Tektronix FG 5010 User Manual

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INTERNAL
ADJUSTMENT
PROCEDURE
c . Change the + lead of the dvm from TP1420 to
TP1610 .
Introduction
This
procedure
should be
performed if the
instrument
fails
to
meet the
performance
requirements of the
electrical
characteristics
listed in
the
Specification
section
of
this
man
ual
.
To
ensure
continued
instrument
accuracy , it
is
recom
mended that
adjustment be
performed
every
1000 hours of
operation or
every
6
months
if
used
infrequently .
Adjust
ment is
also
recommended
following
instrument
repair or
modification
.
The
adjustments
must be
made at an
ambient
temperature of + 20 ° C to + 30 ° C .
Services
Available
Tektronix , Inc.
provides
complete
instrument
repair and
adjustment at
local
field
service
centers and at
the
factory
service
center
.
Contact
your
local Tektronix field
office
or
representative for further information .
Test
Equipment
Required
The test
equipment
( or
equivalent ) listed in
Table 5-1 in
the
Performance Check
section
of
this
manual is
required
for
adjustment of the
FG
5010.
Specifications
given
for the
test
equipment are the
minimum
necessary for
accurate ad
justment . All test
equipment is
assumed to
be
correctly cali
brated and
operating
within specification .
If
other test
equipment is
substituted , the
adjustment may
need to be
altered to
meet the
requirements of the
equipment
used
.
Adjustment
Access
Operate the FG
5010
on
two
extender
cables
(
refer
to
Table
7-2 for
Tektronix
Part
No.
)
outside
the
power
module .
Remove the
side covers , top ,
and
back panel of the
instru
ment
to
gain
access to all
adjustments
.
Adjustments
on
the
Sine
Shaper
board may be
accessed by
removing the
right
side cover .
An
extender kit ( refer
to Table
7-2 for
Tektronix
Part No. ) is
necessary
to
gain access
to the Loop
1 and
Output
Amplifier
circuit
boards
.
The
adjustments on the
Loop 2 board
are located at the
top of the board
. See the
Adjustment
Locations
illustrations in the
pullout
pages at
the
rear of
this manual .
Put Loop 1 on
extender
and remove
shields .
Install
P1121 in
CAL
position on
CPU
board .
1.
Adjust + and
-12 V Adj
( Sine
Shaper
A80 )
a .
Connect
the
digital
voltmeter (
dvm
)
positive
lead
to
TP1420 and
minus
lead
to
TP1510 .
b .
ADJUST
R1427
, +12
V Adj ,
for a
voltmeter
reading
from
11.990 to
12.010 .
Record
this
reading
.
REV
JUL
1982
Section 6 -
FG
5010
d .
ADJUST
-
R1440 , —
12 V
Adj , for a
voltmeter
reading
from
11.90 to
12.010 .
For
best
supply
tracking ,
adjust
this
voltage
to
the
identical
value of the
+12
V
supply .
e .
Remove
the
dvm for
the
next
step
.
2.
Adjust +10 V
Reference (
Loop
1 ,
A60 )
a . Place the
Loop 1
board on the
board
extender . Con
nect
the
dvm
positive
lead to the
+10
V
test
point
(
TP1731 ) .
Connect the
negative
lead
to
analog
ground ( rear
end of
C1421
on
A60
) .
b .
ADJUST
R1735
,
+10
V Adj
, for a
voltmeter
reading
from
9.999
V to
10.001
V.
c .
Remove
these
connections for the
next
step
.
3. Adjust Up Cur Ofst and Dn Cur Ofst ,
Preliminary Setting ( Loop 1 , A60 )
a . Make certain the Loop 1 board is on the extender .
b . Press the following buttons in the order listed :
(
SETUPS
)
Sets frequency and
symmetry
DACs
to .
RECALL
c . Connect the dvm positive lead to the rear end of
R1534 and the
negative lead to
analog ground .
d . ADJUST - R1535 , Up Cur Ofst , for a voltmeter read
ing from 0.002 V to +0.002 V.
e . Change the + dvm lead to the rear of R1632 .
f . ADJUST R1634 , Dn Cur Ofst , for a voltmeter read
ing from -0.002 V to +0.002 V.
g . Remove the voltmeter leads .
6-1

Tektronix FG 5010 Specifications

General

Brand	Tektronix
Model	FG 5010
Category	Portable Generator
Language	English