Hioki SW1001, Instruction Manual, Page: 31 / 164

27
Overview of Channel Switching
3.2 Overview of Channel Switching
This device connects to the internal analog bus by switching the relay of each module channel. The
internal analog bus is connected to the terminal for connecting the instrument.
The device is all controlled by communication commands. For details about the command, refer to
the description of each item.
H
L
visio_02 アナログバス図
H
L
H
L
H
L
TERMINAL 1
2-terminal banana
Sense
channel
Module
TERMINAL 2
4-terminal banana
TERMINAL 3
BNC
Internal analog bus
Sense
Sense shield
GND terminal
Source
channel
Return
channel
Shield wire
Bus relay
Channel relay
Sense
Source Source
Sense
Source shield
• The sense shield for TERMINAL 3 (BNC terminal) is common (short circuit) for H and L.
• The diagram for wire connection inside the module is conceptual and differs from the actual
module connection. See the wiring diagram for each module.
Reference: Switching wiring diagram (p. 132, p. 138)
Select the channel to be measured using the channel relay and specify the terminal to which
the channel is to be connected (select the connection method) using the bus relay. The selected
channel can be measured using an instrument.
The sense and source for
TERMINAL 2
(4-terminal banana terminal) and
TERMINAL 3
(BNC
terminal) use a common analog bus (electrically connected).
CAUTION
Do not connect TERMINAL 2 and TERMINAL 3 to the instrument at the same time.
Doing so may damage the instrument.
3
Channel Switching