YOKOGAWA DL750 User Manual

3-19
IM 701210-05E
Making Preparations for Measurements
3
Precautions to Be Taken When Using Current Probes
When connecting the current probe to the probe power supply terminal on the right side
panel, make sure that the current does not exceed the range shown below. Otherwise,
the DL750/DL750P operation may become unstable due to the activation of the
excessive current protection circuit of the power supply.
A
(Total current consumption of A through D) ≤ 800 mA
When each terminal is assigned names A through D
PROBE
POWER
( 12V)
B
C
D
Specifications of the Probe Power Supply Terminals (Optional)
Item
Number of probes that can be used 4
Probes that can be used Current probe (700937, 701930, 701931, and 701933)
Number of current probes that can be used 700937 (15 A): Up to 4
701930 (150 A): Up to 2
701931 (500 A): 1
701933 (30 A): Up to 2
Supply voltage ±12 V 2 outputs (up to a total of 800 mA)
When using the current probe, the number of probes that can be used is limited by the
current generated by the device under measurement (current measured by the current
probe). The characteristics of the measured current versus the current consumption of
an active probe that can be connected to the DL750/DL750P are shown below.
-250
-200
-150
-100
-50
-15 -10 -5 0 5 10 15
0
50
100
150
200
250
Current probe (700937)
Current consumption [mA]
Measured current [A]
Positive
current
Negative
current
-400
-300
-200
-100
-150 -100 -50 0 50 100 150
0
100
200
300
400
Current probe (701930)
Current consumption [mA]
Measured current [A]
Positive
current
Negative
current
AC (f=50 Hz)
DC
AC (f=50 Hz)
DC
-500
-400
-300
-200
-100
-500 -400 -300 0 100 200 500
0
100
200
300
400
500
Current consumption [mA]
Measured current [A]
Positive
current
Negative
current
-200 -100 300 400
Current probe (701931)
AC (f=50 Hz)
DC
Positive
current
Negative
current
Current probe (701933)
Current consumption [mA]
Measured current [A]
-50 -40 -30 -20 -10 0 10 20 30 40 50
600
500
400
300
200
100
0
-100
-200
-300
-400
-500
-600
AC (f=50 Hz)
DC
For details on the usage conditions of each probe, see "Relationship between the current
being measured and probe's current consumption" on the following Web page.
http://www.yokogawa.com/tm/probe/
3.6 Connecting Probes

YOKOGAWA DL750 Specifications

General

Brand	YOKOGAWA
Model	DL750
Category	Measuring Instruments
Language	English