HP 4284A - Page 167

LED Display Test
Description
This test checks the ve LEDs on the front panel. When this test is
started, ve LED indicators, RMT , LTN , TLK , SRQ and DC BIAS ,
will be toggled ON and OFF once p er second.
HowtoPerform the LED Display Test
Use the following steps to perform the LED display test.
1. Move the cursor to the TEST MENU eld on the SELF TEST
page.
2. Press 4
2
5 and 4
ENTER
5 to select test number 2. The 7 LED
DISPLAY TEST screen will b e displayed.
3.
Press
NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN
TEST START to start the test. The ve LED indicators,
RMT , LTN , TLK , SRQ and DC BIAS , will b e toggled ON and
OFF once p er second.
4.
Press
NNNNNNNNNNNNNNNNNNNNNNNNNN
TEST END to stop the test and to exit from the
7 LED
DISPLAY TEST screen.
LCD Display Test
Description
This test checks the front panel LCD. When this test is started, all
LCD characters used are displayed and toggled b etween the normal
and inverse mo des once p er second.
HowtoPerform the LCD Display Test
Perform the following steps to p erform the LCD display test.
1. Move the cursor to the TEST MENU eld on the SELF TEST
page.
2. Press 4
3
5 and 4
ENTER
5 , to set the test number to 3. The 7 LCD
DISPLAY TEST screen and all LCD characters will b e displayed.
3.
Press
NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN
TEST START to start the test. The display will toggle
between the normal and inverse mo des once p er second.
4.
Press
NNNNNNNNNNNNNNNNNNNNNNNNNN
TEST END to stop the test and to exit from the
7 LCD
DISPLAY TEST screen.
Handler I/F Test
Description
This test checks the output signals of the Option 201 or 202 Handler
Interface. When this test is started, each of the handler output
signals is sequentially asserted for one second, until all output signals
have b een asserted, then the sequence is rep eated un
til
NNNNNNNNNNNNNNNNNNNNNNNNNN
TEST END is
pressed. This test using the Handler Simulator (HP PN 04278-65001)
is describ ed on CHAPTER 10, PERFORMANCE TEST .
5-14 Catalog/System Configuration