HP E4418B User Manual

HP4402.book : chapter3.fm 31 Thu Feb 11 15:53:59 1999
Menu Reference
Front Panel Menu Reference "System/Inputs" Menu
HP E4418B User’s Guide 3-31
back from the UART to check that the settings are
correct.
❏
Press this softkey to initiate a UART local loop back
diagnostic with the transmitter (Tx) internally connected
to the receiver (Rx).
❏
Press this softkey to initiate an RS232 loop back test on
the serial interface port. A pop up message appears
stating that a test connector must be in place. The test
connector must have the following pins jumpered: Tx (3)
and Rx (2), RTS (7) and CTS (8), DTR (4) and DSR (6).
This test will only run if the RS232 interface is currently
selected.
A softkey menu offers the following choices:
Run Test - performs the RS232 loop back test and
reports the results.
Cancel Test - quit test and return to previous menu.
❏
Press this softkey to initiate an RS422 loop back test on
the serial interface port. A pop up message appears
stating that a test connector must be in place. The test
connector must have the following pins jumpered: Tx- (4)
and Rx- (2), Tx+(3) and Rx+(6), RTS-(9) and CTS-(1),
RTS+(7) and RTS-(8).
This test will only run if the RS422 interface is currently
selected.
A softkey menu offers the following choices:
Run Test - performs the RS422 loop back test and
reports the results.
Cancel Test -quit test and return to previous menu.
■
Press this softkey to access a menu which allows you to set the
defaults for contrast and brightness.
◆
Press this softkey to increase the display contrast.
◆
Press this softkey to decrease the display contrast.
Local Loop Back
RS232 Loop Back
RS422 Loop Back
Display

HP E4418B Specifications

General

Brand	HP
Model	E4418B
Category	Measuring Instruments
Language	English