97
Subject to change without notice
MANUAL ADJUSTMENT PROCEDURE HM1508-2
R162, C105
72 HF Adjustment CH 2 A/D Converter Driver Amplifi er
– Connect a 1 MHz square wave signal of 25
mV
pp
via 50 cable and 50 through terminati-
on to input CH 2.
– Press VERT/XY pushbutton to call the Vertical
menu.
– Press CH 2 function key to select CH 2 mode.
– Set channel 2 VOLTS/DIV knob to 5 mV/div.
– Set A time base to 50 ns/div.
– Locate and identify R162 and C105 on AB-
Board.
– Adjust R162 and C105 for minimum overshoot and fl at top.
– Set oscilloscope to ANALOG mode.
R161 C105 R162C129
resistor overcompensate resistor undercompensate resistor correct
capacitor overcompensate capacitor undercompensate capacitor correct
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