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R & S E K 8 9 5 / R & S E K 8 9 6
User Manual
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External Interfaces
A2.7 Control Line Connection (RS232C > RS485)
Male connector strip, 25>way
(FM 099.8573)
Signal designation / level
Ground, same potential as contact .7
TxD (transmit data)
RxD (receive data)
RTS (request to send)
CTS (clear to send)
DSR (data set ready)
Ground, same potential as contact .1
not used
RxD (inverted, receive data)
TxD (inverted, transmit data)
not used
not used
not used
not used
not used
not used
Tx/RxC (transmit / receive clock, if switch S3 is set
to position 0
HEX
; for all other switch positions the
output is connected to >5 V via 12 k])
not used
not used
DTR (data terminal ready)
not used
not used
not used
not used
RTS (inverted, request to send)
Contact
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
Mating connector:
Trapezoidal female connector
strip, 25>way (D>series)
(FM 018.5756)
Housing screened
(FM 627.1826)
14
RS232C > RS485
1
6164.0717.02_01
> A2.6 >
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