HP 41951A Quick start guide

Model Number:
HP 41951A
Date Printed:
November, 1987
Part Number:
41951-90000
This supplement contains information for correcting manual errors and for adapting the manual to newer instruments that contain improvements
or modifications not documented in the existing manual.
To use this supplement
1. Make all ERRATA corrections
2. Make all appropriate serial-number-relaled changes listed below
SERIAL PREFIX OR NUMBER MAKE MANUAL CHANGES SERIAL PREFIX OR NUMBER MAKE MANUAL CHANGES
I*" New Item
ERRATA
^ Page 1-3, Table 1-2. Contents
Change the part number of item 1, Impedance Test Adapter, to 41951-61001.
Page 1-6, Figure 1-3. Impedance Measurement Accuracy
Change the chart's inductance axis lOfH and lOOfH scale labels to lOpH and 10GpH,
respectively.
NOTE
Manual change supplements are revised as often as necessary to keep manuals as current and accurate as possible. Hewlett-Packard recommends
that you periodically request the latest edition of this supplement. Free copies are available from alt HP offices. When requesting copies, quote
the manual Identification information from your suppiement, or the model number and print date from the title page of the manual.
Date/Div: February, 1989/33
Page: 1 of 1
m
HEWLETT
PACKARD
PHINTED IN JAPAN

CHANGE 1
Page 6-6, Table 6-3. Replaceable Parts
Change item 5 as follows.
Reference
Designator
HP Part Number
Qty.
Description
5
1250-1811
3
N(f)-SMA(f) Adapter (with NUT)
2190-0054 3
Washer
2

IMPEDANCE TEST KIT
SERIAL NUMBERS
This operation note applies directly to 41 9 5 1 As with 97 Aa 1 ^
serial numbers. ^lyoiAs with 2746J- prefixed
© COPYRIGHT: YOKOGAWA-HEWLETT'PACKARD LTD iqft 7
9-1, TAKAKURA-CHO, HACHIOJI-SHI, TOKYO JAPAN
Manual Part No. 41951-90000
Microfiche Part No. 41951-90050
Printed: Nov. 1987

TABLE OF CONTENTS
Section
Title
]. general information
1-1. introduction
1-2 description
SPEClFiCATiONS
i 4 SAFETY CONSIDERATIONS
1-5. UNITS COVERED BY THIS MANUAL
1 - 6 . CONTENTS
1- 7. ACCESSORIES AVAILABLE
2. INSTALLATION
2- 1 . INTRODUCTION
2-2. INITIAL INSPECTION
2-3. interconnections
2-4. STORAGE ENVIRONMENT
2-5. PACKING
3. OPERATION
3-1. INTRODUCTION
3-2. BLOCK DIAGRAM
2 3 APC-7 CONNECTOR
It rAstTErN?otL^=ON CONS,DERATION
“l-T One Port Full Calibration
3-5-2. Pof^ Extension
3-5-3. OUTPUT IMPEDANCE
3-6. TEST SIGNAL LEVEL AND OU I t-u i
3_7, DC BIAS
3 - 7-1. internal DC Bias
3„7.2. External DC Bias
4. VERIINCATION TLST
4_1 INTRODUCTION
4 2 EQUIPMENT REQUIRED
4-3'. CALIBRATION CYCLE
4-4. DC PATH CHECK
RF PATH CHECK
5. manualchangls
5-1. INTRODUCTION
5-2. MANUAL CHANGES
6. SERVICE
6-1 INTRODUCTION
6-2. SCHEMATICS AND
REPLACEABLE PARTS
Page
1-1
1-1
1-1
1-1
1-2
1-3
1-3
2-1
2-1
2-1
2-2
2-2
3-1
3-1
3-1
3-2
3-2
3-2
3-3
3-3
3-4
3-5
3-5
3-5
4-1
4-1
4-1
4-2
4-3
5-1
5-1
6-1
6-1

GENERA L IN FORM A TION
SECTION I
GENERA L IN FORM A TION
1-1. INTRODUCTION
This operation note provides the information necessary to use the HP 41951A Impedance
Test Kit \A/ith the HP4195A Netv\/ork/Spectrum Analyzer. Refer to the 4195A’s Operation
Manual for specific 4195A operating procedures.
1-2. DESCRIPTION
The 41951A Impedance Test Kit is an accessory for the 4195A. Figure 1-1 shows the con¬
tents of the HP 41951 A.
Figure 1-1. Contents of HP 41951A
1-3. SPECIFICATIONS
The specifications for the 41951A Impedance Test Kit is listed in Table 1-1. The specifica¬
tions are performance standards or limits. The 41951A meets all of the specifications listed
in Table 1-1 when shipped from the factory.
1-4. SAFETY CONSIDERATIONS
The 41951A Impedance Test Kit conform to the safety requirements for lEC 348, and CSA
556B instruments, and is shipped from the factory in a safe condition. This operation note
contains information, CAUTIONS, and WARNINGS which must be followed by the user to
ensure safe operation.
1-1

GENERAL INFORMATION
1-5. UMITS COVERED BY THIS OPERATION NOTE
Hewlett-Packard uses a two-part, nine character serial number which is stamped on the
serial number plate (see Figure 1-2 ) attached to the inside of the carrying case. The first
four digits and a letter are the prefix and the last five digits are the suffix of the serial num¬
ber. The letter in the serial number identifies the country where the instrument was man¬
ufactured. The prefix is same for all identical instruments, it changes only when a change is
made to the instrument. The suffix, however, is assigned sequentially and is different for
each instrument. This operation note applies to instruments with serial number prefixes
listed under Serial Numbers on the title page.
SERIAL NO.
Figure 1-2. Serial Number Plate
Units manufactured after this operation note was printed may have a serial number prefix
which is not listed on the title page. An unlisted serial number prefix indicates that the in¬
strument may be different from those described in this operation note. Operation notes for
new Instruments may be accompanied by a yellow Manual Changes supplement page, or
have a different part number. This supplement contains "Change information" explaining
how to adapt this operation note to newer instruments.
In addition to change information, the supplement may contain information for correcting
errors ( Errata) in previous operation notes. To keep this operation note as current and
accurate as possible, Hewlett-Packard recommends that you periodically request the latest
Manual Change supplements. The supplement for this operation note is identified by the
Print Date and Part Number, both of which appear on the operation note's title page.
For information concerning the serial number prefixes not listed on the title page or in the
Manual Change supplements, contact your nearest Hewlett-Packard Sales office.
1-2

GENERAL INFORMATION
1~6. COMTENTS
Table 1-2 lists the contents, and includes No. which are the same as the designation in
Figure 1-1, Description, Qty. ( Quantity ), and HP part number.
Table 1-2, Contents
1
1
mn
HP Part Number
1
Impedance Test Adapter
1
PN 41951-69001
2 1 PN 04191-85300
3
50 n Calibration Standard
1
PN 04191-85301
4
OS Calibration Standard
1 PN 04191-85302
5 N(m)-N(m) Cable
1
PN 41951-61602
6 N(m)-N(m) Adapter 2 PN 1250-0778
7 BNC(m)-BNC(m) Cable 1
PN 8120-1839
Carrying case
1
PN 41951-60001 "
Note The serial number plate is not included in the carrying case.
1-7. AVAILABLE ACCESSOBIE:
For making certain types of measurements and for convenience in connecting samples, five
accessories are available. Each is designed to meet the various measurement requirements
of a variety of test devices. Ail accessories are developed with careful consideration to ac¬
curacy, reliability, and ease of use. A brief description and a photo of each available acces¬
sory are given in Table 1-3.
1-3

GENERAL INFORMATION
Table 1-1. Specifications (1 of 2 )
41951A Specifications
Usable Frequency Range:
100 kHz to 500 MHz
DC Bias Range:
±40 V, ±0.5 A
UNKNOWN Port:
APC-7 Connector
Weight:
Approx. 2.7 kg
Approx. 0.55 kg ( Test Adapter only )
Operation Environment:
0°C to 55°C
<95%RHat40°C
Storage Environment:
-40®Cto 70®C
The following specifications apply to the 4195A when used with the 41961 A.
Measurement Parameter:
|Z|, |Y1, 0, R, X. Q, B, UC. D, Q(=1/D)
Test Frequency Range:
100 kHz to 500 MHz
Signal Level at DUT ( nominal):
-62 dBm to +3 dBm at 50 Cl load
Note:
Signal level (at DUT) is 12 dB lower than
4195A output level.
Output Impedance:
Nominal 50 Cl
DC Bias (supplied from 4195A):
Voltage Range
Resolution
Accuracy
Maximum Current
-40 V to 40 V
10 mV
±( 0.12%+12 mV ) at 23°C ±5°C
±20 mA
1 - ,

GENERAL INFORMATION
Table 1~3. Specifications ( 2 of 2 )
leasurement Range and Highest Resolution:
Parameter
Range
Resolution
|Zj,R,X 30 mC to 30 kO 10 mO
lYl, 0, B
30 uS to 30 S
10 uS
6
-180° to 180° 0.01 °
L
10 pH to 30 mH
10 pH
C 10 fF to 30 uF 10 fF
D
0.001 to 10
0.0001
Q
0.1 to 1000 0.01
,,.^jSMrement Accuracy ( Supplemental Performance Characteristics ):
Measurement accuracy is specified at the connecting surface of the APC»7
connector, under the following conditions.
1) Warm up Time; >30 minutes
2) Ambient Temperature: 23®C ±5®C
at the same temperature at which
Calibration was performed
3) Output Signal Level:
4) Signal Level at OUT:
5) Correction:
15 dB greater than the Input Range of
reference port (the value indicated by
‘ RANGE R« ’ on the 4195A’s display )
"20 to +3 dBm
ON
Figure 1~3 shows the impedance measurement accuracy of HP 4195A
when used with the 41951 A,

GENERAL INFORMATION
Figure 1-3. Impedance Measurement Accuracy (1 of 4 )

GENERAL INFORMATION
Note: 1. The above data applies to the averaged measurement data ( ap¬
plies when the VIDEO FILTER is on ).
2. When the DC bias is used, use the following value of A, B, and C
in place of the above value, to calculate the measurement
accuracy.
1 a (1.5+0.006x1)%
- I + lOO I+2S0
E 15 X -Cl5+27rF-10 ^)x --ran b r-m 4
1*200 „ I+2SQ ^
10 " 25 “
,, 1+250
(S+217F • 10 ■ ^) X ---uS
lOOK 500K
Test Frequency [Hz]
a: (3.0+0,006 x 1)%
b: (15+2 itF- l O"^) X —L.i^£—rafl
100
Z|-0 Accuracy:
, I+lOO
c: (5+2 itF-10-®) X -MS
100
Zj accuracy
Za = A+(B/j Zm | +Cx | Zm i )x100 (%)
6 accuracy
0a=:sin~MZa/1OO)
Yj-0 Accuracy:
Where |Zm| is \Z\ measured. A, B and C are
obtained from the graph above.
Y| accuracy
Ya = A+(Bx I Ym | +C/ j Ym | )x100 (%)
6 accuracy
da = sin' ^(Ya/100)
Where {Ymi is 1Y| measured. A, B and C are
obtained from the graph above.
Figure 1-3. Impedance Measurement Accuracy ( 2 of 4 )
1-7

GENERAL INFORMATION
R, X Accuracy ( depends on D ):
D<0.2
0.2<D<5
5<D
Ra
Za(R) '
COS0 ^
Za(R) (%)
Xa Za(X) (%)
sine
D can be calculated as R/X,
R/(2xTTXfxLs) or Rx2XTTXfxCs
Q can be calculated as tan" ^(X/R),
tan""(2xTTXfxLs/R) or
tan* ^(1/(Rx2xiTXfxCs))
Za(R) = A+{B/1 Rm | +Cx j Rm | )x100 (%)
Za(X) = A+(B/! Xm | -hCx | Xm | )x100 (%)
Rm and Xm are the measured R and X, respec¬
tively. A, B and C are obtained from the preced¬
ing graph.
G, B Accuracy ( depends on D ):
D<0.2
0.2<D<5
5<D
Ga
Ya(G) , 0 ^^
cose
Ya(G)
Ba
Ya(B) (%)
YaCB),.,
sin6 ^
_ Ya(G)_.
±Gn,. (S)
D can be calculated as G/B,
G/(2xTTXfxCp) or Gx2xiTXfxLp
d can be calculated as tan"^(B/G),
tan" ^{2xTrxfxCp/G) or
tan" ‘ (1 /(Gx2x-rrxfxLp))
Ya{G) = A+(Bx I Gm! +0/1 Gm j )x100 (%)
Ya{B) = A+{Bx I Bm | +C/1 Bm | )x100 (%)
Gm and Bm are measured G and B, respectively.
A, B and C are obtained from the preceding
graph.
Figure 1-3. Impedance Measurement Accuracy ( 3 of 4 )

GENERAL INFORMATION
D Accuracy:
D<0.2
0.2<D
Da
Za/100
(Za/100)x(1+D2)
Where Za is | Z | accuracy
L Accuracy ( depends on D ):
D<0.2 0.2<D
La
La
La X (1+D)
Where
La = A+(B/ i Zl I -fCx I Zl I )x100 (%)
Where iZ!| = ZxirxfxLm, f is frequency in Hz
and Lm is measured L. A, B and C are obtained
from the preceding graph.
C Accuracy ( depends on D ):
D<0.2
0.2<D
Ca
Ca Ca X (1+D)
Where
Ca = A+(B/! Zc i +Cx i Zc I )x100 {%)
Where |Zc| = l/Zx-nxfxCm, f is frequency in Hz
and Cm is the measured C. A, B and C are
obtained from the preceding graph.
Figure 1-3. Impedance Measurement Accuracy { 4 of 4 )
1-9

GENERAL INFORMATION
Table 1-3. Available Accessories { 1 of 2 )
Coaxial Fixtures
Test Fixtures { coaxial termination type ) for holding
a piece of sample holders accommodate a cylindri¬
cal sample in their respective inner chambers. Two
kinds of fixtures fit samples dimensions given
below:
Sample
Fixture
Max, dimensions
d
7 mm
2
20 mm
d
10 mm
2 20 mm
04191-85302
~r _
i
_L 16091-60012
Usable frequency range: DC to 1000 MHz.
Electrical length; 1.87 cm (typical).
Maximum applied DC bias voltage: ±40 V,
Note: The 16091A fixture of 7 mm inner diameter
( P/N 04191-85302 ) is actually the same as the OS
standard termination. Thus, this fixture is not sup¬
plied with the 16091A fixture set since the furnished
OS termination can be used.
Spring Clip Fixture
Test fixture for connecting axial and radial lead
components, and leadless chip components. The
spring clip contacts can be adjusted to the dimen¬
sions given below.
>0. CSinm
;^2.5mfn
13mm
0mm
A slide gauge provides direct read-out of the length
of the test sample. Maximum applicable DC bias is
±150 V/±0.5 A.
1-10

GENERAL INFORMATION

INSTALLATION
SECTION 2
INSTALLATION
2-1. INTRODUCTION
This section provides installation instructions for the HP 41951A Impedance Test Kit. It also
includes information on the initial inspection, damage claims, preparation for using the
41951 A, packaging, storage, and shipment.
2-2. INITIAL INSPECTION
The 41951A Impedance Test Kit meet all of the specifications listed in Table 1-1. Upon
receipt, inspect the shipping container for damage, if the shipping container or the cushion¬
ing material has been damaged, keep the container and packing material until the contents
have been checked for completeness and the test kit has been checked out mechanically
and electrically. The contents should be as shown in Figure 1-1. The procedures for check¬
ing the general electrical operation are given in Section 4.
If anything is missing, damaged (scratches, dents, broken connectors, etc.), or if perfor¬
mance does not meet the verification test limits, notify the nearest HP Sales office {see the
list at the back of this operation note). The HP Sales Office will immediately arrange for
repair or replacement without waiting for a claim settlement.
2-3. INTI
The interconnection between the 41951A and the 4195A, is achieved by connecting the
Impedance Test Adapter to the 4l95A’s Channel 1 or 2, using the furnished Adapters and
Cables.
1. C onnect two female N-type connectors; INPUT S and OUTPUT R, to the 4195A’s OUT¬
PUT SI (or S2) and INPUT R1 (or R2 ) connectors, using two furnished N(m)-N(m)
Adapters, respectively.
NOTE
When connecting the INPUT S and OUTPUT R connectors, do not try to tighten
one connector completely, alternately tighten each connector, little by little, until
both connectors are tight.
2. Connect the OUTPUT T connector to the 4195A’s INPUT T1 ( or T2 ) connector, using
the furnished N(m)-N(m) Cable.
3. If the DC bias supplied from the 4195A is used, connect the DC SOURCE INPUT con¬
nector to the 4195A’s DC SOURCE OUTPUT connector using the furnished BNG(m)-
BNC(m) Cable.
2-1

INSTALLATION
NOTE
If the DC bias supplied from an external DC power supply is used, connect the DC
SOURCE INPUT connector to the power supply’s output terminal. The outer con¬
ductor of the DC SOURCE INPUT connector is grounded.
2-4. STORAGE ENVIRONMENT
The 41951A may be stored or shipped under the following environmental conditions.
Temperature -40 ° C to 70 C
The unit must be protected from temperature extremes which can cause condensation.
2-5. PACKING
Original Packing.
Containers and packing material identical to those used in factory packaging are available
from Hewlett-Packard. If the unit is being returned to Hewlett-Packard for servicing, attach a
tag Indicating the type of service required, return address, model number and full serial
number.
The following general instructions should be used for repacking with commercially available
materials:
a. Wrap the unit in heavy paper or plastic. If shipping to a Hewlett-Packard Sales Office
or Service Center, attach a tag indicating the type of service required, return address,
model number and the full serial number.
b. Use a strong shipping container. A double-walled carton made of 350 pound test
material is adequate,
c. Use enough shock absorbing materia! ( a 3 to 4 inch layer) around all sides of the
unit to provide a firm cushion and to prevent the unit from moving inside the
container.
d. Seal the shipping container securely.
e. Mark the shipping container FRAGILE to ensure careful handling.
f. In any correspondence, refer to unit by its model number and the full serial number.
NOTE
If you ever need to return the 41951A for servicing, HP recommends that you
return your 4195A also so that system performance can be verified after repairs
are made.
2-2