Scope and Multimeter Operations
Technical Specifications (Scope Module)
102
GMM Specifications
9.5.4 Lab Scope
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 signal’s waveform, which
in turn allows you to see the strength and shape of the signal, as well as any noise
that may be occurring in the circuit. The lab scope also samples signals at a high
rate, which allows you to see a higher level of detail in shorter 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
Tests and Capabilities (Quick Reference)
for a list of available testing functions.
Lab Scope Specifications
NOTE
200V to 400V scales are not to be used to measure signals greater than
50VAC (rms) or 75VDC. Do not use the Scope/Meter to measure greater than
50VAC (rms) or 75VDC.
Function
Range
Accuracy/Comments
Signal
Measurement
Ch. 1—yellow jack
Ch. 2—green jack
Ch. 3—blue jack
Ch. 4—red jack
Each channel input is referenced to
common ground input (GND—black jack)
Sample Rate
1.5 MSPS
Continuous sampling,
MSPS = mega samples per second
Bandwidth
DC–3 MHz
3 db point @ 3 MHz
Input Impedance
10 MΩ
@ DC
4 kΩ @ 3 MHz
Channel 1–4
VDC (Full Scale)
75VDC
Do not measure greater than 75VDC
VAC (Full Scale)
50VAC
Do not measure greater than 50VAC (rms)
Ohm Measurement
Diode Test
Continuity Test
Ch. 3—blue jack (-)
Ch. 4—red 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.
Function
Range
Accuracy/Comments
Signal
Measurement
Ch. 1—yellow jack
Ch. 2—green jack
Ch. 3—blue jack
Ch. 4—red jack
Each channel input is referenced to
common ground input (GND—black jack)
Sample Rate
For 50uS sweep
6MSPS
For 100uS sweep
3MSPS
For all other sweeps
1.5 MSPS
Continuous sampling,
(MS/s) = mega samples per second
Bandwidth
DC–3 MHz
3 db point @ 3 MHz
Input Impedance
10 MΩ
@ DC
4 kΩ @ 3 MHz
Channel 1–4
VDC (Full Scale)
100mV–400V
Do not measure greater than 75VDC
VAC (Full Scale)
100mV–400V
Do not measure greater than 50VAC (rms)
Low Amp Probe
20A scale (100mV/
Amp)
40A scale (10mV/Amp)
60A scale (10mV/Amp)
Connect Low amp Probe (+) to Ch. 1
(yellow jack) and (–) to GND input (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.
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