Keithley Instruments, Inc. warrants this product to be free from defects in material and workmanship for a period of 1 year
from date of shipment.
Keithley Instruments, Inc. warrants the following items for 90 days from the date of shipment: probes, cables, rechargeable
batteries, diskettes, and documentation.
During the warranty period, we will, at our option, either repair or replace any product that proves to be defective.
To exercise this warranty, write or call your local Keithley representative, or contact Keithley headquarters in Cleveland, Ohio.
You will be given prompt assistance and return instructions. Send the product, transportation prepaid, to the indicated service
facility. Repairs will be made and the product returned, transportation prepaid. Repaired or replaced products are warranted for
the balance of the original warranty period, or at least 90 days.
LIMITATION OF WARRANTY
This warranty does not apply to defects resulting from product modification without Keithley’s express written consent, or
misuse of any product or part. This warranty also does not apply to fuses, software, non-rechargeable batteries, damage from
battery leakage, or problems arising from normal wear or failure to follow instructions.
THIS WARRANTY IS IN LIEU OF ALL OTHER WARRANTIES, EXPRESSED OR IMPLIED, INCLUDING ANY
IMPLIED WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR USE. THE REMEDIES PROVIDED HEREIN ARE BUYER’S SOLE AND EXCLUSIVE REMEDIES.
NEITHER KEITHLEY INSTRUMENTS, INC. NOR ANY OF ITS EMPLOYEES SHALL BE LIABLE FOR ANY DIRECT,
INDIRECT, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE USE OF ITS
INSTRUMENTS AND SOFTWARE EVEN IF KEITHLEY INSTRUMENTS, INC., HAS BEEN ADVISED IN ADVANCE
OF THE POSSIBILITY OF SUCH DAMAGES. SUCH EXCLUDED DAMAGES SHALL INCLUDE, BUT ARE NOT LIMITED TO: COSTS OF REMOVAL AND INSTALLATION, LOSSES SUSTAINED AS THE RESULT OF INJURY TO ANY
PERSON, OR DAMAGE TO PROPERTY.
The following safety precautions should be noted before using the Model 5909 calibration sources.
These sources are intended for use by qualified personnel who recognize possible shock hazards and
are familiar with the safety precautions necessary to avoid possible injury. Carefully read over the manual
supplied with the instrument being calibrated before operation.
Excercise extreme caution when a shock hazard is present in the circuit. The American National Standards
Institute (ANSI) states that a shock hazard exists when voltage levels greater than 30V RMS (42.4V peak)
are present. A good safety practice is to assume that hazardous voltages are present in any unknown
circuit before measurement.
Do not exceed 30V RMS (42.4V peak) between instrument analog common and earth ground.
Inspect test leads or connecting cables before each use. Replace defective cables with those of equivalent
voltage rating.
For maximum safety, do not touch exposed test leads or the instrument while power is applied to the
circuit under test. Turn off the power and discharge all capacitors before connecting or disconnecting
the instrument.
Do not touch any object which could provide a current path to the common side of the circuit under
test or power line (earth) ground. Always make measurements with dry hands while standing on a
dry, insulated surface capable of withstanding the voltage being measured.
Do not exceed the instrument’s maximum allowable input as defined in the instruction manual for the
unit.
Safety Precautions
The following safety precautions should be observed before using
this product and any associated instrumentation. Although some instruments and accessories would normally be used with non-hazardous voltages, there are situations where hazardous conditions
may be present.
This product is intended for use by qualified personnel who recognize shock hazards and are familiar with the safety precautions required to avoid possible injury. Read and follow all installation,
operation, and maintenance information carefully before using the
product. Refer to the manual for complete product specifications.
If the product is used in a manner not specified, the protection provided by the product may be impaired.
The types of product users are:
Responsible body is the individual or group responsible for the use
and maintenance of equipment, for ensuring that the equipment is
operated within its specifications and operating limits, and for ensuring that operators are adequately trained.
Operators use the product for its intended function. They must be
trained in electrical safety procedures and proper use of the instrument. They must be protected from electric shock and contact with
hazardous live circuits.
Maintenance personnel perform routine procedures on the product
to keep it operating properly, for example, setting the line voltage
or replacing consumable materials. Maintenance procedures are described in the manual. The procedures explicitly state if the operator
may perform them. Otherwise, they should be performed only by
service personnel.
Service personnel are trained to work on live circuits, and perform
safe installations and repairs of products. Only properly trained service personnel may perform installation and service procedures.
Keithley products are designed for use with electrical signals that
are rated Installation Category I and Installation Category II, as described in the International Electrotechnical Commission (IEC)
Standard IEC 60664. Most measurement, control, and data I/O signals are Installation Category I and must not be directly connected
to mains voltage or to voltage sources with high transient over-voltages. Installation Category II connections require protection for
high transient over-voltages often associated with local AC mains
connections. Assume all measurement, control, and data I/O connections are for connection to Category I sources unless otherwise
marked or described in the Manual.
Exercise extreme caution when a shock hazard is present. Lethal
voltage may be present on cable connector jacks or test fixtures. The
American National Standards Institute (ANSI) states that a shock
hazard exists when voltage levels greater than 30V RMS, 42.4V
peak, or 60VDC are present. A good safety practice is to expect
that hazardous voltage is present in any unknown circuit before
measuring.
Operators of this product must be protected from electric shock at
all times. The responsible body must ensure that operators are prevented access and/or insulated from every connection point. In
some cases, connections must be exposed to potential human contact. Product operators in these circumstances must be trained to
protect themselves from the risk of electric shock. If the circuit is
capable of operating at or above 1000 volts, no conductive part of
the circuit may be exposed.
Do not connect switching cards directly to unlimited power circuits.
They are intended to be used with impedance limited sources.
NEVER connect switching cards directly to AC mains. When connecting sources to switching cards, install protective devices to limit fault current and voltage to the card.
Before operating an instrument, make sure the line cord is connected to a properly grounded power receptacle. Inspect the connecting
cables, test leads, and jumpers for possible wear, cracks, or breaks
before each use.
When installing equipment where access to the main power cord is
restricted, such as rack mounting, a separate main input power disconnect device must be provided, in close proximity to the equipment and within easy reach of the operator.
For maximum safety, do not touch the product, test cables, or any
other instruments while power is applied to the circuit under test.
ALWAYS remove power from the entire test system and discharge
any capacitors before: connecting or disconnecting cables or jumpers, installing or removing switching cards, or making internal
changes, such as installing or removing jumpers.
Do not touch any object that could provide a current path to the common side of the circuit under test or power line (earth) ground. Always
make measurements with dry hands while standing on a dry, insulated
surface capable of withstanding the voltage being measured.
The instrument and accessories must be used in accordance with its
specifications and operating instructions or the safety of the equipment may be impaired.
Do not exceed the maximum signal levels of the instruments and accessories, as defined in the specifications and operating information, and as shown on the instrument or test fixture panels, or
switching card.
When fuses are used in a product, replace with same type and rating
for continued protection against fire hazard.
Chassis connections must only be used as shield connections for
measuring circuits, NOT as safety earth ground connections.
If you are using a test fixture, keep the lid closed while power is applied to the device under test. Safe operation requires the use of a
lid interlock.
5/02
If or is present, connect it to safety earth ground using the
wire recommended in the user documentation.
!
The symbol on an instrument indicates that the user should refer to the operating instructions located in the manual.
The symbol on an instrument shows that it can source or measure 1000 volts or more, including the combined effect of normal
and common mode voltages. Use standard safety precautions to
avoid personal contact with these voltages.
The WARNING heading in a manual explains dangers that might
result in personal injury or death. Always read the associated information very carefully before performing the indicated procedure.
The CAUTION heading in a manual explains hazards that could
damage the instrument. Such damage may invalidate the warranty.
Instrumentation and accessories shall not be connected to humans.
Before performing any maintenance, disconnect the line cord and
all test cables.
To maintain protection from electric shock and fire, replacement
components in mains circuits, including the power transformer, test
leads, and input jacks, must be purchased from Keithley Instruments. Standard fuses, with applicable national safety approvals,
may be used if the rating and type are the same. Other components
that are not safety related may be purchased from other suppliers as
long as they are equivalent to the original component. (Note that selected parts should be purchased only through Keithley Instruments
to maintain accuracy and functionality of the product.) If you are
unsure about the applicability of a replacement component, call a
Keithley Instruments office for information.
To clean an instrument, use a damp cloth or mild, water based
cleaner. Clean the exterior of the instrument only. Do not apply
cleaner directly to the instrument or allow liquids to enter or spill
on the instrument. Products that consist of a circuit board with no
case or chassis (e.g., data acquisition board for installation into a
computer) should never require cleaning if handled according to instructions. If the board becomes contaminated and operation is affected, the board should be returned to the factory for proper
cleaning/servicing.
SPECIFICATIONS
ACCURACY, 23’ iZ°C
24 HOURS
VALUE DC - 100 kHz 1 MHz DC - 100 kHz 1 MHz
1.8 nF 465
470 pF 375
180 pF 375
47 pF 375 ppm 30 PPm 550 ppm 555 ppm
‘ACCURACY: Typical accuracies far >90 days from calibration:
Add 350ppm x \iyeaE to 24 hour capacitance specifications.
Add 150ppm x JyZ~to 24 hour conductance specifications.
Spectficatians subject to change without notice
PPm
ppm
ppm
645
PPm
420
ppm
390 ppm 550 ppm 565 ppm
90 DAYS*
640
PPm
550 ppm 595 ppm
820 ppm
GENERAL
CAPAClTANCE FROM EITHER TERMINAL TO CASE: 3.5pF maximum.
TEMPERATURE COEFFICIENT OF DIRECT CAPACITANCE (0”~WC):
+14Oppml”C typical.
MAXIMUM VOLTAGE: f300V.
INSULATION RESISTANCE (terminal to terminal or case):
lO”fl minimum (l&F, 470pF)
1OW minimum (1SOpF or less).
TERMINALS: Two male SNC push-on connectors spaced on l-inch
centers.
OPERATING ENVIRONMENT: 0’ to 50°C; 0% to 70% relative humtdity
up to 35°C.
STORAGE ENVIRONMENT: -25’C to +65”C.
DIMENSIONS, WRIGHTS: Each calibration source is 35mm x 57mm x
44mm (1.38 in. x 2.25 in. x 1.75 in.). Carrying case with calibration
sources is 24Smm x 165mm x 73mm (9.75 in. x 6.50 in. x 2.88 in.).
Net weight 1.3kg (2 Ibs. 14 oz.).
Table of Contents
SECTION l-GENERAL INFORMATION
1.1
1.2
1.3
1.4
1.5
1.6
1.7
1.8
INTRODUCTION ..............................
WARRANTY INFORMATION. ...................
b L4NUAL ADDENDA ..........................
AFETY SYMBOLS AND TERMS ................
UNPACKING AND iNSPECTiON ..........................................
This section contains general information concerning the
Model 5909 Calibration Sources. The Model 5909 is intended to cable correct the Package 82 Simultaneous CV
system.
1.2 WARRANTY INFORMATION
Warranty information may be found on the inside front
cover of this manual. Should you require warranty service,
contact the Keithley representative or authorized repair
facility in your area for further information.
1.3 MANUAL ADDENDA
Any improvements or changes concerning the sources or
this manual will be explained on an addendum included
with the sources. Please be sure to note these changes and
incorporate them into the manual before using the sources.
1.4 SAFETY SYMBOLS AND TERMS
The following safety symbols and terms may be found on
the instrument or used in this manual.
The symbol
voltage may be present on the terminal(s). Use standard
safety practices to avoid personal contact with these
voltages.
on an instrument shows that high
N
The CAUTION heading used in this manual explains hazards that could damage the unit. Such damage may void
the warranty.
1.5 SPECIFICATIONS
Detailed specifications for the Model 5909 sources may be
found at the front of this manual.
1.6 UNPACKING AND INSPECTION
Upon receiving the Calibration Sources carefully unpack
them from their shipping carton and inspect all sources
for any obvious signs of physical damage. Repolt any
damage to the shipping agent immediately. Save the
original packing carton for possible future reshipment.
The following items are included with every order:
l Model 5909 Calibration Sources (see Table l-1).
l Supplied accessories (Table l-l).
l A copy of this instruction manual.
l Additional accessories as ordered.
If an additional instruction manual is required, order the
manual package (Keithley Part Number 5909-901-00). The
manual package includes an instruction manual and any
appbcable addenda.
1.7 REPACKING FOR SHIPMENT
The symbol
should refer to the operating instructions.
The WARNING heading used in this manual explains hazards the might result in personal injury or death. Always
read the associated information very carefully before performing the indicated procedure.
on the instrument indicates that the user
A
Should it become necessary to rehlm the sources, carefully
pack them in the original packing carton or its equivalent.
Be sure to include the following:
l Advise as to the warranty status.
l Write ATTENTION REPAIR DEPARTMENT on the ship-
ping label.
l Fill out and include the service form at the back of this
manual.
l-l
1.6 USING THE SOURCES
Table l-l. Supplied Items
The Model 5909 Sources are intended for use in cable correcting the Package 82 Simultaneous CV System. Refer to
Section 3 of the Package 82 Instruction Manual for infor-
This section discusses important mechanical and elect&al
design considerations and calibration methods for the
calibration sources.
2.2 MECHANICAL DESIGN CONSIDERATIONS
2.2.1 Dielectric
Glass dielectric capacitors are used for the sources because
of several desirable characteristics when compared to other
dielectric types. Key important characteristics of the glass
capacitor include:
l No noticable frequency-dependent dielectric constant
changes.
l Better time stability than all other dielectrics with the
possible exception of air capacitors.
l Dissipation factor sufficiently low to allow use with the
Model 590.
l Stable and repeatable temperature coefficient.
l High DC insulation resistance allowing use with the
Model 595.
capacitor is suspended as far as possible from the sides
of the case. For the larger capacitor values only, the
capacitor is glued to a glass standoff so that impacts and
vibration will not cause the capacitor to move, thus preventing changes in shunt capacitance. The standoff has sufficient length and small enough cross sectional area so that
it does not contribute to the shunt capacitance, and it also
results in a very high DC resistance to ground. To further
improve DC resistance to ground, care is taken during
assembly not to get a pathway of adhesive, either between
the two capacitor terminals, or between either terminal and
guard.
GLASS GAPACiTOR
(LARGER “AMES ONLY, (LARGER “AMES ONLY,
TEFLON - iNSULATED
BNC CONNECTORS
2.2.2 Connectors
The BNC connectors were chosen to allow quick and easy
connection of the source to the front panel of the Model
590. The connectors have Teflon@ insulation for high
leakage resistance, and they are specified for use at frequencies as high as 4GHz. The 4GHz specification indicates that both the shunt capacitance and the series inductance are carefully controlled during the manufacturing process, resulting in low SWR for optimum highfrequency operation.
2.2.3 Case Constructlon
The capacitor is internally mounted between the two BNC
connectors, as shown in Figure 2-l. To minimize the capacitance to guard (the metal case acts as the guard), the
Figure 2-1. Capacitance Some Construction
2.2.4 Series Inductance
The series inductance is the principle error term, and it
is minimized by placing the capacitor directly behveen the
ends of the BNC connectors. The lead length, and thus
the series inductance, is made as small as possible.
2.3 CAPACITANCE SOURCE CALIBRATION
The capacitance sources are designed to be characterizable
at frequencies up to 1MHz. However, since no direct
measurement method known provides the required
measurement accuracy to lMHz, the method discussed in
2-l
DESIGN CONSIDERATIONS
the following paragraphs was developed to transfer a traceable calibration of these sources at 1kHz to higher frequencies by analyzing any effects which could alter the capacitance reading at higher frequencies. This method is similar
to the method described in the reference’ at the end of this
section.
2.3.1 High Frequency Circuit Model
As shown in Figure 2-2, the capacitor in the metal box can
be modeled as an ideal capacitor (C,) whose value is the
measured 1kHz value in series with an inductor (L) representing the inductance of the capacitor, capacitor leads,
and BNC connectors. Any shunt capacitance between this
network and guard is ignored by the capacitance meter,
which makes a guarded measurement.
To obtain the effective capacitance at a given high frequen-
cy, the value of the reactance of C, and L are computed
at fhat frequency and then added together (keeping in
mind that capacitance reactance is negative, and inductive
reactance is positive). The resulting reactance is then converted back to an equivalent capacitance at the 1OOkHz or
lMHz frequency of interest.
The value for L includes the inductance in the BNC con-
nectors up to some reference point on the BNC connector
pins. If a different point on the connector pins is chosen,
the effective capacitance will be different because L will
have a different value.
2.3.2 Calibration Method
The two measurements necessary to calibrate each
capacitance source include the lkHz capacitance, and the
series inductance.
lkHz Capacitance Measurement
The lkHz capacitance is measured in a conventional manner by a precision capacitance bridge utilizing a 3-terminal
guarded measurement. Temperature of the capacitance
source is accurately monitored during the measurement
so that an accurate determination of the temperature can
be made. This temperature measurement is necessary
because the capacitor has a sufficiently high temperature
coefficient to degrade the accuracy of the ultimate user’s
measurements unless correction is made for changes in
capacitance due to temperature variations. Any uncertainty
in temperature at the time of source calibration enters into the total uncertainty of the capacitance value.
Series Inductance Measurement
The series inductance is somewhat more difficult to
measure than the lkHz capacitance. The method consists
of making a resonant circuit of the capacitor and its series
inductance by shorting the external terminals together, as
shown in Figure 2-3. Assuming that the lkHz capacitance
value is the same as the capacitance at the resonant frequency, the series inductance can then be calculated from
those two factors.
,_________-_--____________1
GUARD (GROUNDED)
Figure 2-2. High Frequency Model
2-2
For optimum accuracy, it is necessary to subtract the induc-
I
tance of the shorting bar from the series inductance of the
resonant circuit to obtain the true series inductance of the
capacitance source. For that reason, a precision shorting
bar is used. This bar has a known inductance, and it also
contacts the connecting terminals at the same point each
time it is attached minimizing variations.
The resonant frequency is measured by placing a coupling
coil close to the shorting bar and looking for a dip in the
impedance across the coupling coil with a network
analyzer. The dip indicates that the resonant circuit is extracting energy from the coupling coil at the point of
I
resonance.
DESIGN CONSIDERATIONS
r-----------,
I
A. SHORTING SERIES 8. EQUIVALENT PARALLEL
L AND C. RESONANT CIRCUIT
bl
I
I c
,------- -------,
Figure 2-3. Shorting L and C Form Parallel Resonant Circuit
References
I Jones, R.N., Evaluation of Three-Terminal and Fou$Terminal Pair Capacitors at High Frequencies, Nat.
This section contains procedures for characterizing the
Model 5909 capacitance sources. Recommended equipment and environmental conditions are also discussed.
3.2 RECOMMENDED EQUIPMENT
Table 3-l summarizes the equipment recommended to
characterize the sources to the accuracy given in the specifications at the front of this manual. In order to maintain
that accuracy, the specifications for any substitute equipment must be at least as good as those given in Table 3-l.
Also, it is important that the test equipment be calibrated
to NBS traceable standards.
3.3 ENVIRONMENTAL CONDITIONS
Source characterization should be done under laboratory
conditions with an ambient temperature of 23’ fl°C and
at a relative humidity of less than 70%.
3.4 TEMPERATURE STABILIZATION
Before characterization, allow the sources to stabilize in a
free air environment at the ambient temperature for at least
four hours.
NOTE
Do not handle a source for more than one minute
at any any given time to avoid inaccurate characterization caused by temperature rise. Typically, it
takes 20 minutes for a source to stabilize to rated
accuracy after being handled for several minutes.
3.5 WARM UP PERIOD
Before characterization, turn on the test equipment and
allow it to warm up for the period stated in the instruction manual for that equipment.
Table 3-l. Recommended Characterization Equipment
Description Specifications
IkHz Capacitance Bridge 1Oppm (0.001%) accuracy,
0.02ppml”C stability
DMM (RTD temperature) 0.16”C accuracy
(temperature)
4-wire RTD temperature probe 1OOQ !cO.ln platinum RTD,
DIN43760, alpha 0.00385
or 0.00392
Manufachwer and
Model Application
Andeen-Hagerling Measure lkHz capacitance
Model 2500 of C source
Keithley Model 193A Measure source tempera-
ture (probe required below)
Omega PR-U-3-100
Measure ambient temperature with Model 193A
3-l
CHARACTERIZATION
3.6 CAPACITANCE SOURCE
CHARACTERIZATION
The following paragraphs discuss the procedure for
measuring the &Hz values of the capacitance sowes. The
factory calibration value for series inductance is used to
calculate the 1OOkHz and IMHz values. The series inductance measurement discussed in paragraph 2.32 is not required for characterization because the value of inductance
does not significantly drift during the life of the sources.
Before performing these procedures, the test equipment
and sources must be temperature stabilized as discussed
in the preceding paragraphs.
3.6.1 Connections
Where possible, the source being characterized should be
connected directly to the &Hz capacitance bridge. If connections must be made through cables, use the type and
maximum length specified by the manufacturer of the
capacitance bridge.
3.6.2 IkHz Capacitance Measurement
Measure the lkHz capacitance of each source as follows:
3.6.3 1OOkHz Capacitance Calculation
Use the lkHz measured value and the inductance marked
on each source to calculate the 100kHz value at 23’C as
follows:
C
Where: C,,, = capacitance at 1OOkHz
After calculating each lOOkHz value, record it in the appropriate space in Table 3-2.
Example: Assume that the measured lkHz value of a
nominal 180pF source is IBlpF, and that the marked series
inductance is 0.0492pH. The M&Hz capacitance at 25°C is:
C,.,,=(ltJlxlO-=) [(25-23)(0.00014) +l]
C,, [(T,-23)(0.00014) +I] [’ + l;;L;k]
som =
Car = capacitance at IkHz (measured)
L = series inductance (marked on each source)
d =(2@ = 3.9478417 x 10”
TA = Ambient temperature during lkHz measure-
ment (“C)
1. Connect the source being characterized to the capaci-
tance bridge.
2. Allow the source to temperature stabilize for at least 10
minutes after handling. Measure the ambient
temperature to within O.K.
3. Measure the lkHz capacitance and record the value in
Table 3-2.
4. Repeats steps 1 through 3 for the remaining capacitance
somces.
(3.947w7xlO”)(o.o49zxlo-~)(lalxlo-’~)
l+
l-((3.947847x10”)(0.0492xlL-6)(181x10-’2))
[
*(IO& = 181.05131 x lo-”
C
C twk = 181.05WpF
1
3-2
Table 3-2. Model 5909 Capacitance Characterization
CHARACTERIZATION
Nominal Measured IkHz
Value
‘Calculated as follows:
C, = C,* [(T,, -23)(0.00014) +l]
Where: C, = Extrapolated 1OOkHz or 1MHz value.
C,, = Measured lkHz capacitance.
o1 = (2sf)’ = 3.9478417 x 10” (100kHz) or 3.9478417 x lOI (lMHz)
L = Series inductance marked on source
T, = Ambient temperature during lkHz measurement (“C)
Capacitance
I
I I
3.6.4 MHz Capacitance Calculation
The lMHz capacitance value at 23’C can be determined
in the same manner as the 1OOkHz value as follows:
Calculated lOOkHz
Capacitance*
Calculated lMHz
Capacitance*
1
(‘+ ,““,f,..)
used. With a measured &Hz capacitance of l81pF and a
marked series inductance of O.O492pH, the lMHz capacitance at 25°C is:
C,.,, = C,, [(T.,-23)(0.00014) +l] b + s,k]
Where: CIM = capacitance at lMHz (calculated)
C,* = capacitance at lkHz (measured)
L = series inductance (marked on each source)
d = (2rf)L = 3.9478417 x 10’3
T, = Ambient temperature during lkHz measure-
ment (“C)
After calculating each 1MHz value, record it in Table 3-2.
Example: Assume the same l80pF (nominal) source is
C,,=(l81 x lO-) [(25-23)(0.00014) +l]
(3.9478417x10’3)(0.0492x10-6)(181x10-’~)
l+
l-((3.9478417x10’5)(0.0492x10-6)(181x10-”))
[
CIM = X31.1144 x lo-”
C,, = l81.1144pF
1
3.6.5 Capacitance Source Calibration Labels
After the IkHz, lOOkHz, and 1MHz capacitance values
have been determined, write the values on the calibration
labels (supplied). Also include other pertinent information such as due date, and place the labels on the source
over the existing labels.
3-3/3-4
SECTION 4
Replaceable Parts
4.1 INTRODUCTION
This section contains information on replaceable parts for
the Model 5909.
4.2 PARTS LIST
Parts for the Model 5909 are listed in Table 4-l. The
capacitance values listed in the table are nominal. Also note
that the part numbers listed for the capacitance sources
are for factory calibrated units.
To place a parts order, or to obtain information concerning replacement parts, contact your Keithley representative
or the factory (see the inside front cover for addresses).
When ordering parts, be sure to include the following
information:
1. Model number (5909).
2. Serial number (where applicable).
3. Part description.
4. Keithley part number.
1 Keithley Part Numbed
*Source values shown are nominal.
*Capacitance source part numbers are for calibrated units.
4-114-2
Service Form
Model No.
Serial No.
Date
Name and Telephone No.
Company
List all control settings, describe problem and check boxes that apply to problem.
Cl Intermittent
0 IEEE failure
B Front panel operational
Display or output (check one)
m Drifts
0 Unstable
u Overload
B Calibration only
0 Data required
(attach any additional sheets as necessary)
Show a block diagram of your measurement system including all instruments connected (whether power is turned on or not).
Also, describe signal source.
0 Analog output follows display
0 Obvious problem on power-up
0 All ranges or functions are bad
0 Unable to zero
0 Will not read applied input
0 Certificate of calibration required
a Particular range or function bad; specify
0 Batteries and fuses are OK
0 Checked all cables
Where is the measurement being performed? (factory, controlled laboratory, out-of-doors, etc.)
What power line voltage is used?
Relative humidity?
Any additional information. (If special modifications have been made by the user, please describe.)
Other?
Ambient temperature?
Specifications are subject to change without notice.
All Keithley trademarks and trade names are the property of Keithley Instruments, Inc.
All other trademarks and trade names are the property of their respective companies.