listed.
The Amprobe 37XR-A digital multimeter ships complete with:
Test leads with threaded alligator clips (TL36A)
9 V battery
Magne-Grip holster w/magnetic hanging strap (H2-XRA)
Spare fuse
Manual
Amprobe 37XR-A Digital Multimeter Specifications
Function
Range
Accuracy
DC Voltage
Ranges
1000 mV, 10 V, 100 V, 1000 V
±(0.1 % rg + 5 dgt)
Resolution
100 µV
AC Voltage (45 Hz to 2 kHz) True RMS
Ranges
1000 mV, 10 V, 100 V, 750 V
750 V range: 45 to 1 kHz:
±(2.0 % rdg + 10 dgts)
All other ranges: 45 to 500 Hz:
±(1.2 % rdg + 10 dgts)
All other ranges: 500 to 2 kHz:
±(2.0 % rdg + 10 dgts)
Resolution
100 µV
AC coupled True RMS specified from 5 % to 100 % of range
DC Current
Ranges
100 µA, 1000 µA, 10 mA, 100 mA, 400 mA, 10 A
100 µA range:
±(0.5 % rdg + 10 dgts)
1000 uA to 400 mA ranges:
±(0.5 % rdg + 5 dgts)
10 A range:
±(1.5 % rdg + 10 dgts)
Resolution
100 µV
AC Current (45 Hz to 1 kHz) True RMS
Ranges
100 µA, 1000 µA, 10 mA, 100 mA, 400 mA, 10 A
100 µA to 100 mA ranges:
±(1.5 % rdg + 10 dgts)
400 mA range:
±(2.0 % rdg + 10 dgts)
10 A range:
±(1.5 % rdg + 10 dgts)
Resolution
0.01 µA
AC coupled True RMS specified from 5 % to 100 % of range
Resistance
Ranges
1000 Ω, 10 kΩ, 100 kΩ, 1000 kΩ, 10 MΩ, 40 MΩ
1000 Ω to 1000 kΩ ranges:
±(0.5 % rdg + 8 dgts)
10 MΩ range:
±(1.0 % rdg + 10 dgts)
40 MΩ range:
±(2.0 % rdg + 10 dgts)
Capacitance
Ranges
40 nF, 400 nF, 4 µF 40 µF, 400 µF
40 nF, 400 µF ranges:
±(3.0 % rdg + 10 dgts)
400 nF, 40 µF ranges:
±(3.0 % rdg + 5 dgts)
Resolution
0.01 nF
Inductance
Ranges
4 mH, 40 mH, 400 mH, 4 H, 40 H
For values of Q 2 7:
±(5.0 % rdg + 30 dgts)
Resolution
1 µH
Frequency
Ranges
100 Hz, 1000 Hz, 10 kHz, 100 kHz, 1000 kHz, 10 MHz
±(0.1 % rdg + 5 dgts)
Resolution
0.01 Ha
Duty Cycle
Ranges
0 to 90 %
Accuracy
5V logic:
±(2.0 % rdg + 20 dgts)
Resolution
0.01 %
Frequency Range
0 % to 10 %: 40 Hz to 990 kHz
10 % to 90 %: 40 Hz to 20 kHz
Logic Test
Logic Type
TTL, CMOS
Thresholds
Logic 1 (Hi): TTL 2.8 V ±0.8 V, CMOS 4 V ±1 V
Logic 0 (Lo): TTL 0.8 V ±0.5 V, CMOS 2 V ±0.5 V
Frequency Response
20 MHz
dBm
Ranges
-13 dBm to +50 dBm
45 Hz to 5 kHz:
±(0.7 dB + 8 dgts)
5 kHz to 10 kHz
±(2.5 dB + 8 dgts)
Resolution
0.01 dBm
Continuity
Audible Indication
less than 40 Ω
Diode Test
Test Current
1.0 mA (approximate)
Open Circuit Volts
3.0 V dc typical
Peak
AC Volts Accuracy
100 V, 750 V ranges:
± (3.0 % + 200 dgts)
1000 mV, 10 V ranges:
unspecified
Overload Protection
AC/DC Voltage
All ranges: 1000 V DC or 750 V AC RMS
AC/DC Current
µA/mA input: F0.5A/1000 V fast-blow ceramic (6.2 x 32 mm)
10 A for 4 min. max. followed by 12 min. cooling period
