Fluke 5520A Service Manual

®
PN 688754
February 1998 Rev. 1, 4/98
© 1998 Fluke Corporation, Inc. All rights reserved. Printed in USA.
All product names are trademarks of their respective companies
5520A
Multi-Product
Operators Guide

1
Contents
What is in this Guide?..........................................3
Safety Information................................................3
How to Contact Fluke...........................................7
Unpacking and Inspecting....................................7
Replacing the Fuse..............................................8
Selecting Line Voltage .......................................10
Connecting to Line Power ..................................10
Cooling Considerations......................................11
Front Panel........................................................12
Rear Panel.........................................................18
Turning on the Calibrator ...................................21
Warming up the Calibrator .................................22
Using the Softkeys.............................................23
Using the Setup Menu........................................23
Instrument Setup Menu...................................24
Utility Functions Menu ....................................25
Format EEPROM Menu ..................................25
Zeroing the Calibrator........................................29
Operate and Standby.........................................30
Connecting the Calibrator to a UUT....................30
Using the EARTH and EXGRD Keys ..................31
Earth ..............................................................31
External Guard ...............................................32
Four-Wire and Two-Wire Connections................33
Four-Wire Connection.....................................33
Two-Wire Compensation.................................33
Compensation Off...........................................33
Cable Connection Diagrams...............................33
RMS Versus p-p Waveforms ..............................38
Auto Range Versus Locked Range.....................38
Setting Outputs..................................................39
DC Voltage Output..........................................39
AC Voltage Output..........................................40
DC Current Output..........................................42
AC Current Output..........................................43
DC Power Output............................................45
AC Power Output............................................47

2
Dual DC Voltage Output .................................51
Dual AC Voltage Output..................................53
Resistance Output..........................................57
Capacitance Output ...........................................59
Temperature Simulation (TC)..........................60
Temperature Simulation (RTD) .......................63
Measuring a Thermocouple Output.....................65
Measuring Pressure...........................................68
Waveforms.........................................................72
Sinewave (sine)..............................................72
Trianglewave (tri)............................................72
Squarewave (square)......................................73
Truncated Sinewave (truncs) ..........................73
Setting Harmonics..............................................74
Adjusting the Phase...........................................75
Setting a Phase Angle....................................77
Setting a Power Factor ...................................77
Setting a DC Offset............................................78
Editing and Error Output Settings.......................79
Editing the Output Setting...............................80
Displaying the Output Error.............................80
Multiplying and Dividing..................................81
Setting Voltage and Current Limits.....................81
Synchronizing the Calibrator using 10 MHz
IN/OUT .............................................................82
Using an External 10 MHz Clock.....................83
Sourcing Current with Parallel-Connected
5520As...........................................................84
Performance Verification....................................85
Internal Fuses....................................................86

3
What is in this Guide?
The 5520A Operator Guide is a condensation of
information in the 5520A Operators Manual (PN
688739). For complete descriptions of the
Calibrator’s features, functions, and operating
procedures, refer to the Operators Manual .
Safety Information
Warning
The Calibrator can supply lethal voltages.
Read this guide before operating the
Calibrator.
This Calibrator complies with IEC publication
1010-1 (1992-1), Safety Requirements for
Electrical Measuring, Control and Laboratory
Equipment, and ANSI/ISA-S82.01-1994, and
CAN/CSA-C22.2 No. 1010.1-92. This manual
contains information, warnings, and cautions
that must be followed to ensure safe operation
and to maintain the Calibrator in a safe
condition. Use of this Calibrator in a manner not
specified herein may impair the protection
provided by the Calibrator.
This Calibrator is designed for IEC 1010-1
Installation Category II use. It is not designed
for connection to circuits rated over 4800 VA.
Warning statements identify conditions or
practices that could result in personal injury or
loss of life.
Caution statements identify conditions or
practices that could result in damage to
equipment.

4
Safety Information (cont)
Symbols
Warning. Risk of electric shock. Refer
to the manual for information.
Chassis (earth) ground terminal.
Attention. Refer to the manual for
information about this feature. This
symbol appears on the rear panel
CHASSIS GROUND terminal and by
the fuse compartment.
AC Power Source
The Calibrator is intended to operate from an ac
power source that will not apply more than 264V ac
rms between the supply conductors or between
either supply conductor and ground. A protective
ground connection by way of the grounding
conductor in the power cord is required for safe
operation.
Use the Proper Fuse
To avoid fire hazard, use only the specified
replacement fuse:
•For 100 V or 120 V operation, use a 5 A/250 V
time delay fuse (Fluke PN 109215).
•For 200 V or 240 V operation, use a 2.5 A/250
V time delay fuse (Fluke PN 851931).

5
Safety Information (cont)
Grounding the Calibrator
The Calibrator uses controlled overvoltage
techniques that require the Calibrator to be
grounded whenever normal mode or common
mode ac voltages or transient voltages may
occur. The enclosure must be grounded through
the grounding conductor of the power cord, or
through the rear panel CHASSIS GROUND
binding post.
Use the Proper Power Cord
Use only the power cord and connector
appropriate for the voltage and plug configuration
in your country.
Use only a power cord that is in good condition.
Refer power cord and connector changes to
qualified service personnel.
Do Not Operate in Explosive
Atmospheres
To avoid explosion, do not operate the
Calibrator in an atmosphere of explosive gas.
Check Insulation Ratings
Verify that the voltage applied to the unit under
test does not exceed the insulation rating of the
UUT and the interconnecting cables.

6
Safety Information (cont)
Do Not Remove Cover During Operation
To avoid personal injury or death, do not
remove the Calibrator cover without first
removing the power source connected to the
rear panel. Do not operate the Calibrator
without the cover properly installed. Normal
calibration is accomplished with the cover
closed. Access procedures and the warnings for
such procedures are contained in the 5520A
Service Manual . Service procedures are for
qualified service personnel only.
Do Not Attempt to Operate if Protection
May Be Impaired
If the Calibrator appears damaged or operates
abnormally, protection may be impaired. Do not
attempt to operate the Calibrator under these
conditions. Refer all questions of proper
Calibrator operation to qualified service
personnel.

7
How to Contact Fluke
To order accessories, receive operating
assistance, or get the location of the nearest Fluke
distributor or Service Center, call:
1-800-44FLUKE (1-800-443-5853) in U.S.A. and
Canada
[phone] in Europe
[phone] Japan
+65-*-276-6196 Singapore
[phone] from other countries
Address correspondence to:
Fluke Corporation Fluke Europe B.V.
P.O. Box 9090, P.O. Box 1186,
Everett, WA 98206-9090 5602 BD Eindhoven
USA The Netherlands
Visit uson the World Wide Web at: www.fluke.com
Unpacking and Inspecting
The Calibrator is shipped in a container designed
to prevent damage. Inspect the Calibrator carefully
for damage and immediately report any damage to
the shipper. Instructions are included in the
shipping container.
When you unpack the Calibrator, determine if your
order is complete. Standard equipment is listed in
the next table. Report any shortage to the place of
purchase or to the nearest Fluke Technical Service
Center.
If reshipping the Calibrator, use the original
container. If it is not available, you can order a
new container from Fluke by indicating the
Calibrator’s model and serial number.

8
Standard Equipment
Item Number
Calibrator 5520A
Line Power Cord *
5520A Operators Manual (English) 688739
5520A Programmers Guide (English) 688744
5520A Operators Guide (English) 688754
5520A Operators Guide (French) 688751
5520A Operators Guide (Italian)
5520A Operators Guide (German) 688762
5520A Operators Guide (Spanish) 688769
5520A Operators Guide (Japanese) 688770
5520A Operators Guide
(Simplified Chinese) 688777
Certificate of Calibration −
*See Chapter 2 of the 5520A Operator’s Manual
for available types
Replacing the Fuse
Caution
To avoid damage to the Calibrator,
verify that the correct fuse is installed
for the selected line voltage. For 100 V
and 120 V, use 5 A/250 V time delay; for
200 V and 240 V, use 2.5 A/250 V time
delay.
Disconnect line power. To replace the fuse, refer
to the following figure.

9
/ 63Hz
47Hz
300VA MAX
FUSE
CAUTION
FOR FIRE PROTECTION
REPLACE ONLY WITH A 250V FUSE
OF INDICATED RATING
MAINS SUPPLY
/120V
100V
/240V
220V T5.0A 250V
(SB)
T2.5A 250V
(SB)
0V
(SB)
120
120
Changing line voltage
Changing line fuse
240
Line voltage
indicator
oe01f.eps

10
Selecting Line Voltage
There are four line voltage settings: 100 V, 120 V,
200 V, and 240 V (47 to 63 Hz). To check the
setting, note the voltage visible through the
window of the fuse compartment cover. To change
the line voltage setting, see the figure above.
Connecting to Line Power
Warning
To avoid shock hazard, connect the
factory supplied, three-conductor
power cord to a properly grounded
power outlet. Do not use a two-
conductor adapter or extension cord;
this will break the protective ground
connection.
Use the rear-panel ground terminal for
a protective grounding wire if there is
any question as to instrument earth
grounding.
The Calibrator comes with the line power plug
appropriate for the country to which it is shipped. If
you need a different plug, refer to Chapter 2 of the
5520A Operators Manual for a list and illustrations
of available plugs.
After you verify that the line voltage is set correctly
and that the correct fuse is installed, connect the
Calibrator to a properly grounded three-prong
outlet.

11
Cooling Considerations
Warning
To avoid risk of injury, never operate or
power the Calibrator without the fan
filter in place.
Caution
Damage caused by overheating may
occur if the area around the air intake
is restricted, the intake air is too warm,
or the air filter becomes clogged.
The accuracy and dependability of the internal
parts of the Calibrator are enhanced by
maintaining the coolest possible internal
temperature. To lengthen the life of the Calibrator
and enhance its performance:
•The air filter must be at least 3 inches from
nearby walls or rack enclosures.
•The exhaust perforations on the sides of the
Calibrator must be clear of obstructions.
•The air entering the Calibrator must be at
room temperature: make sure the exhaust air
from another Calibrator is not directed into the
fan inlet.
•Clean the air filter every 30 days, or more
frequently if the Calibrator is operated in a
dusty environment.

12
Front Panel
The front panel provides all controls, displays,
indicators, and terminals.
POWER
I
O
0•
123
456
789
ENTER
M
k
mVHz
FIELD
EDIT
/
+
F
OPR EARTH SCOPE EXGRD MENU
PREV
SHIFT
RESET
CE
SETUP
REF
NEW
TC
MEAS
°F
µ
n
p
W
dBm sec
°CA
MULT
x
DIV
÷
MODES
MORE
5520A
CALIBRATOR
STBY
HI
LO
TRIG
GUARD
TC
20A
NORMAL AUX SCOPE
OUT
V, , ,RTD A, -SENSE, AUX V
20V PK MAX
20V PK MAX
3
4
5
6
7
89
12
oe02f.eps
AOutput Display
Two-line, backlit LCD showing output
amplitudes, frequency and Calibrator status.
BControl Display
Multipurpose backlit LCD for displaying data
entries, UUT error adjustments, softkey labels,
phase angles, watts, power factors, and other
prompts and messages.
CY
Places the Calibrator in the standby mode.
The NORMAL, AUX, and 20A output terminals
are internally disconnected from the
Calibrator.

13
Front Panel (cont)
DO
Places the Calibrator in the operate mode and
lights the indicator on the key.
EZ
Opens and closes a connection between the
NORMAL LO terminal and earth ground.
When the indicator is lit, the connection is
closed.
Fa
Activates or deactivates an oscilloscope
calibration option if one is installed. An
indicator on the key indicates when the option
is activated.
GB
Opens and closes an internal connection
between the internal NORMAL LO signal
ground and the internal guard shield. When
the indicator is lit, the connection is open.
HP
Recalls the previous set of menu choices.
Each press of this key backs up one level of
the menu tree.
ISoftkeys
Softkeys are identified by labels on the Control
Display directly above each key.

14
Front Panel (cont)
.
POWER
I
O
0•
123
456
789
ENTER
M
k
mVHz FIELD
EDIT
/
+
F
OPR EARTH SCOPE EXGRD MENU
PREV
SHIFT
RESET
CE
SETUP
REF
NEW
TC
MEAS
°F
µ
n
p
W
dBm sec
°CA
MULT
xDIV
÷
MODES
MORE
5520A
CALIBRATOR
STBY
HI
LO
TRIG
GUARD
TC
20A
NORMAL AUX SCOPE
OUT
V, , ,RTD A, -SENSE, AUX V
20V PK MAX
20V PK MAX
10 13 14 11 12
18 17 16192021 15
oe03f.eps
JN
During error mode operation, establishes the
present output value as a new reference for
meter error computation.
KS
Displays the setup menu in the control display.
Setup options can be selected using the
softkeys.
LR
Aborts the current operating state of the
5520A and returns it to the power-up default
state, except during remote control.
MG
Clears a partially completed keypad entry from
the Control Display.

15
Front Panel (cont)
NLeW
Provides step adjustments of the magnitude of
the output signal.
OTurns the power on and off. The switch is a
latching push-push type.
Pm
Selects the pressure measurement function.
QD
Changes the output to 1/10 the reference
value (not necessarily the present output
value).
RX
Changes the output to 10x the reference value
(not necessarily the present output value).
SU
Enables the thermocouple (TC) input
connection and causes the 5520A to compute
a temperature based on the input.
TVAQHFC
Select the Calibrator function. Some keys
select a second function using b.
UcKM
Select output value multipliers. Some keys
select an alternate multiplier using b.

16
Front Panel (cont)
.
POWER
I
O
0•
123
456
789
ENTER
M
k
mVHz
FIELD
EDIT
/
+
F
OPR EARTH SCOPE EXGRD MENU
PREV
SHIFT
RESET
CE
SETUP
REF
NEW
TC
MEAS
°F
µ
n
p
W
dBm sec
°CA
MULT
x
DIV
÷
5520A
CALIBRATOR
STBY
HI
LO
TRIG
GUARD
TC
20A
NORMAL AUX SCOPE
OUT
V, , ,RTD A, -SENSE, AUX V
20V PK MAX
20V PK MAX
29
26 25 23 22
24
27
MODES
MORE
31 28
30
32
oe04f.eps
VE
Loads a newly entered output value shown on
the Control Display into the Calibrator, which
appears on the Output Display.
Wb
Selects alternate functions of the units keys
and alternate multipliers of the multiplier keys.
XNumeric Keypad
Used to enter the digits of the output
amplitude and frequency
YI
Changes the polarity of the output for dc
voltage or dc current functions.
ZSCOPE TRIG
The output connector for triggering an
oscilloscope during oscilloscope calibration.

17
Front Panel (cont)
27 SCOPE OUT
The output connector for oscilloscope
calibration.
28
TC
The input/output jack for thermocouple
simulation during temperature meter
calibration, and thermocouple measurements.
29
20A
The high terminal for sourcing the high current
range (3A to 20A).
30
AUX
The source of ac and dc current outputs, the
second voltage output in dual voltage modes,
and ohms sense for two-wire and four-wire
compensated resistance and capacitance
measurements, and RTD simulation.
31 GUARD
Always internally connected to the internal
guard shield. See GB.
32 NORMAL
The source of ac and dc voltage, ohms and
capacitance outputs, and Resistance
Temperature Detector (RTD) simulation.

18
Rear Panel
.
CALIBRATION
ENABLE
SERIAL 1
FROM HOST
IEEE-488
IN OUT
/ 63 Hz47 Hz
600VA MAX
FLUKE CORPORATION
MADE IN USA
PATENTS PENDING
NO INTERNAL USER SERVICEABLE
PARTS. REFER SERVICE TO
QUALIFIED SERVICE PERSONNEL
NORMAL
WARNING:
TO AVOID ELECTRIC SHOCK GROUNDING
CONNECTOR IN POWER CORD MUST BE CONNECTED
FUSE
CAUTION FOR FIRE PROTECTION REPLACE ONLY
WITH A 250V FUSE OF INDICATED RATING
MAINS SUPPLY
100V/120V
220V/240V T5.0A 250V
(SB)
T2.5A 250V (SB)
CHASSIS
GROUND
SERIAL 2
TO UUT
10 MHz
MAX
5V P - P
WARNING: TO AVOID PHYSICAL INJURY, INSURE THAT THE FILTER
IS PROPERLY INSTALLED BEFORE ENERGIZING INSTRUMENT
TO CLEAN THE FILTER:
-UNPLUG INSTRUMENT
-REMOVE FILTER
-FLUSH WITH SOAPY WATER
-DRY BEFORE REINSTALLATION
INSTALLED
OPTIONS
- SC300
- SC600
12
7 5
6
8
34
o305f.eps
AThe fan filter covers the air intake to keep dust
and debris out of the chassis air baffles.
BCALIBRATION NORMAL/ENABLE
Switch that enables or disables the ability to
write to the nonvolatile memory that stores
calibration constants.
CSERIAL 2 TO UUT
Connector used for transmitting/receiving
serial data between the Calibrator and a Unit
Under Test (UUT). This is also the connector
for Fluke 700 Series Pressure Modules.
DSERIAL 1 FROM HOST
Connector used for remote control of the
Calibrator with a host, printer, or terminal.