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5-10
CALIBRATION
ADJUSTMENT PROCEDURE
S8/9.
Pulse
reeponee
of
the *1007*1000
attenuation
(fine
adjustments)
Purpose:
optimal pulse
response
of
the
>100,
*1000
attenuation
circuit.
Calibration
equipment:
Tektronix
PG
506
Square
Wave
Calibration
Generator
Calibration setup:
See
calibration
setup H3.
Proce<3ure:
A
*
Apply a square
wave
with
a frequency
ot
1
kHz, amplitude
20V
peak-to-peak
(between
OV
and
+20V)
to
both channels
A
and
B.
Set the generator
to the position
"STD
AM
PL".
B
•
Press
the
READ/
softkey.
C
-
Apply
a
square
wave
with
a frequency
of
1
kHz. amplitude
50V
peak-to-peak
(between
OV
and
-fSOV)
to
both
channels
A
and
B.
Set
the generator
to
the
position
-STD AMPL*.
D
-
Press
the
READY
softkey.
SI
0/11/1
2/1 3/1 4/1 S/1
6/17
Gain
for 5
mV,
10
mV,
20
mV, 50 mV, 100 mV, 200 mV,
2V,
20V
Purpose:
correction of the
system
gain (from
BNC
to
microprocessor)
In
attenuator
settings:
5
mV,
1
0
mV, 20 mV, 50 mV, 100 mV, 200 mV,
2V,
20V.
Calibration
equipment:
Tektronix
PQ
506 Square
Wave
Calibration
Generator
Calibration setup:
See
calibration
seti^ H3.
Procedure:
A
•
Apply a square
wave
with a
frequency
ot
1
kHz, amplitude
20
mV
peak-to-peak
to
both
channels
A
and
B.
Set the generator
to the position
"STD AMPL".
B
-
Press
the
READY
softkey.
C
•
Change
the
Input
voltage according
to
table
5.2.
After
each
calibration
press
the
READY
softkey.
Use
the adjust/sdect
keys
to
advance/go back
in
the
list.
NOTE:
These
steps
calibrate
both
channel
A
and
B
at
the
same
t/me.
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