2.0
To set CH2 Attenuator
compensation.
PC73
2.1
Connect
Calibrator
to INPUT 2.
2.2
Check CH2 is on.
2.3
Press INT TRIG 2.
2.4
DC-GND-AC. Set CHl to GND, CH2 to DC.
2.5
Carry out operation
1.5 through
1.12 above,
using the
respective
CH2 controls.
4.3.11
HORIZONTAL
AMPLIFIER
(gain
&
timing)
1.0
To set sweep
speed
and
trace
length:
C65,
C67.
C207. Rl06,
R131,R132.
PCll0
1.1
Push FINE for Xl gain.
1.2
Set TIME/DIV
for 1 ms.
1.3
Connect
Marker Generator
to INPUT 1.
1.4
Set Marker Generator
to 1 ms.
1.5
Switch CHl on.
1.6
Press INT TRIG 1.
1.7
Adjust
R132 for correct
timing.
1 pulse/div.
1.8
Adjust
Rl06
for 10.2 div trace length.
1.9
Set TIME/DIV
for 0.1
J1s.
1.10
Adjust
C67 for 10.2 div.
1.11
Set Marker Generator
to 100
J1s.
1.12
Set T1ME/DIV to 1 ms.
1.13
PullFINEoutforX5gain.
1.14
Adjust
R131 for 2 markers/div.
1 .15
Disconnect
Marker Generator.
1.16
Connect
Signal Generator
to INPUT 1.
1.17
Push FINE Xl gain.
1.18
Set TIME/DIV
to 0.1
J1s.
1.19
Set Signal Generator
to 10 MHz sinewave.
1.20
Adjust
C65 for linearity
of timing at the start
of the
trace.
2.0
To set EXT X compensation:
C2. PCll0
2.1
Connect
Calibrator
to EXT X socket.
2.2
Set Calibrator
to approximately
700 mV peak to peak,
100 kHz squarewave.
2.3
Set VARIABLE
(speed) to EXT X.
2.4
Pull FINE for X5 gain.
2.5
Observe trace equals 3.5 divs approximately.
2.6
Adjust
C2 to remove over and under shoot.
2.7
Disconnect
Calibrator.
2.8
Push FINE for Xl gain.
2.9
Turn VARIABLE
(speed) fully clockwise.
4.3.12
1.0
1.1
SWEEP (Single Shot adjustment)
Set Single shot:
Rl12.
PCll0
Switch CHl on, CH2 off.
1.2
Press INT TRIG 1.
1.3
Set DC-GND-AC to AC.
1.4
Connect
Signal Generator
to INPUl
1.
1.5
Set Signal Generator
to 50 mV squarewave,
1-20 kHz
to give 5 divisions display.
1.6
Set TIME/DIV
to 1 ms.
1.7
Press AC (Trig Mode).
1.8
Adjust STABILITY
and LEVEL for locked display.
1.9
Press SINGLE SHOT.
1.10
Turn R 112 slightly anti-clockwise.
1.11
Press RESET.
1.12
Observe if single sweep occurs.
1.13
Repeat
1.9
through
1.12
until
single sweep
fails to
occur
and
note
slot position
of R 112.
1.14
Set TIME/DIV
to 0.1
J1s.
1.15
Turn R 112 slightly clockwise.
1.16
Press RESET.
1.17
Observe Neon.
1.18
Repeat 1.15 through
1.17 until single sweep
fails
to
occur and note slot position
of Rl12.
NOTE: The
sweep
and
neon
light
should
be too
fast
to
observe,
however,
failure to single sweep is indicated
by the
neon remaining
on.
1.19
Set
Rl12
midway
between
positions
noted
in 1.13
and
1.18.
1.20
Set DC-GND-AC to GND.
1.21
Press RESET, observe neon light.
1.22
Set DC-GN D-AC to AC.
1.23
Observe
neon
extinguishes,
indicating
sweep
has
occurred.
1.24
Disconnect
Signal Generator.
1.25
Press REP.
4.3.13
1.0
1.1
1.2
. X-
Y MODE (CH2 gain)
To set
X-V
gain: R787.
T/D
switcl>
Connect
Calibrator
to INPUT 2.
Set
Calibrator
to
50
mV
peak
to
peak
at
1 kHz
squarewave.
Set VOLTS/DIV
to 10 mY.
Push VARIABLE
(speed) for X - Y operation.
Adjust
R787 for 5 div trace on X axis.
Release VARIABLE
(speed).
4.3.14
1.0
11
VERTICAL
AMPLIFIER
(Pulse Response)
To set CHl neutralization
C605 and C608.
PCl15
Connect
Calibrator
to 50n
Terminator
1.2
Connect
Terminator
to INPUT
1.
1.3
Set Calibrator
to
1 MHz squarewave.
Содержание DM64
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