45
Subject to change without notice
11
P2002:
Y-Gain CH I at 2 mV/div
– Locate and identify P2007 on YP-Board.
– Connect a 10 mV
pp
/ 1 kHz square wave signal via a 50 Ω
cable and a 50 Ω through-terminator to input channel I.
– Set input attenuator CH I to 5 mV/div.
– Rotate variable gain knob clockwise to CAL. position.
– Set input coupling to DC.
– Set time base to 0.5 ms/div.
– Press Y-MAG x5 channel I pushbutton (IN position).
– Adjust P2002 for 5 division signal height.
– Rotate variable gain knob fully counter clockwise (left
stop).
– Check that the signal height is 2 divisions or less.
– Rotate variable gain knob to CAL. position.
Incorrect (too low)
Incorrect (too high)
Correct
2.5 : 1 signal
<
2div
12
P2003:
Channel I Y-MAG. x5 balance
– Locate and identify P2003 on YP-Board.
– Set input attenuator CH I to 5 mV/div.
– Press channel I GND pushbutton (IN position).
– Set input coupling of CH I to DC.
– Set trace with Y-POS I control to the horizontal centre line
of the graticule.
– Press and release the CHI Y MAG x5 pushbutton and adjust
P2003 for no trace movement.
x1 (active) x5 incorrect
x1 x5 (active) incorrect
x1 (active) x5 correct
x1 x5 (active) correct
P2008
P2011 P2012
P2006
P2007
P2005
P2002
P2001
C2007
C2010
C2009
C2011
P2003
C2107
C2108
C2103
C2110
P2016
P2014
P2015
P2010
P2009
YP-Board
P2008
P2011 P2012
P2006
P2007
P2005
P2002
P2001
C2007
C2010
C2009
C2011
P2003
C2107
C2108
C2103
C2110
P2016
P2014
P2015
P2010
P2009
YP-Board
A d j u s t m e n t P r o c e d e r e H M 3 0 3 - 6
