Fluke Series II Manual
PN 601648
May 1996
© 1996 Fluke Corporation, Inc.
All rights reserved. Printed in U.S.A.
®
5700A/5720A
Series II Multi-Function Calibrator
Operator Guide
1
Contents
What is in this Guide? ................................ 2
Safety Summary......................................... 2
PFuse and Line Voltage .......................... 4
Basic Operation.......................................... 5
A Short Calibration Exercise....................... 5
Warming up the Calibrator ..................... 5
Exercise: Running dc Zero Calibration........ 6
Connecting a Meter................................ 6
Applying a dc Voltage ............................ 7
Checking the Calibrator Uncertainty....... 7
Exercise: Activating Error Mode ............. 8
Checking the Meter’s Higher and Lower
Ranges..................................... 8
Exercise: Applying an ac Voltage........... 9
Front Panel Features.................................. 10
Output Display (Left Side)...................... 10
Control Display (Right Side)................... 10
Display Screen Saver............................. 11
Front Panel Keys ................................... 12
Front Panel Connectors ......................... 21
Rear Panel Features .................................. 23
Rear Panel Connectors.......................... 23
Switches and Fuse Holder...................... 26
Cable Recommendations............................ 27
Connecting to a UUT (Unit Under Test) ...... 28
Using Error Mode....................................... 35
Operating in Remote .................................. 37
RS-232-C Interface Parameters.................. 38
2
What is in this Guide?
The
Operator Guide
begins with safety
information, a short meter calibration exercise for
new users, then continues with a condensation of
information from the
Operator Manual
. For
complete information about the Calibrator’s
features, functions, and operating procedures,
refer to the
Operator Manual
.
Safety Summary
Warning
[
Lethal voltage may be present on the
terminals. Observe all safety
precautions in this guide.
To avoid electrical shock hazard, the operator
should not electrically contact the OUTPUT HI or
SENSE HI binding posts. During operation, lethal
voltages of up to 1100V ac or dc may be present
on these terminals.
Whenever possible, keep one hand away from the
equipment to reduce the hazard of current flowing
through vital organs of the body.
Symbols Marked on Equipment
[Warning - Risk of electric shock.
QGround Protective ground (earth) terminal.
PAttention Refer to the manual for
information about this feature. This symbol
appears on the rear panel ground terminal
and by the fuse holder.
Use the Proper Fuse
To avoid fire hazard, use only the fuse specified
on the line voltage selection switch label.
3
Safety Summary (cont.)
[Grounding the Calibrator
The Calibrator is a Safety Class I (grounded
enclosure) instrument. The enclosure is grounded
through the grounding conductor of the power
cord. To avoid electrical shock, plug the power
cord into a properly wired earth grounded
receptacle before making any connections to the
Calibrator terminals. A protective ground
connection by way of the grounding conductor in
the power cord is essential for safe operation.
[Do Not Remove the Cover
To avoid personal injury, do not remove the
Calibrator cover. Do not operate the Calibrator
without the cover properly installed. There are no
user-serviceable parts inside the Calibrator, so
there is no need to ever remove the cover.
4
P
Fuse and Line Voltage
The correct fuse type for each voltage selection is
indicated on the rear panel as shown in the
following figure.
VOLTAGE
SELECTION FUSE-F1
T 125A
250V
(SB)
100V S2 S3 S4
110V
115V
120V
VOLTAGE
SELECTION FUSE-F1
T 125A
250V
(SB)
200V S2 S3 S4
220V
230V
240V
CAUTION
FOR FIRE PROTECTION REPLACE ONLY
WITH A 250V FUSE OF INDICATED RATING.
VOLTAGE
SELECTION FUSE-F1
T 125A
250V
(SB)
100V S2 S3 S4
110V
115V
120V
VOLTAGE
SELECTION FUSE-F1
T 125A
250V
(SB)
200V S2 S3 S4
220V
230V
240V
CAUTION
FOR FIRE PROTECTION REPLACE ONLY
WITH A 250V FUSE OF INDICATED RATING.
Line Power Label and Switch Locations
5
Basic Operation
To set the output, simply press the following
sequence of keys to select an output function and
amplitude:
[numeric keys] [multiplier] [function] E O
For example, to set the output to 10 mV dc, press:
1 0 m V E O
To set an ac output, press the following additional
keys:
[numeric keys] [multiplier] H E
For example, to change the present 10 mV dc to
10 mV ac @ 1.8 kHz, press:
1 . 8 K H E
To change the output back to dc, press:
0 H E
or
+ E
A Short Calibration Exercise
If you are not familiar with the Calibrator, you will
find that the following exercise quickly teaches you
some important front panel operations.
Warming up the Calibrator
When you first turn the Calibrator on, you should
let it warm up for 30 minutes. This ensures that the
Calibrator meets or exceeds its specifications.
6
Exercise: Running dc Zero Calibration
DC Zero is a brief internal process that removes
offset errors. The specifications require that you
run dc Zero at least every 30 days.
To run dc Zero, press the following sequence of
softkeys:
Setup Menus Cal Zero
Press any key, then press Ptwice to return to
normal operation.
Connecting a Meter
Typical connections for handheld and benchtop
meters are shown on the next page. The diagrams
show the use of Fluke Model 5440-7002 Low
Thermal Cables. Other types of cable may be used
for this exercise. To connect either type of meter,
proceed as follows:
1. Verify that the Calibrator is on, and is in
standby mode (STANDBY indicator lit). If the
Calibrator is not in standby, press r.
2. Set the meter to the lowest range that reads
10V dc.
3. Connect the shield lead (if your cables are
shielded) to V GUARD on the Calibrator.
4. Verify that both Xand xare off. Press
them if they are lit.
5. Connect the meter input LO to the Calibrator
OUTPUT LO.
6. Connect the meter input HI to the Calibrator
OUTPUT HI.
7
Exercise: Connecting a Meter (cont.)
HI HI
LO LO
HI
AUX
CURRENT GUARD GROUND
WIDEBAND
Calibrator
10A
300mA
V
COM
DMM
NC
EX SNS : OFF EX GRD : OFF
OUTPUT
V A
ΩSENSE
V
Ω
Ω
HI HI
LO LO
HI
OUTPUT
V A SENSE
V
AUX
CURRENT
GUARDGROUND
WIDEBAND
Calibrator
DMM
INPUT
NC
EX SNS
: OFF
EX GRD
: OFF
ΩΩ
Applying a dc Voltage
Apply 10V dc to the meter by pressing the
following sequence of keys:
10VEO
Checking the Calibrator Uncertainty
Press s. The total uncertainty for the 10V you
are applying to the meter is displayed on the
Control Display (the large dot-matrix display on the
right side of the front panel). This number depends
on the setting of the calibration cycle and
specification confidence level in a setup menu.
Press Pto clear the uncertainty display.
8
Exercise: Activating Error Mode
Chances are the meter reads something other than
exactly 10V. To quickly check the error of the
meter, turn the rotary knob to obtain a meter
reading of exactly 10V, and read the error off the
Control Display.
Turning the knob is all it takes to activate error
mode. When you turn the knob, the least
significant digit is highlighted. This digit changes
as you turn the knob. To change a higher order
digit, thereby speeding up the adjustment rate,
press <.
The error on the Control Display is a combination
of offset, scale, and linearity errors. You can view
component parts of the error by pressing oand
S.
Checking the Meter’s Higher and Lower Ranges
To check the meter error at 100V dc, first set the
meter range (if applicable) to the lowest range that
reads 100V. Press YO. This sets a new
reference equal to ten times the previous
reference of 10V dc. (Pressing Owas necessary
because the Calibrator goes into standby when it
crosses the safety threshold from below 22V to
over 22V.) Turn the rotary knob to re-activate error
mode and determine the meter error at 100V.
Now press ZZ. Set the meter range switch (if
applicable) to the lowest range that reads 1V.
To end the error mode session, press E.
This recalls the reference value and exits error
mode.
Press rto set the output to 0 mV dc in standby.
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5
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