SeaLevel 5104e, Руководство пользователя

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© Sealevel Systems, Inc. 5104e & 5104es Manual | SL9273 8/2021
The RX+/- lines do not have pull up or pull down biasing. For high baud rates or long distances,
you may need to implement bias for the RX+/- lines. To do this, add connections of the RX+ pin to
pin 25, and the RX- pin to pin 1.
Alternatively, add a 1K Ω resistor from the RX- pin to the GND pin,
and a 820 Ω resistor from the RX+ pin to the +5V pin of DTR. Do not toggle DTR or the bias will be
lost.
RS-530 (RS-422)
Pin # Signal Name Mode
2 TDA TX – Transmit Negative Output
3 RDA RX – Receive Negative Input
4 RTSA RTS – Request To Send Negative Output
5 CTSA CTS – Clear To Send Negative Input
6 DSRA DSR – Data Set Ready Negative Input
7 GND Ground
8 DCDA DCD – Data Carrier Detect Negative * Input
9 RXCB RXC+ Receive Clock Positive Input
10 DCDB DCD+ Data Carrier Detect Positive * Input
11 TSETB TSET+ Transmit Signal Element Output
12 TXCB TXC+ Transmit Clock Positive Input
13 CTSB CTS+ Clear To Send Positive Input
14 TDB TX+ Transmit Positive Output
15 TXCA TXC – Transmit Clock Negative Input
16 RDB RX+ Receive Positive Input
17 RXCA RXC – Receive Clock Negative Input
19 RTSB RTS+ Request To Send Positive Output
20 DTRA DTR – Data Terminal Ready Negative Output
22 DSRB DSR+ Data Set Ready Positive Input
23 DTRB DTR+ Data Terminal Ready Positive Output
24 TSETA TSET – Transmit Signal Element Timing – Output
When in External Sync mode, the external sync signal is fed into DCD.