NF FRA5014, Instruction Manual

Page: 51 / 107

5.1 Preparations for Use
FRA5014 5-3
5.1.3 RS-232 setup
Like the GPIB and USBTMC, the RS-232 interface is externally controlled, except for functions that
are specific to the GPIB and USBTMC.
1) GPIB functions that are not in RS-232
•
Interrupt to controller and serial polling upon service request
Use “*STB?” to query the contents of the status byte register.
•
GPIB-specific commands such as device clear
•
Connections to multiple devices
Only 1-to-1 connections is possible with RS-232.
2) Specifications
•
Parity None, even or odd
•
Stop bits 1 bit or 2 bits
•
Baud rate 1200, 4800, 9600, or 38400
Data has fixed length of 8 bits, flow control is fixed as xon/xoff
3) Connection with personal computer
Use a reverse connection type RS-232 cable to connect the FRA5014 to the personal computer’s
D-sub 9-pin serial connector.
Connection diagram
Personal computer
D-sub 9-pin (female) D-sub 25-pin (male)
FRA5014
2
2
5
7
3 3

RXD
→
TXD
GND
TXD

RXD
→
GND
Reverse connection type RS-232 cable
* Do not connect to terminals that are not shown above.
* LAN connections are enabled when using an RS-232/Ethernet converter (such as
Lantronix general-purpose device server UDS1100).