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N - 2 RS-232 CABLE CONFIGURATIONS
B. Cable to printer/plotter with hardware handshake
parameters: "3-wire/7-wire" = 7-wire
"XON-XOFF on off" = on or off
C. Cable to controller with hardware handshake
parameters: "3-wire/7-wire" = 7-wire
"XON-XOFF on off" = on or off
The communication is confirm the RfR protocol. This means that signal RfR is
active when the oscilloscope can receive data.
NOTE: When during data transfer the signal DSR on the oscilloscope becomes
inactive, the serial communication buffers of the instrument are cleared.
The hard copy action or waveform transfer stops then.
3
2
7
8
4
6
1
CASE
5
9PIN
(female)
OSCILLOSCOPE
(DTE)
SIGNAL
TxD
RxD
RfR
CTS
DTR
DSR
DCD
S.GND
F.GND
9PIN
(male)
3
2
7
8
4
6
1
5
CASE
25 PIN
(male)
2
3
4
5
20
6
8
7
1
PRINTER/PLOTTER
(DTE)
ST6921
3
2
7
8
4
6
1
CASE
5
9PIN
(female)
OSCILLOSCOPE
(DTE)
SIGNAL
TxD
RxD
RfR
CTS
DTR
DSR
DCD
S.GND
F.GND
9PIN
(female)
3
2
7
8
4
6
1
5
CASE
25 PIN
(female)
2
3
4
5
20
6
8
7
1
CONTROLLER
(DTE)
ST6920