Introduction

1. Select the Scope Multimeter icon from the home screen.
2. Select either Lab Scope, Graphing Multimeter or Digital Multimeter from the menu.

The following chart identifies and describes available tests by function.

Not all the tests listed are described in this manual. This list is intended as reference only.

DMM

GMM

Lab
Scope

Test

Function

 

 

a

Two Channel Lab Scope

Displays two Lab Scope channels automatically.

 

a

 

Dual Graphing Meter

Displays two Graphing Multimeter channels automatically.

 

 

a

Ignition Probe

Measures secondary Ignition voltage 2 to 50kV. Displays secondary ignition (kV) waveforms.

a

a

a

Volts DC

Measures direct current voltage. DC voltage is measured through the two test leads connected to a DC circuit.

a

a

 

Volts DC - Average

Measures DC voltage using a filter to determine the average voltage over a period in time. DC voltage is measured through the two test leads connected to a DC circuit.

a

a

 

Volts AC RMS

Measures the effective AC voltage, not the peak voltage which results in measurements with higher accuracy. The AC RMS (root mean square) voltage value can be defined as the equivalent DC voltage of the AC voltage measured. RMS values are commonly used in AC electrical measurement, as they are more representative of DC measurements.

a

a

 

Ohms

Measures electrical resistance (opposition to current) 0 to 4 M Ohms. Scope supplied DC current is passed through the circuit to measure the resistance between the two connected test leads.

a

 

 

Diode/Continuity

Measures voltage drop across a diode and continuity through a diode. Scope supplied DC current is passed through the diode to measure the voltage drop between the two connected test leads. Typical setup for positive to negative current flow - positive lead (anode +/side) and negative (cathode -/side).

 

a

 

Frequency

Measures the number of times a signal repeats itself per second. Used to measure frequency of signals such as CKP, CMP and wheel speed sensors.

 

a

 

Pulse Width

Measures the on-time of various components
(e.g. components that cycle on and off like the EGR, or canister purge).

 

a

 

Injector Pulse Width

Measures fuel injector on-time when checking for variances when engine load is changed and/or physical problems with the injector.

 

a

 

Duty Cycle

Measures the ratio of the pulse width to the complete cycle width, the on-time of components that cycle on and off like EGR, or canister purge from 0–100%.

a

a

a

Low Amps (20)

Used to measure amperage of typical devices (e.g. ignition coils, injectors, fuel pumps) that may draw up to 20A peak (startup) when initially started. Also used to measure parasitic draw.

a

a

a

Low Amps (40)

Used to measure amperage of typical motors and devices that may draw up to 40A peak (startup) when initially started.

a

a

a

Low Amps (60)

Used to measure amperage of larger motors and devices that may draw up to 60A peak (startup) when initially started.

 

a

 

MC Dwell (60)

Measures carburetor Mixture Control Solenoids (0–60°). The duty cycle of the solenoid is expressed in the dwell angle of a 6 cylinder engine: 100% = 60 deg.

 

a

 

MC Dwell (90)

Measures fuel system Mixture Control Solenoids (0–90°). The duty cycle of the solenoid is expressed in the dwell angle of a 4 cylinder engine: 100% = 90 deg.

 

a

a

100 PSI Vacuum

Used to measure vacuum up to 20 in.Hg,
using the 0–100 psi transducer.

 

a

a

100 PSI Pressure

Used to measure pressures for typical systems such as, fuel, oil, EVAP, hydraulic/transmission fluid etc. up to 100 psi, using the 0–100 psi transducer.

 

a

a

500 PSI Pressure

Used to measure pressures for typical systems such as, hydraulic/transmission fluid pressure, cylinder compression, and AC high side up to 500 psi, using the 0–500 psi transducer.

 

a

a

5000 PSI Pressure

Used to measure pressures for typical systems such as, ABS, power steering, and heavy-duty hydraulic system fluid up to 5000 psi, using the 0–5000 psi transducer.

 

a

a

MT5030 Vacuum

Used to measure vacuum up to 29 in.Hg,
using the MT5030 pressure transducer adapter.

 

a

a

MT5030 Pressure

Used to measure fluid and gas pressures up to 500 psi, using the MT5030 pressure transducer adapter.

 

a

a

EEDM506D Temperature

Used to measure temperatures from -50° to 1800° F
(-45 to 982° C), using the EEDM506D pressure transducer adapter.

Similar to the GMM, the lab scope (oscilloscope) plots a visual image line of a signal’s measurements over time on a two-dimensional grid. The visual line that is displayed is commonly called a trace, and the graphical form created by a signal is called a waveform.

Unlike the DMM, the lab scope allows you to visually see a signals waveform, which in turn allows you to see the strength and shape of the signal, as well as any noise that may be occurring on the circuit. The lab scope also samples signals at a high rate, which allows you to see a higher level of detail in short samples of the signal, especially in signals that change rapidly. In addition, the lab scope also provides more control over the acquisition of the signal and in how it is displayed, through the use of triggers and channel controls. All of these features allow you to analyze signals in great detail when performing diagnostics.

To use the lab scope, select the Scope Multimeter icon from the home screen then select Lab Scope from the menu.

Specifications

Function

Range

Accuracy/Comments

Signal Measurement

Ch. 1— (yellow jack)
Ch. 2— (green jack)

Each channel input is referenced to common ground (GND— black jack).

Sample Rate

For 50µS sweep 6 (MS/s)
For 100µS sweep 3 (MS/s)
For all other sweeps 1.5 (MS/s)

Continuous sampling,
(MS/s) = mega samples per second

Band Width

3 MHz

3 db point @ 3 MHz

Input Impedance

10 MΩ @ DC
4 kΩ @ 3 MHz

Channel 1 and 2

VDC (Full Scale)

100mV–400V

Do not measure greater than 75VDC.

VAC (Full Scale)

100mV–400V

Do not measure greater than 50 VAC (rms).

Low Amp Probe

20A scale (100mV/Amp)
40A scale (10mV/Amp)
60A scale (10mV/Amp)

Connect the positive (+) Amp Probe lead to the yellow jack on the diagnostic tool for values on Ch.1, or to the green jack for values on Ch. 2. Connect the negative (–) lead to GND (black jack)1.

1. Do not use the Low Amp Probe to measure current on conductors at a potential greater than 46VAC peak or 70VDC.

Lab Scope Specifications By Sweep Rate

Sweep

Channels

Data Points
Per Screen

Buffer
Storage/Ch

Max #
Screens

Total
Time 1

Sample
Rate 2

Peak
Detect 3

Total time it takes
to sweep across
1 screen.

 

Sample points
taken per screen.

Bit Words (MB)

Number of
screens to fill buffer.

Total time it
takes to fill the buffer.

Samples taken
per second.

 

50 µs

Ch 1 only

300

2,097,152 (4.1943)

6990

349.5 ms

6.0 MHz

N

100 µs

Ch 1,2 only

300

1,048,576 (2.0972)

3495

349.5 ms

3.0 MHz

N

200 µs

Ch 1,2 only

300

1,048,576 (2.0972)

3495

699 ms

1.5 MHz

N

500 µs

Ch 1,2 only

500

1,048,576 (2.0972)

2097

1.05 S

1.0 MHz

N

1 ms

Ch 1,2 only

500

1,048,576 (2.0972)

2097

2.10 S

500 KHz

Y

2 ms

Ch 1,2 only

500

1,048,576 (2.0972)

2097

4.19 S

250 KHZ

Y

5 ms

Ch 1,2 only

500

1,048,576 (2.0972)

2097

10.5 S

100 KHz

Y

10 ms

Ch 1,2 only

500

1,048,576 (2.0972)

2097

21.0 S

50 KHz

Y

20 ms

Ch 1,2 only

500

1,048,576 (2.0972)

2097

41.9 S

25 KHz

Y

50 ms

Ch 1,2 only

500

1,048,576 (2.0972)

2097

1.7 M

10 KHz

Y

100 ms

Ch 1,2 only

500

1,048,576 (2.0972)

2097

3.5 M

5 KHz

Y

200 ms

Ch 1,2 only

500

1,048,576 (2.0972)

2097

6.99 M

2.5 KHz

Y

500 ms

Ch 1,2 only

500

1,048,576 (2.0972)

2097

17.5 M

1.0 KHz

Y

1 s

Ch 1,2 only

500

1,048,576 (2.0972)

2097

35.0 M

500 Hz

Y

2 s

Ch 1,2 only

500

1,048,576 (2.0972)

2097

69.9 M

250 Hz

Y

5 s

Ch 1,2 only

500

1,048,576 (2.0972)

2097

174.8 M

100 Hz

Y

10 s

Ch 1,2 only

500

1,048,576 (2.0972)

2097

349.5 M

50 Hz

Y

20 s

Ch 1,2 only

500

1,048,576 (2.0972)

2097

699.0 M

25 Hz

Y

1 - Total time is equal to the sweep times the number of screens.

2 - Actual sample rate for sweeps 50-200 μs. Effective sample rate for sweeps 500 μs and longer. The effective sample rate is based on the number of sample points stored to the data buffer memory over the selected time sweep. On all sweeps 500 μs and longer, the ADC samples at 1.5 MHz per channel regardless of sweep. The number of sample points is greater than the number of points needed to complete a screen. Only enough points to complete a screen are selected to be stored to the data buffer. This results in the effective sample rate being lower than the actual sample rate of 1.5MHz.

3 - When Peak Detect is on, all samples are evaluated. The points stored to the buffer are intelligently selected to capture fast events that might be missed at slower effective sample rates. Peak Detect will capture fast changes at an effective sample rate of 1.5MHz.

The digital multimeter gives you the ability to quickly make precise common electrical measurements (e.g. DC and AC voltage, resistance and amperage) on circuits and components to verify operation. The meter displays measurements in a digital numerical format, and is typically used for measuring signals that are not rapidly changing.

The DMM is ideal for performing basic tests on most standard automotive circuits, and displays the results in a large easy to see format.

To use the DMM, select the Scope Multimeter icon from the home screen then select Digital Multimeter from the menu.

Specifications

Function

Range

Accuracy/Comments

Signal Measurement

Ch. 1— (yellow jack)

Input is referenced to common ground (GND— (black jack)

VDC (Full Scale)

75VDC

Do not measure greater than 75VDC

VAC (Full Scale)

50VAC

Do not measure greater than 50VAC (rms)

Signal Measurement Input Impedance

10 MΩ

-

Ohm Measurement

Diode Test

Continuity Test

Ch. 1— (yellow jack (–))

Ch. 2— (green jack (+))

-

Ohms

40 Ω—4 MΩ

Fixed scales or auto ranging

Glitch Capture

Approximately 50 µS

-

Diode test

2V scale

-

Unlike the DMM, the graphing multimeter provides two channels for testing and plots a visual graphing line of the signal instead of displaying digital values. The GMM displays a signal’s measurements over time on a two-dimensional grid. This plotted graph is basically a graphical history (histogram) of the signal’s measurements over time.

The GMM uses a higher sample rate (than a DMM) to calculate signal measurements. This characteristic along with the visual graph, make the GMM ideal for finding intermittent dropouts or glitches that may not be obvious when viewing a digital value. A key advantage of the GMM is being able to capture a signal over a long time interval and then review it’s graphical history, to visually see if and when dropouts have occurred.

In addition, the GMM uses a combination of filter and peak detect modes to provide a good balance between detecting fast glitches and preventing unwanted noise from displaying.

Unlike the lab scope, the sweep scales used with typical GMM tests are of longer time intervals, and may range from seconds to minutes, compared to the lab scope sweep scales that use relatively short time intervals (e.g. milli and micro seconds). This allows you to monitor a signal over a longer period of time when looking for erratic glitches or dropouts.

To use the GMM, select the Scope Multimeter icon from the home screen then select Graphing Multimeter from the menu.

Specifications

Function

Range

Accuracy/Comments

Signal Measurement

Ch. 1— (yellow jack)
Ch. 2— (green jack)

Each channel input is referenced to common ground (GND— black jack)

Sample Rate

1.5 MSPS

Continuous sampling,
MSPS = mega samples per second

Band Width

3 MHz

3 db point @ 3 MHz

Input Impedance

10 MΩ @ DC
4 kΩ @ 3 MHz

Channel 1 and 2

VDC (Full Scale)

75VDC

Do not measure greater than 75VDC

VAC (Full Scale)

50VAC

Do not measure greater than 50 VAC (rms)

Ohm Measurement

Diode Test

Continuity Test

Ch. 1— (yellow jack (–))

Ch. 2— (green jack (+))

-

Ohms

40 Ω—4 MΩ

Fixed scales

Low Amp Probe

20A scale (100mV/Amp)
40A scale (10mV/Amp)
60A scale (10mV/Amp)

Connect the positive (+) Amp Probe lead to the yellow jack on the diagnostic tool for values on Ch.1, or to the green jack for values on Ch. 2. Connect the negative (–) lead to GND (black jack)1.

1. Do not use the Low Amp Probe to measure current on conductors at a potential greater than 46VAC peak or 70VDC.