Hioki LR8431, Instruction Manual

Page: 41 / 204

2.3 Connecting Measurement Cables to the Memory HiLogger
33
3
2
Chapter 2 M
eas
ureme
n
t Prep
a
rat
ions
Connecting to the Pulse Input Connector
Connect the optional 9461 connection cable to the pulse input connector.
To avoid electric shock and short circuit accidents or damage
to the instrument, pay attention to the following:
• The ground terminal for the
optional 9641 Connection
Cable is not isolated from
the Memory HiLogger's
ground (chassis ground).
Therefore, if the measure-
ment object connects to
AC, it should have a grounded, polarized plug, and be con-
nected to the same power outlet as the Memory HiLogger’s
AC adapter.

If the Memory HiLogger and measurement object are con-
nected to different mains circuits, or if an ungrounded
power cord is used, the potential difference between the dif-
ferent grounding paths may result in current flow through a
connection cable that could damage the measurement
object or Memory HiLogger.
• The input voltage range limits are 0 to +10 V. If these limits
are exceeded, the instrument could be damaged and per-
sonal injury or death could occur, so do not attempt mea-
surement.
Measurement
Object
Memory

HiLogger
Connection

Cable
For safety, we recommend using only Hioki’s connection cable
(measurement lead cable).
P1 White (H)
P1 Red (L)
P2 Yellow (H)
P2 Black (L)
P3 Green (H)
P3 Blue (L)
P4 Gray (H)
P4 Brown (L)
Ends of the

9641 Connection Cable
(connects to Memory HiLogger common ground)
Shield
Connecting the Optional Model 9641 Connection Cable

(for Pulse Signal Input)
Connect the other end of
the cable to the pulse
source(s) to be mea-
sured.
Pulse Input Connector
1
2