96
Subject to change without notice
MANUAL ADJUSTMENT PROCEDURE HM1508-2
R161, C129
71 HF Adjustment CH 1 A/D Converter Driver Amplifi er
– Set oscilloscope to DIGITAL mode.
– Connect a 1 MHz square wave signal of 25
mV
pp
via 50 cable and 50 through termina-
tion to input CH 1.
– Press AUTOSET pushbutton.
– Set channel 1 VOLTS/DIV knob to 5 mV/div.
– Set A time base to 50 ns/div.
– Locate and identify R161 and C129 on AB-
Board.
– Adjust R161 and C129 for minimum over-
shoot and fl at top.
– Continue with item 72.
R161 C105 R162C129
resistor overcompensate resistor undercompensate resistor correct
capacitor correct
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