Amprobe 37XR-A Operating Manual

Data Sheet

600V

1000V

37XR-A

True RMS Digital Multimeter

True RMS digital multimeter with component and logic test for
troubleshooting electronics at the bench or on the job site.

Inductance to 40 H, frequency to 40 MHz, capacitance ■
to 400 μF, logic to 20 MHz

Input warning tone when test leads are in wrong jack

■

10,000 count, 0.1 % accuracy ■

1000 V/750 V DC/AC True RMS ■

10 Amps AC/DC, fully safety fused ■

Resistance to 40 M ■ W

Continuity beeper

■

No hassle
warranty

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No shipping
charges.

Our commitment to
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and customer service
is demonstrated by
our industry exclusive
“No Hassle” warranty.
In the unlikely event
that an Amprobe Test
Tool requires warranty
service, any of our
local dealers are
authorized to replace
it, on the spot.

(note: $500 MSLP limit)

Min/Max, Average, Relative, Peak, and Data Hold ■

Auto power off to save battery life ■

Separate door for easy battery and fuse access ■

Magne-Grip™ Holster with magnetic hanging strap ■

CAT III 600 V, CAT II 1000 V rated ■

UL ( ■ CULUS) listed

Three-year warranty

■

Amprobe® Test Tools

www.Amprobe.com

37XR-A Digital Multimeter

General Specifications

Autoranging;
Display: 4-3/4 digit LCD, 10,000 counts with 41-segment analog bar graph
Display Update Rate: 2/sec, nominal; Power Battery: 9 V NEDA 1604, JIS 006P, IEC 6F22
Battery Life: 150 hrs typical (alkaline) frequent use of backlight will decrease battery life
Operating Temperature: 0 °C to 45 °C at < 70 % R.H.
Storage Temperature: -20 °C to 60 °C, 0 to 80 % R.H. with battery removed from meter;
Temperature Coefficient: 0.1 x (specified accuracy) per °C ( 0 °C to 18 °C , 28 °C to 45 °C)
Altitude: 2000 m (6562 ft)
Dimensions: 195 x 92 x 60 mm (7.75” x 3.55” x 2.4”)
Weight: 400 gr (1 lb) without holster, including battery

Specifications (23 °C ± 5 °C, <75 % R.H. non-condensing)

Function Range Accuracy

DC Voltage

Ranges 1000 mV, 10 V, 100 V, 1000 V ± (0.1 % rdg + 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 dgt)
1000 uA to 400 mA ranges: ± (0.5 % rdg + 5 dgts)
10 A range: ± (1.5 % rdg + 10 dgt)
Resolution 0.01 μA

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: ± (2.5 % rdg + 10 dgts)
Resolution 0.01 μA
AC coupled True RMS specified from 5 % to 100 % of range

Resistance

Ranges 1000 W, 10 kW, 100 kW, 1000 kW, 10 MW, 40 MW
1000 W to 1000 kW ranges: ± (0.5 % rdg + 8 dgts)
10 MW range: ± (1.0 % rdg + 10 dgts)
40 MW 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 to 40 μF ranges: ± (3.0 % rdg + 5 dgts)
Resolution 0.01 nF

Data Sheet

Amprobe® Test Tools

www.Amprobe.com

Specifications (23 °C ± 5 °C, <75 % R.H. non-condensing), cont.

Function Range Accuracy

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 Hz

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 < 40 W

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
AC Current ± (3.0 % + 200 dgts)
100 μA range: unspecified

Overload Protection

AC/DC Voltage All ranges: 1000 V dc or 750 V ac rms
AC/DC Current μA/mA input: F0.5 A/1000 V fast-blow ceramic (6.3 x 32 mm)
10 A input: F10 A/1000 V fast-blow ceramic (10 x 38 mm)
(10 A for 4 minutes maximum followed by a 12 minute cooling period)

Data Sheet

www.Amprobe.com

37XR-A Digital Multimeter

Included Accessories

Test leads with threaded alligator clips (TL36A), 9 V battery
(installed), Magne-Grip™ Holster with magnetic hanging
strap (H2-XRA), spare fuse, operators manual

Optional Accessories

VC221B Padded Vinyl Carry Case
DL248D Deluxe Test Lead Kit
DC205C Heavy Duty Case
HV231-10A High Voltage Probe
TP254A High Temperature Probe

Data Sheet

Amprobe® Test Tools

website: www.Amprobe.com
email: [e-mail]
Everett, WA 98203
Tel: 877-AMPROBE

Amprobe® Test Tools Europe

In den Engematten 14
79286 Glottertal, Germany
Tel.: [phone] - 0

Amprobe® Test Tools

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9/20 07 2062690 D- US-N Rev C

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