Rohde & Schwarz 890 Series - Page 94

V L F > H F R E C E I V E R S f R & S E K 8 9 5 / R & S E K 8 9 6
User Manual f Cables for Control and Status Data
**)
EK 89x
X63
(GND) .1
(RxD) .3
(TxD) .2
(GND) .7
Address: 01
EK 89x
X63
(GND) .1
(RxD) .3
(TxD) .2
(GND) .7
Address: 02
EK 89x
X63
(GND) .1
(RxD) .3
(TxD) .2
(GND) .7
>5 V .17
Address: 03
EK 89x
X63
(GND) .1
(RxD) .3
(TxD) .2
(GND) .7
Address: n
Computer
TxD
RxD
GND
RS232
Bus Driver *)
Fig. 2.20 Operating Mode: Four>wire Bus (RS232) with XON>XOFF Handshake
(S4 = E or F; see A1.4)
*) If more than ten receivers
are operated on a bus, a
bus driver is required.
**) In a receiver system in which the
computer uses RS232, on the last
receiver in the chain preceding a
bus driver this wire link should be
established within the cable. Thus
a defined rest position of the RxD
input of the computer is achieved.
6164.0717.02_01
> 2.24 >