Keysight E3632A, User Manual

Page: 82 / 196

2 Operation and Features

RS-232 Interface Configuration
60 E3632A User’s Guide
Figure 2-5 DB-25 serial connection
DTR/DSR handshake protocol
The power supply is configured as a DTE (Data Terminal
Equipment) device and uses the DTR (Data Terminal Ready)
and DSR (Data Set Ready) lines of the RS- 232 interface to
handshake. The power supply uses the DTR line to send a
hold- off signal. The DTR line must be TRUE before the
power supply will accept data from the interface. When the
power supply sets the DTR line FALSE, the data must cease
within 10 characters.
To disable the DTR/DSR handshake, do not connect the DTR
line and tie the DSR line to logic TRUE. If you disable the
DTR/DSR handshake, also select a slower baud rate to
ensure that the data is transmitted correctly.
Instrument PC
DB9
Male
DB9
Female DB9
Female
DB9
Male
DCD
RX
TX
DTR
1
2
3
4
5
6
7
8
9
GND
DSR
RTS
CTS
RI
TX
RX
RTS
CTS
DSR
GND
DCD
DTR
5182-4794
Cable
5181-6641
Adapter
1
2
3
4
5
6
7
8
9
1
2
3
4
5
6
7
8
9
2
3
4
5
6
7
8
20
DB25
Female
DB25
Male