Manual
© Sealevel Systems, Inc. 
- 8 - 
ACB-MP.PCI User Manual 
RS-530A 
Base+5, M3-M0=F, 1111 
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 Timing +  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 
18 LL  Local Loopback  Output 
19  RTSB RTS+  Request To Send Positive  Output 
20  DTRA DTR–  Data Terminal Ready Negative  Output 
21 RL  Remote Loopback  Output 
24  TSETA TSET–  Transmit Signal Element Timing –  Output 
V.35 Signals 
Base+5, M3-M0=E, 1110 
Pin #  Signal  Name  V.35  Mode 
2  TDA TX–  Transmit Negative  P  Output 
3  RDA RX–  Receive Negative  R  Input 
4  RTS  Request To Send  C  Output * 
5  CTS  Clear To Send  D  Input * 
6  DSR  Data Set Ready  E  Input * 
7 GND  Ground  B   
8  DCD  Data Carrier Detect  F  Input * 
9  RXCB RXC+  Receive Clock Positive  X  Input 
11  TSETB TSET+  Transmit Signal Element Timing +  W  Output 
12  TXCB TXC+  Transmit Clock Positive  AA  Input 
14  TDB TX+  Transmit Positive  S  Output 
15  TXCA TXC–  Transmit Clock Negative  Y  Input 
16  RDB RX+  Receive Positive  T  Input 
17  RXCA RXC–  Receive Clock Negative  V  Input 
18 LL  Local Loopback    Output * 
20  DTR  Data Terminal Ready  H  Output * 
21 RL  Remote Loopback    Output * 
24  TSETA TSET–  Transmit Signal Element Timing –  U  Output 
Note: All modem control signals are single ended (un-balanced) with RS-232 signal levels. 










