Universal Enterprise DM397 User Manual
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N D U S T R I A L
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O M M E R C I A L
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R O U B L E S H O O T I N G
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N E O F T H E M O S T A D V A N C E D D I A G N O S T I C M U L T I M E T E R S E V E R M A D E F O R
HVAC/R,
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L E C T R I C A L A N DIN D U S T R I A L P R O C E S S D I A G N O S T I C S
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DM397
True RMS Digital Multimeter
True RMS
• The standard of industrial
maintenance professionals
Features Include:
• 1000 Volt CAT-III rated for your safety
• Data Logging kit and software included
• High-resolution 5-digit backlit display
• Test lead and fuse error- a l e r t s
• MIN/MAX/AVG recording
• Stores up to 20 readings
• Precision resistance scale (1/1000
t h
o h m )
• Temperature (includes probe)
• Capacitance for run & start caps
• Frequency for VFD/VSD and Gen testing
• Duty Cycle and Pulse Width measurement
• 1 Millisecond Peak Capture
• DbM and Db-V for power-out testing
• Easy access fuses and battery
DM397 • True RMS Digital Multimeter
Accuracy is given as ±([% of reading] + number of digits) at 64˚ to 78˚F with
RH% up to 80%, for a period of one year after calibration. True RMS
responding accuracies are specified from 5% ~ 100% of range or otherwise
specified: Crest Factor <3:1 at full scale and <6:1 at half scale.
DC Voltage Measurement
NMRR : >60dB @ 50/60 Hz
CMRR : >120dB DC, 50/60 Hz, Rs = 1kΩ
Input Impedance : 10MΩ, 30 pF nominal
( 5 0 MΩ, 100 pF nominal for 50m V & 500 mV ra n g e s )
AC Voltage Measurement
CMRR : >60dB DC to 60 Hz, Rs = 1kΩ
Input Impedance : 10MΩ, 30 pF nominal
( 5 0 MΩ, 100 pF nominal for 50m V & 500 mV ra n g e s )
DC Current Measurement
AC Current Measurement
Range Resolution Accuracy
50 mV 1 µV .05% +10 dgts
500 mV 10 µV
5 V 100 µV .05% +2 dgts
50 V 1 mV
500 V 10 mV
1000 V 100 V 0.1% +2 dgts
Specifications
Range Resolution Accuracy
40Hz - 1kHz 4kHz - 5kHz 5kHz - 20 z 20kHz - 50 k H z
500 mV 10 µV 0 . 3 % + 10 1. 0 % + 10 2 . 0 % + 2 0 U n s p e c i f i e d
5 V 100 µV
50 V 1 mV 0 . 3 % + 1 0 0 . 5 % + 10 0 . 5 % + 10 0 . 8 % + 20
500 V 10 mV
1000 V 100 mV 0 . 4 % + 10 0 . 5 % + 2 0 U n s p e c i f i e d U n s p e c i f i e d
Range Resolution Accuracy
500 µA 10 nA
5 mA 100 nA 0.1% + 5
50 mA 1 µA
500 mA 10 µA
5 A 100 µA 0.3% + 10
10 A 1 mA 0.3% + 20
Range Resolution Accuracy
40Hz - 1kHz 1kHz - 10kHz
500 µA 10 nA
5 mA 100 nA 0.3% + 5 0.8% + 10
50 mA 1 µA
500 mA 10 µA
5 A 100 µA 0.4% + 10 Unspecified
10 A 1 mA 0.4% + 20
(AC+DC) Voltages and (AC+DC) Current
Resistance
Open Circuit Voltage: <1.3 V DC
*1Using relative (REL∆) mode
Conductance (5,000 counts only)
Continuity
Diode Test
Function Range Resolution Accuracy
40Hz - 1kHz 1kHz - 10kHz
DC mV 500 mV 100 µV 0.5% + 5 0.8% + 5
5 V 1 mV
DC V 50 V 10 mV 0.5% + 3 0.8% + 3
500 V 100 mA
1000 V 1 V 0.8% + 5 0.8% + 5
DC µA 500 µA 100 nA
5 mA 1 µA 0.5% + 3 1.0% + 5
DC mA 50 mA 10 µA
500 mA 100 µA
DC A 5 A 1 mA 0.8% + 10 Unspecified
10 A 10 mA
Range Resolution Accuracy
50 Ω 0.001 Ω 0.5% + 20 *
1
500 Ω 0.01 Ω 0.1% + 5 *
1
5 kΩ 0.1 Ω
50 kΩ 1 Ω 0.1% + 2
500 kΩ 10 Ω
5 MΩ 100 Ω 0.3% + 5
50 MΩ 1 kΩ 0.5% + 20
Range Resolution Accuracy
50 nS 0.01 nS 0.1% + 10
Audible threshold: The beeper sounds if the measured resistance is
lower than 10 Ω,and turns off when greater than
about 70 Ω.
Response time: < 1 m sec.
Range Accuracy Test Current (typical) Open Circuit Voltage
4 V 2% + 1 1 mA <3.0 V DC
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