3-10
IM 701310-01E
Handling Precautions of the Probe Interface Terminals and Probe Power
Terminals
If you are connecting the YOKOGAWA’s FET Probes, Current Probes, Differential
Probes, or Deskew Correction Signal Source to the Probe Power Terminals (Option) on
the rear panel, be sure that the total current of the two Probe Power Terminals and the
four Probe Interface Terminals does not exceed 1.2 A. Otherwise, the DL9000 operation
may become unstable due to the activation of the excessive current protection circuit of
the power supply.
PROBE POWER
( )
12 V DC
CH 1
CH 2
CH 3
CH 4
Probe power supply terminals Probe interface connectors
• When using current probes (701932/701933), the number of probes is limited,
depending on the measured current (the current measured by the current probes).
The characteristics of measured current versus current consumption for active probes
that can be connected to the DL9000 are as follows.
Measured current (A)
Current consumption (mA)
–600
–500
–400
–300
–200
–100
0
100
200
300
400
500
600
–50 –40 –30 –20 –10
0
10
20
30
40
50
Positive power supply, DC input
Positive power supply, AC (50 Hz) input
Negative power supply, DC input
Negative power supply, AC (50 Hz) input
• The current consumption of the FET probe (700939) and differential probe (700924,
700925, 701920, 701921, or 701922) should be calculated as a maximum of 125 mA
for both negative and positive.
• Calculate the power consumption of the Deskew Correction Signal Source (701935)
as 150 mA (positive power supply).
3.4 Connecting the Probe
