79
Subject to change without notice
MANUAL ADJUSTMENT PROCEDURE HM1508-2
– Check that no signal is applied at the BNC connectors.
– Press “Trigger” function key to call the “Adjust 1 Trigger” submenu.
– Press “Point” function key for automatic trigger point adjustment.
– Wait until the automatic adjustment has been fi nished.
– Continue with item 42.
– Press “Peak Peak” function key to call the “Trigger Peak Peak” submenu.
– Press “CH 1” function key to call the “Peak Peak CH 1” submenu.
– Connect a 25 mV
pp
(accuracy ± 0.1%), 1 kHz square wave signal via 50 cable and 50 through terminator to
input CH 1.
– Press “Save” function key to store the settings into user memory and to leave item 42.
– Disconnect the square wave signal from input CH 1.
– Continue with item 43.
– Press “CH 2” function key to call the “Peak Peak CH 2” submenu.
– Connect a 25 mV
pp
(accuracy ± 0.1%), 1 kHz square wave signal via 50 cable and 50 through terminator to
input CH 2.
– Press “Save” function key to store the settings into user memory and to leave item 43.
– Disconnect the square wave signal from input CH 2.
– Continue with item 44.
– Press “External” function key to call the “Peak Peak External” submenu.
– Connect a 2.5 V
pp
(accuracy ± 1%), 1 kHz square wave signal via 50 cable directly (without 50 through
terminator) to input CH 4.
– Press “Save” function key to store the settings into user memory and to leave item 44.
– Press REM pushbutton (EXIT MENU) to return to “Adjust 1 Trigger” menu.
– Disconnect the square wave signal from input CH 4.
– Continue with item 45.
41 Trigger Point (Software Adjustment)
42 Trigger Peak Peak CH 1 (Software Adjustment)
43 Trigger Peak Peak CH 2 (Software Adjustment)
44 Trigger Peak Peak External (Software Adjustment)
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