Calibration—
TM 5003
INTERNAL
ADJUSTMENT
PROCEDURE
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.
Adjustments
must be made in an
ambient tem
perature 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
Test
equipment (or equivalent) listed
in Table 4-1 is re
quired
for adjustment of the TM 5003. Specifications given
for the test equipment of the minimum necessary for
accu
rate adjustment.
All test equipment is assumed to be cor
rectly calibrated at
operating within specification. If other
test
equipment is substituted, the calibration setup may
need to be altered to meet the requirements of the equip
ment used.
R1830
Pwr Lim
—
26
V
+26
V
R1530
8
V
Adj
Fig. 4-3. Locations of voltage buses and adjustments.
—
2955-09
b. Set the
line voltage to nominal for the selected
range.
Adjustment Access
Remove the
top
cover to gain access to the
+8 V and
ground buses
and the adjustment. Figure
4-3 shows the
adjustment
locations.
c.
CHECK—
for a reading of
8.2 V.
Power
Limit Adjustment
The
Pwr
Lim adjustment R1830 is used for
troubleshooting only.
Before commencing calibration make
certain
this adjustment
is fully ccw.
d.
ADJUST—
R1530,
8 V Adj.
for a dvm reading of
8.2
V.
1.
Adjust
8 V Adj
a.
Connect the dmm to the
+8 V and Gnd terminals as
shown in
Fig.
4-2. The
voltage bus location is shown in Fig.
4-3.
e.
Remove
all connections.
f.
This completes the internal adjustment procedure.
4-5
Summary of Contents for TM 5003
Page 8: ...TM 5003 2955 00 TM 5003 Power Module...
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Page 58: ...AC POWER TO REGULATOR TM 5003 2...
Page 59: ...2955 34 BLOCK DIAGRAM JS...
Page 60: ...Fig 8 3 Line Filter Board...
Page 61: ...PARTS LOCATION GRID 1 2 3 4 5 6 1 2 3 Fig 8 2 De Power Supply Primary Board ASSY A13...
Page 64: ...TM 5003 2955 30...
Page 67: ...Ag 8 4 De Power Supply Regulator Waveforms...
Page 68: ...TM 5003...
Page 71: ...ASSY A10...
Page 73: ...TM 5003 295...
Page 76: ...2 3 4 5 6 A E 7 8 TM 5003...
Page 81: ...a...
Page 82: ...28 FIG 1 CABINET M TM 5003...
Page 83: ...FIG 2 EXPLODED TM 5003...
Page 84: ......
Page 96: ...TM5003 A10 MAIN INI 28A 28B iz ir Fig 8 7 Main Interface Board backside Assy AID...
Page 98: ...BOARD CUSTOM INTERFACING AID Fig 8 8 Main Interface Board rear view of frontside Assy A10...