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Chapter 3. Communications Operations of BHT-5000
3.1.2 For BHT-5000
[ 1 ] Interface Connector and Pin Assignment
The BHT-5000 has a direct-connect interface port which is connectable to the 3-pole
mini stereo plug (ø2.5 mm or 0.1") and supports a subset of the RS-232C interface as
shown below.
Using a direct-connect interface cable having the mini stereo plugs makes it possible
to connect the BHT-5000 to a host computer (or another BHT-5000) directly without
any routing through the CU-5000.
RD
SG
SD
The poles of the plug are assigned as listed below.
Signal Name
Function
Signal Input/Output
BHT-5000 External device
SD
Send data
→
RD
Receive data
←
SG
Signal ground
The input/output voltage threshold for the logical valued signal is listed below.
Logical Value
Input Voltage Threshold
Output Voltage Threshold
(RD)
(SD)
0
3V min.
5V min.
1
-3V max.
-5V max.
The direct-connect interface port is not designed to stand frequent connecting/
disconnecting. Do not plug and unplug basically more than one time a day;
otherwise, the service life of the plug will shorten. To connect the BHT-5000 to a
host computer (or another BHT-5000) frequently, use the CU-5000.
3-pole Mini Stereo Plug (ø2.5 mm or 0.1")
NOTE
