User Manual

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2.5 Logic Probe Connection
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DANGE
R
The logic input and 8826 Unit share a common ground. Therefore, if powe
r
is supplied to the measurement object of the logic probe and to the 882
6
from different sources, an electric shock or damage to the equipment ma
y
result. Even if power is supplied from the same system, if the wiring is suc
h
that a potential difference is present between the grounds, current will flow
through the logic probe so that the measurement object and 8826 could b
e
damaged. We therefore recommend the following connection method t
o
avoid this kind of result.
(1) Before connecting the logic probe to the measurement object, be sur
e
that power is supplied from the same outlet box to the measuremen
t
object and the 8826 using the supplied grounded 2-wire power cord.
(2) Before connecting the logic probe to the measurement object, connec
t
the ground of the measurement object to the 8826 ground terminal. Als
o
in this case, power should be supplied from the same source. Refer t
o
Section 2.2 for grounding terminal details.
Measurement
object
8826
Outlet box
Power Supply
Ground Connection
8826
F
unction Groun
d
T
errminal
GND
In this case too, obtain power from th
e
same supply.
Measurement
object
・The logic input is located on the top side of th
e
unit. Up to eight probes can be connected.
・Since one logic probe can record 4 channels, th
e
combined maximum recording capability for logi
c
waveforms is 32 channels.
・Connect the probe by aligning the groove on th
e
plug with the ridge on the connector.
NOTE
2
.5 Logic Probe Connection
･ If no logic probe is connected, the corresponding logic waveform is displayed
on the screen at high level.
･ Carefully read the instruction manual supplied with the probe.