HP 54540 Series - HP-IB;RS-232 Menu

Figure 11-2
Utility Menu
HP-IB/RS-232 Menu
Handshake You can use handshake to select either a hardware or
software handshake. Data Terminal Ready (DTR) is a hardware
handshake. A three-wire interface using DTR does not allow the sending
or receiving device to control data flow. No control over the data flow
increases the possibility of missing data or transferring incomplete data.
With an extended hardwire interface, selecting DTR allows a hardware
handshake to occur that uses hardware signals to control data flow.
XON is a software handshake that uses Transmit On (XON) and Transmit Off
(XOFF). A software handshake allows the receiving device to control the
data flow by requesting that the transmitting device temporarily stop sending
data until the receiving device is ready to receive additional data. XOFF
stops data transfer while XON resumes data transfer.
RS232 Connector Pin Out
Pin Number Signal
1 Data Terminal Ready
2 Transmit
3 Receive
4 Request to Send
5 Clear to Send
6 Data Set Ready
7 Ground
8 Data Carrier Detected
9 Ring
Shel! Protective Ground
2462030/
Pin out of RS-232 port looking into the connector
11-5