Fluke 5520A - Testing RS-232 UUT Port Operation Via a Terminal; Testing the RS-232 UUT Port Via RS-232 Host Port

5520A
Operators Manual
5-18
5-12. Testing the RS-232 UUT Port via RS-232 Host Port
Choose or adapt one of the following test procedures to test the Calibrator RS-232 UUT
port via the RS-232 Host port. Connect the UUT and PC as shown in 5-5. Note the use of
a modem cable (NOT null modem) for UUT connection. (See Appendix C for
information about RS-232 cables and connectors.)
UUT
5520A Calibrator
Controller
SERIAL 2
TO UUT
Port
COM Port
RS-232
Port
Null Modem Cable
Modem Cable
nn312f.eps
Figure 5-5. Testing the RS-232 UUT Port via RS-232 Host Port
Terminal This procedure uses the Terminal accessory supplied with Windows (or
equal) to test RS-232 UUT port operation.
Visual Basic This procedure uses Visual Basic (see Appendix D) to test RS-232 Host
port and RS-232 UUT port operation.
5-13. Testing RS-232 UUT Port Operation via a Terminal
Complete the following procedure to test RS-232 UUT port operation via the RS-232
Host port using the Windows Terminal accessory (or equal).
1. Complete “RS-232 UUT Port Setup Procedure” to the 5520A RS-232 UUT port to
match the parameters of the UUT RS-232 port.
2. Complete “Testing RS-232 Host Port Operation using a Terminal” to set up the
5520A RS-232 Host port to match the parameters of the PC COM port. After Step 9,
return to this procedure and continue to Step 3 below.
3. On the Terminal screen, type UUT_SEND “<uut command>“ where <uut
command> is the command you selected for the UUT response, then press <Enter>.
Observe the UUT responds. For example, to send the command REMS to a UUT, use
UUT_SEND “REMS\n” and press <Enter>.
Note the use of \n, which indicates a Carriage Return (CR) as the end-of-line
character. Other characters include \r (Line Feed), \t (Tab), \b (Backspace) and
\f (Form Feed). If your UUT commands require an end-of-line character, select one
or more of the above.