Handheld Instruments Basic Service
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DMM800 Series Digital Multimeters
The Tektronix DMM800 Series digital multimeters provide many features.
Table 1 lists the features of each meter for easy comparison.
Figure 1: DMM870 Digital Multimeter
Table 1: DMM800 series digital multimeter features
Feature DMM830 DMM850 DMM870
40,000 display count
Bargraph
C entering and zooming
True RM S or average A C meas urements
Autorange
Measurements
DC/AC voltage
AC + DC voltage
DC/AC current
DMM800 Series Digital Multimeters
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Handheld Instruments Basic Service
Table 1: DMM800 series digital multimeter features (cont.)
Feature DMM870DMM850DMM830
R esistance
F requency
Diodes and capacitors
C ontinuity
Duty factor
Temperature
Decibel
AC volts and amps with Hz display
Measurement hold
P eak hold
Minimum, maximum, and average values
M/M/A time stamp
Delta mode
HI/LO limits
Memory store and recall
Backlight
Automatic fuse verification
Improper input connection warning
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DMM800 Series Specifications
The characteristics listed in this section apply under the following conditions:
The instrument operates in an 18 to 28 C ambient environment at less than
75% relative humidity.
The batteries are adequately charged (the battery indicator does not display).
NOTE
. All specifications are warranted unless marked “typical.” Typical
characteristics are not guaranteed but are provided for the convenience of the
user.
Table 2: General specifications
Characteristic Description
LC D display digits 43/4 or 33/
4
Bargraph segments 40
Display count 40,000 or 4,000
Numeric update rate 1 time/sec (40,000 count)
4 times/sec (4,000 count)
Bargraph 20 times/sec
P olarity display Automatic
O verrange display O L is displayed
Low voltage indicator Battery indicator
Automatic power-off time User selectable (default = 15 minutes)
P ower source One standard 9 V battery, ANSI/NE DA 1604A , IE C 6F 22
Maximum input voltage 1000 V (750 V A C ) C AT II between V and C O M
Maximum floating voltage 1000 V (750 V A C ) C AT II between any terminal and earth ground
Maximum input current 400 mA between A mA and CO M
10 A continuous between A and C O M (20 A for 30 seconds)
Maximum open circuit voltage C urrent inputs: 600 V between A and C O M and between A mA and CO M
O verload protection
A mA connector 1 A (600 V ) fast blow fuse (type BLS or B BS )
Tektronix part number 159-0337-00
A connector 15 A (600 V ) fast blow fuse (type K TK or K L K )
Tektronix part number 159-0287-00
V connector 1100 V
pk
AC + DC
V V
850 V
pk
Hz
mV
C
DMM800 Series Specifications
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Table 3: Measurement characteristics
Characteristic Description
DC voltage
V ranges 4 V, 40 V, 400 V, 1000 V
mV range 400 mV
Accuracy (% + 10 counts)
1
DMM830 DMM850 DMM870
±
0.2%
±
0.1%
±
0.06%
AC voltage
R anges 4 V, 40 V, 400 V, 750 V
Accuracy5 (% + 40 counts)
1
DMM830 DMM850 DMM870
50 to 100 H z
±
1.0%
±
0.8%
±
0.7%
>100 to 1 kH z
2
±
2.5%
±
2.0%
±
1.5%
>1 kH z to 10 kH z
2
– – –
±
3.5%
±
2.5%
>10 kH z to 20 kH z
2
– – – – – –
±
3.5%
Bandwidth
DMM830 DMM850 DMM870
1 kHz 10 kHz 20 kHz
C rest factor
≤
3
Input impedance 10 M paralleled by 100 pF
AC + DC volts S ame as AC (R M S ) + 1.2% + 10 counts
3
dBm/dB dBm reference = 1 mV into 600
dB reference = 1 V
C urrent
AC and DC ranges 4,000 A, 400 mA , 10 A : 20 A maximum for < 30 seconds
DC accuracy (% + 10 counts)
1
DMM830 DMM850 DMM870
±
0.5%
±
0.4%
±
0.3%
AC accuracy (% + 80 counts)
1
±
1.2%
±
0.9%
±
0.9%
Bandwidth (typical)
≤
1 kHz
R esistance
R anges
ranges 400 4 k40 k400 k4 M40 M
LV ranges 4 k40 k400 k4 M40 M
Accuracy
DMM830 DMM850 DMM870
(% + 10 counts)
1
±
0.5%
±
0.4%
±
0.3%
LV (% + 1 count)
2,3
±
1%
±
0.8%
±
0.6%
4 M400 range
±
1%
±
0.8%
±
0.6%
40 M range
3
±
5%
±
5%
±
5%
DMM800 Series Specifications
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Table 3: Measurement characteristics (cont.)
Characteristic Description
C
ompliance voltages (typical) 1 V ( setting)
0.4 V (LV setting)
C ontinuity threshold
3
Beeper sounds when resistance is approximately 75 or less
Diode test
3
Test current (typical) 0.6 mA
Test voltage (typical)
≤
3 V
C apacitance
R anges 4 nF, 40 nF, 400 nF, 4 F, 40 F, 400 F, 4 mF, 40 mF
Accuracy3 (% + 10 count)
4 nF to 4 F
±
1% (delta mode)
40 F to 40 mF
±
3%
F requency
4
R anges 400 H z, 4 kHz, 40 kH z, 400 kH z, 2 MHz
Accuracy6 (% + 10 count)
400 H z to 400 kH z
±
0.01%
2 MHz
±
0.15%
S ensitivity 0.5 V
p-p
Duty factor
Accuracy
±
(0.1% + 0.05% per kHz) for 5 V input
R ange 15 Hz to 10 kH z (10% to 90% duty factor)
Temperature
R ange – 50 to +980 C
Accuracy 2 C
Thermocouple type K
P eak meas urements
3
Accuracy DC volts: ±5% + 40 counts of the peak value of a single 1 ms pulse
1
Divide counts by 10 in 4000 count mode.
2
750 V, 40 M–LV range unspecified.
3
4000 count mode only.
4
Upper display readout is limited to 10 kHz with reduced accuracy.
5
>10% range, 4 V range > 1 V.
6
>5% range.
DMM800 Series Specifications
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Table 4: Physical characteristics
Characteristic Description
Dimensions
Without holster 32 mm × 86 mm × 185 mm (H × W × D)
Weight
With battery 370 g (13 oz.)
With battery and holster 600 g (21.2 oz.)
Table 5: Environmental characteristic
Characteristic Description
Temperature
O perating 0 to +50 C
Nonoperating (storage) – 20 to +60 C
Humidity
O perating <80%
Altitude
O perating 2,222 m (7290 ft.)
Nonoperating 12,300 m (40354 ft.)
Vibration
O perating 2.66 g
R MS
, 5 to 500 Hz, 3 axes (10 minutes each)
Nonoperating 3.48 g
R MS
, 5 to 500 Hz, 3 axes (10 minutes each)
Table 6: Certifications and compliance
Characteristic Description
EC Declaration of Conformity Meets the intent of Directive 89/336/E E C for E lectromagnetic Compatibility and Low
Voltage D irective 73/23/E C C for P roduct Safety. Compliance was demonstrated to the
following specifications as listed in the official J ournal of the E uropean C ommunities:
E N 55011 C lass A : R adiated and C onducted E missions
E N 50082–1 Immunity: IE C 801– 2 E lectrostatic Discharge
IE C 801– 3 R F R adiated
E N 61010-1: E lectrical equipment safety requirements for
measurement,control, and laboratory use
C ertifications C ertified U L3111-1 and C AN/CS A C 22.2 No. 1010.1-92
DMM800 Series Specifications
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Table 6: Certifications and compliance (cont.)
Characteristic Description
O vervoltage category C AT III: Distribution level mains, fixed installation
C AT II: Local level mains , appliances , portable equipment
C AT I: S ignal level, special equipment or parts of equipment, telecommunication,
electronics
P ollution Degree 2 Do not operate in environments where conductive pollutants may be present.
DMM800 Series Specifications
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Handheld Instruments Basic Service
Handheld Instruments Basic Service
9
DMM800 Series Performance Verification
This section contains procedures to verify that the DMM830, DMM850, and
DMM870 Digital Multimeters perform as warranted. If an instrument fails any
of these checks, it needs adjustment and or repair.
The performance verification procedures provide a valid confirmation of
instrument electrical characteristics and function under the following conditions:
The multimeter operates in an 18 to 28
C (64 to 82 F) ambient
environment with a relative humidity of less than 75%.
The multimeter stabilizes in the stated ambient temperature for one hour.
The multimeter warms up for five minutes.
For AC measurements, allow the multimeter to settle to its final value before
taking the measurement.
The multimeter remains fully assembled and in the holster.
The DMM800 Series performance verification consists of the checks listed in
Table 7.
Table 7: Performance verification checks
AC Volts C heck
DC Volts C heck
DC Millivolts C heck
AC +D C Volts C heck
F requency C heck
Duty Factor Check (DM M 850 and DMM870)
C heck
Low Voltage C heck
C ontinuity Check
Diode C heck
C apacitance Check
Temperature C heck (DM M 850 and DMM870)
Volts P eak Hold C heck (DM M 870)
DC Milliampere Check
AC Milliampere C heck
DC Ampere C heck
AC Ampere C heck
The performance verification procedure should be performed annually or after
every 2000 hours of operation if used infrequently.
DMM800 Series Performance Verification
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Handheld Instruments Basic Service
Test Equipment
The performance verification procedures use external traceable test equipment to
directly check warranted characteristics.
Alternative test equipment must meet or exceed the intended minimum
requirements specified in Table 8. If you substitute equipment, you may need to
modify the procedures.
NOTE
. Before beginning the performance verification procedures, warm up the
test equipment according to the manufacturer’s recommendations.
Table 8: Test equipment
Description Minimum requirements Example product
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Universal Calibration
S ystem
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R esolution & accuracy 4 times
greater than the multimeter
display reading.
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Wavetek 9100 with 9105 lead
set.
AC and DC volts measurement
1
AC and DC current measurement
R esistance measurement
1
C apacitance meas urement
S inewave generation
S quarewave generation
Thermocouple adapter K Type Tektronix AT K 01
C apacitance Standard O ptional
1
Choose 4-wire measurement setup if available.
DMM800 Series Performance Verification
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Set Up
To prepare for the performance verification checks, do the following steps.
1. Allow the multimeter to stabilize at the ambient temperature for one hour
before testing.
2. Turn the multimeter on by rotating the function switch to any position other
than OFF.
NOTE
. You need to keep the multimeter powered on throughout the warm-up
period and throughout the entire verification procedure.
Set the auto power off time to a large value or disable the auto power off by
pushing the Blue button when turning the dial from the OFF position.
3. Warm up the multimeter for five minutes.
4. Set the Digits to the 40,000 counts display.
5. Pages 19 through 33 contain test records for the DMM800 series multime-
ters. Each model has its own test record. Photocopy the test record pages for
your model to record your test results.
NOTE
. If stability of the display reading causes questionable accuracy of a test,
set the multimeter to Average mode.
DMM800 Series Performance Verification
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Handheld Instruments Basic Service
Verification Procedure
Implement the following checks to verify the performance of your DMM800
Series multimeter.
WARNING.
To avoid electric shock, avoid touching exposed connections.
Perform the following steps to verify the AC voltage measurement accuracy.
1. Set the multimeter dial to V
.
2. Connect the calibrator outputs to the multimeter C V
and COM input
connectors.
3. Set the calibrator to each of the values in the AC volts test record and verify
that the multimeter reads within the specified Display minimum and
maximum limits.
4. Turn the calibrator output off.
5. Disconnect the calibrator from the multimeter.
Perform the following steps to verify the DC volts measurement accuracy.
1. Set the multimeter dial to V
.
2. Connect the calibrator outputs to the multimeter C V
and COM input
connectors.
3. Set the calibrator to each of the values in the DC volts test record and verify
that the multimeter reads within the specified Display minimum and
maximum limits.
4. Turn the calibrator output off.
5. Disconnect the calibrator from the multimeter.
Perform the following steps to verify the DC millivolt measurement accuracy.
1. Set the multimeter dial to mV
.
2. Connect the calibrator outputs to the multimeter C V
and COM input
connectors.
3. Set the calibrator to each of the values in the DC millivolt test record and
verify that the multimeter reads within the specified Display minimum and
maximum limits.
AC Volts Check
DC Volts Check
DC Millivolts Check
DMM800 Series Performance Verification
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4. Turn the calibrator output off.
5. Disconnect the calibrator from the multimeter.
Perform the following steps to verify the AC+DC voltage measurement
accuracy.
1. Set the multimeter dial to AC+DC.
2. Connect the calibrator outputs to the multimeter C V
and COM input
connectors.
3. Set the calibrator to each of the values in the AC+DC volts test record and
verify that the multimeter reads within the specified Display minimum and
maximum limits.
4. Turn the calibrator output off.
5. Disconnect the calibrator from the multimeter.
Perform the following steps to verify the frequency measurement accuracy.
1. Set the multimeter dial to Hz.
2. Connect the calibrator outputs to the multimeter C V
and COM input
connectors.
3. Set the calibrator to each of the values in the Frequency test record and
verify that the multimeter reads within the specified Display minimum and
maximum limits.
4. Turn the calibrator output off.
5. Disconnect the calibrator from the multimeter.
Perform the following steps to verify the duty factor measurement accuracy.
1. Set the multimeter dial to Hz.
2. Push the BLUE button to select duty factor (% DF).
3. Connect the calibrator outputs to the multimeter C V
and COM input
connectors.
4. Set the calibrator to each of the values in the Duty factor test record and
verify that the multimeter reads within the specified Display minimum and
maximum limits.
AC+DC Volts Check
Frequency Check
Duty Factor Check
(DMM850 and DMM870)
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