HP 423A Quick start guide

HEWLETT PACKARD
I. INTRODUCIION.
2. The 423A and 84?0A Crystal Detectors are 5Gohm
(nominal) devices designed for meazurement use in
coaxial systems. They measure relative power up to
100 mW, ahd have a BNC output jack to connect the
detected output to a meter, such as the 415E. Fre-
quency range of the 423.4' is 10 MHz to 72.4 GHz. The
8470A has additionai range up to 18 GHz.
3. Output polarity of the Detectors is negative unless
the Option03 version ispurchased. Specifications and
Options are listed in Table 1.
4. The optional Load Resistor, Model 11523A, is
mounted in a separate housing to permit easyconver-
sion from optimum square law to maximum output.
Each load is identified by the serial number of the
Detector to which it is matched. If you have more than
one Model 115234, always be surethat the proper one
is in use for the Detector you are using.
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OPERATING NOTE 16 JUNE 1967
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oo423-9oo1o lruo, Page Mill Road, Palo Alto, California, u.E.A., Cable: "HEWPACK' Tel: (4s) ezo-zooo
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Figure 1. Models 4234' and B4?0A Crystal Detectors and Model 115234 Load Resistor
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5. PRECAUTIONS.
6. ELECTRICAL SHOCK.
?. DISCHARGE OF STORED ELECTRICAL ENERGY
CAN EASILY DAMAGE THE CRYSTAL DETECTOR.
A 100-pF capacitor, the equivalent of four feet of co-
axial cable, charged to 14 volts stores 0.1 erg ofenergy
which is the maximum safe pulse rating of the detector.
Be certain that a cable is connected to assoc iated equip -
ment and discharged before connecting it to crystal
detector.
8. HANDLING DETECTOR ELEMENT.
9. DO NOT HANDLE DETECTOR ELEMENT USED
IN CRYSTAL DETECTOR NEEDLESSLY. Static elec-
tricity which builds up on a person, especially on a
cold, dry day, must never be allowed to discharge
through the Crystal Detector. Avoid exposed leads to
or from the Crystal Detector, since these are often
touched accidentally. Refer to Paragraph 24 for proper
precautions.
GRYSTAL
DETEGTOR
t] a\
;d'. ;
models
4234 &
8470A
Printed in U.S.A. @ Europ"' 54 Route Des Acacias, Geneva, Switzerland, Cab/e: " HEWPACKSA" Tet.(022) 42.s|.50

Page 2Models 423A/8410A
Table 1. Specifications \-l
Frequency Range:
423A: 10 MHz to 12.4 GHz.
84704: 10 MHz to 18 GHz (Below I GH4RF may
leak through the video output connector. It can
be eliminated, if objectionable, with suitable low
pass filter. )
Frequency Response:x
423A: +0.2 dB/octave 10 MHz to I GHz; *0. 5 dB
overall.
84?0.A: +0.2 dB/octave l0 MHz to 8 GHz; t0,5 dB
to 12.4 GHz; +1.0 dB overall.
Maximum Power: 100 mW, peak or average.
Sensitivity:
High Level: < 0.35 mW produces 100 mW ou@ut.
Low Level: ) 0.4 mVdc /pW CW.
Impedance: 50 ohms.
Refl ection Coeff icient:
423.4' and 84704: 10 MHz to 4. 5 GHz, 0. 091 (1.2
SWR); 4.5 GHz to 7.0 GHz, 0. 15 (r.35 SWR);
7.0 GHz to 12.4 GHz, 0.2 (t. S SWR).
84?04': 12.4 GHz to 18.0 GHz, 0.26 (1. ? SWR).
Output Impedance: < 15kO shunted by 10 pF.
Connectors:
4234:
Option 01: Matched pair. Frequency response
characteristics (exclusive of basic sensitivity)
track within +0.2 dB per octave from 10 MEz
to 8 GHz, t0.3 dB from 8 to L2.4 G[lz.
Option 02: Furnished with matched load resistor
(11523A) for optimum square law characteristics
at 2 4" C (?5' F;, * ( +0. 5 dB variation from squar.e
law over a range of at least 30 dB up to 50 mV
peak output working into an external load ) 75k
ohms. Sensitivity typically ) 0, I mY / pW when
Ioad resistor is used. Overall tength 4-l/2 i\.
(144 mm).
Option 03: Positive polarity or/tput.
8470A:
Option 01: Matched pair. Frequency response
characteristics (exclusive of basic sensitivity)
track within t0.2 dB per octave from 10 MHz to
8 GHz,t0.3 dB from 8 to 12.4 GHz, *0.6 dB
from 12.4 to 18 GHz.
Option 02: Furnished with matched load resistor
(11523A) for optimum square law characteristics
at 24" C (?5 "F;,* < +0.5 dB variationfrom square
law over a rillge of at least 30 dB up to 50 mV
peak output working into an exte rnal load ) 7 5kQ.
Sensitivity typically )0.L mY/pW when load
resistor is used. Overall length 4-L/2 n.
(144 mm).
Option 03: Positive polarity output.
Option 12: Furnished with stainless steel type N
male connector.
Option 13: F\rrnished with stainless steel tlpe N
female connector.
Detector Element: Supplied.
- replec e rn enf -a
s se m bl ie s. )
Output Polarity: Negative.
posftiGEfefify units. )
Noise: (200 pVp-p, with CW applied to produce
J00-mVdc output.
*As readon a meter calibrated for square-law de-
tectors (such as HP 4158 SWR Meter).
(Refer to Table 2 for
(Refer to options for t
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lO. GElrllRAt.
11. The Crystal Detectorcanbeusedas ademodulator
to obtain a pulse envelope which can then be observed
on an oscilloscope. It can also be used as a general
purpose detector.
12. When using the Crystal Detector with an oscillo-
scope and the waveshapes to be observed have rise
times of lessthan 5 psec, the coaxial cable connecting
oscilloscope and detector should be as short as possible
and shunted with a resistor. Ideally, this resistor
should be 50 ohms to terminate the coaxial cable
properly. However, with 50ohms resistance, possibly
the output video pulse maybe too small to drive some
oscilloscopes. Therefore, the cable should be shunted
with the smallest value of resistance that will obtain
suitable deflection on the oscilloscope; typically the
value will lie between 50 and 2k ohms. The larger the
resistance the more degradation of rise time.
13. The power applied to the Detector can be either
modulated or continuous wave (CW). If modulated at
a 1000-cps rate, the sensitive HP Model 4l5B/E can be
used as the indicator. For CW detection, a dc milli-
ammeter ormillivoltmeter zuchasthe HP Model 425A
Microvolt-Ammeter can be used as the indicator.
14. PEAK POWER MEAST]REMENT.
15. The arrangement of equipment f or peak power
measurement is shown in Figure 2. The procedure
involves calibration of an oscilloscope which in furn
is used to calibrate a CWgenerator. The outputof the
calibrated CW generator is meazured with a poril/er
meter; thepeak power of a pulse istherebymeasured.
The procedure is as follows:
a. Connect equipment as shown in Figure 2, step 1.
b. Observe pulse on a dc-coupled oscilloscope.
U sing a marking pencil, mark on the graticule the base -
to-peak amplitude of the pulse envelope.
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01613-8

\-
Models 423A/8410A
Figure 2. Peak Power Measurement
c. Replace the pulse source with a CW generator
(step 2). While observing the oscilloscope trace, ad-
just amplihrde of CWgenerator output tomake crystal
ouQut equal to that of pulse generator as indicated by
markings on graticule (step b).
d. While performing the next step, leave CW gen-
eratorat settingobtainedin step c. Disconnect Detec-
tor from CW generator. Connect output of CW gen-
eratorto atlermistor and power meter. Measure ad-
justed level (step c) of CW generator output.
e. The peal power of the pulse envelope observed
in step b is equal to the output power of the CW
generator.
16. REFLECTOMETER APPLICATION.
1?. For information about reflectometer systems and
measrrements, see HP Application Notes b4 and 61
and Ilewlett-Packard Journal VoI. 12, No. 4, copies
of which are available upon request.
It. HARMONIG ]REQUENCY-CONPARISON
NEASURENENTS.
19. TheDetector canbe usedas a mixer inharmonic-
frequency comparison measurements. See Hp Appli-
cation Note 2.
20. REP1ACEMENT OF PARTS.
2 1. Succeedingparagraphs give instructions for repair
of the Detector, and the Option 02 Load Resistor, Model
11523A. Additional maintenance irdormation can be
01613-8
Page 3
obtained from your local Hewlett-Packard field office.
Stock numbers for replaceable parts are given in
Table 2.
22. The detector element assembly includes a detec-
tor element, an Option 02 load resistor for the 11523.4,,
capacitivewasher and a capsule spacer. The resistor
is to load the diode for square-law operation, the ca-
pacitive washer is to match the diodefor VSWR, while
the capzule spacer is mainly for flatness of sensitivity.
AII should be replaced as a unit when the diode is
replaced.
23. DETECTOR ELEMEMT REPLACEMEN'T.
WARNING
The special detector element (see Figure 3)
contained ia the Detector can be damaged in
handling, removal, or installation if certain
precautions are not taken. Thehandling pre-
cautions which follow should be read before
performance of any operation with the detector
element when it is out of either the housing
or the detector element shipping container.
24. DETECTOR ELEMENT HANDLING
a. Before instalting detector into mount, touch ex-
posed metal on mount with your hand to discharge static
electricity. Then insert detector into mount.
b. When handing crystal to another person, touch
hands first to ensure there is no difference in static
electricity potential between you.
c. Ohmmeters should NOT be used tomeasurefor-
ward- and back-resistance since it is rather easy to
damage these diodes. (The difficulty arises because
of the ohmmeter open-circuit voltages and short-
circuit currents. It is easy for these currents or
voltages to damage the diode.)
25. REPLACING DETECTOR ELEMENT.
26. Parts mentioned in the following procedure are
identified in Figure 3.
a. Remove connector cap from body. To remove
connector cap, use a pair of gas pliers with plastic
teeth or protect body with heavy paper or tape.
b. Remove old detector element, eapsule spacer,
and capacitive washer, and discard them.
c. Install the new capacitive washer, capsule
spacer, and detector element. Install the washer first,
the spacer with its polyiron side against the washer.
Finally, install the detector element by inserting the
resistive end into the center contact inside the Detector
body. cAuftoll
When inserting the detector element, do not
force the tip (resistive end) into the center
conductor in the body as the fingers of the
center conductor might be damaged.
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CRYSTAL DETECTOR
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POWER METER
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THERMISTOR MOUNT
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Page 4Models 423A/8470A
CONTACT
ASSEMBLY
TYPE N
MALE NUT
cAPsuuE l(
SPACER
clpacrttvE *
WASHER
xTHESE lrExs REPLACED TGETHER
REFER TO TABLE no.2 FOR
REPLACETENT ASSETBLY
90ck NUlBEis.
TYPE N NIJT
RETAINING RING
Figure 3. Model 423.4' Assembly
t/ t2'
Figure 4. Cutting Center Conductor Lead
to Accommodate Contact Spring
RESISTOR CONTACT SPRING
Figure 5. Model 11523A Load
Resistor, Cutaway View
d. Replace connector cap and TIGHTEN FIRMLY.
Note
The Option 02 Detector Element Assembly
includes a detector element and a resistor.
The resistor is for use in the Model 11523A
and must be installed to match it to the
Detector.
2?. REPLACING OUTPUT BNC CONNECTOR.
28. TOOLS REQUIRED.
a. Needle-point solderiag iron
b. Wire cutters
d. Flat file, #4
d. Tweezers
29. PROCEDURE. Parts mentioned in the following
procedure are identiJied in Figures 3 and 4.
a. Remove BNC connector and lockwasher.
b. Unsolder contact spring soldered to center con-
ductor lead.
( 1) Cut cente r conductor lead to approximately L / 32
inch (see Figure 4).
(2) With flat file, smooth end of lead; wipe off burr
with tweezers or similar metal instrument.
WASHER c. Slip contact spring over center conductor lead,
and solder.
BNC
CAUTION
Use solder sparinglyor it will creep back on
spring. Solder on springdestroys its useful-
ness, and solder is difficult to remove from
spring.
d. Let spring cool, and then replace lockwasher and
connector in connector cap.
30. REPLACEMENT OF 11523A PARTS.
31. Parts mentioned in the following procedure are
identifiedin Figures4 and 5. Toolsrequiredare listed
in Paragraph 28.
32. REPLACINGMALE BNC CONNECTOR.
a. Remove male BNC corurector and lock washer
from housing. To remove BNC, use a 3/8-inch open-
end wrench and hold the housing either in a vise or
with gas pliers. Before putting pliers on, protect the
housing of the 11523A with material such as heavy
paper.
b. Unsolder resistor.
c. Solder resistor to new BNC.
d. Let resistor cool and then check resistance from
male BNC pin through resistor; resistance measured
should b +l}Vo that indicated by the coding.
e. Replace lockwasher and male BNC.
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01613 -8

Models 423A/8470A Page 5
Table 2. Replaceable Parts, Models 4234, 8470A, and 115234
Description @ Stock No. Description @ StockNo.
Connector, male BNC for 115234
Connector, female BNC
Connector Assembly, female BNC,
including contact assembly
Connector, Cap
Ilousing for 11523A
115234 without resistor, includes
serial plate to be attached to 4234'
423A Diode Replacement Assemblies*
12 50 -0045
1250-025 1
00423 -600
0042 3 -60 1
5020-32 15
1 1523 -600
00423 -802
00423 -803
00423 -800
00423 -801
00423 -605
00423 -606
00423 -603
00423 -604
84?0A Diode Replacement Assemblies*
084?0-600 1
08470-6002
08470 -6003
08470-6004
084?0-6005
08470-6006
08470-600?
08470-6008
1250 -0745
1250 -0907
1250-08 16
5040-0273
1250-0909
08470-200 1
5060-0236
5060-023?
8? 10-08??
Single Detector Assembly:
Negative Polarity
Positive Polarity (Option 03)
Single Detector Assembly with matching
load resistor (Option 02):
Negative Polarity
Positive Polarity (Option 03)
Matched Pairs of assemblies (Option 01):
Negative Polarity
Positive Polarity (Option 03)
Matched pairs of assemblies with load
resistors (Option 02):
Negative Polarity
Positive Polarity (Option 03)
APC -? Connector Assembly
Inner conductor contact
Inner conductor contact mechanism
(contact plus outer body; assembled)
Support bead
Coupling nut
Center Conductor
Tools:
APC-7 contact extractor
APC-? Spanner wrench
Open-end wrench
Single detector assembly:
Negative polarity
Positive polarity (Option 03)
Single detector assembly with matching
load resistor (Option 02):
Negative polarity
Positive polarity (Option 03)
Matched pairs of assembly (Option 01):
Negative polarity
Positive polarity (Option 03)
Matched pairs of elements with
matching load resistor (Option 02):
Negative polarity
Positive polarity (Option 03)
xRefer to Table 1 for description of options
33. REPLACINGFEMALE CONNECTOR. 34. REPTACEAITE PARTS.
a. Remove BNC connector. To remove or install 35. This section contains information pertaining to
BNC,use a BNC wrenchoruse a male BNC connector replaceable parts (see Table 2) and the ordering of
as a wrench. these parts for the Models 423A, 8410A, and 11523A.
b' unsolder contact spring' go. Io order a replacement part, address order or
c. prepare repracement BNC connector: il3illt":?I:liii""ilf"Tlett-Packard rieldorrice (see
( 1) Cut cente r conductor lead to approximately I / 32
inch' 3?. S\peci{y the following information for each part:
(2) With flat file, smooth end of lead; wipe off burr
with tweezers or similar metal instrument. a. Model number
d. slip contact spring over center conductor lead, b' Hewlett-Packard stock number
and solder. c. Description of part.
CAUTION
Use solder sparingly orit will creep back on 3t. 'ERFOR1ANCE GHEGKS.
spring. Solder on springdestroys its useful-
ness and is diftucult to remove' 3g. The fo[owing paragraphs suggest methods to use
for checking detector specif ications. Forthese checks
e. Letcontactspring cool and then screwconnector the instrument operator should refer to the manuals
into mount. of the equipment involved for operating instructions.
01613-8

Page Models 423A/8470A
I
CENTER
CONDUCTOR
SUPPORT
BEAD
\
INNER CONDUCTOR
CONTACT MECHANISM
OUTER
CONDUCTOR
ING NUT
3.
4-
COUPLING SLEEVE
USE
To Connect:
1. On one connector, retract the coupting sleeve
by turning ttre coupling nut counterclockwise
until the sleeve and nut disengage.
2. On the other conuector, fully extend the coup-
ling sleeve by turning the coupting nut clock-
wise. To engage coupling sleeve and coupling
nut when the sleeve is fully retracted, press
back lightly on the nut while turning it clockwise.
Rrsh the connectors firmly together, and thread
the coupling nut of the connector with retracted
sleeve over the extended sleeve.
Close the gap between coupling nuts with the
nut on the extended-sleeve corurector.
To Disconnect:
1. Loosenthe coupling nut of the connector show-
ing the wider gold band.
E!'-'f
2. IMPORTANT: Part the connectors caretully
to prevent striking the irurer conductor contact.
P28tB-A-l
CARE
1. Keep contacting surfaces smooth and clean.
Irregularities and foreign particles can degrade
electrical performance.
Protect the contacting surfaces when the con-
nector is not in use by leaving the coupling
sleeve extended.
Use lintless material and/or firm - brisiled
brush such as tooth brush for cleaning. If a
cleaning fluid is needed use isopropyl alcohol.
IMPORTANT: Do not use aromatic or chlori-
nated hydrocarbons, esters, ethers, terpenes,
higher alcohols, ketones, or ether-alcohols
such as benzene, toluene, turpentine, dioxane,
gasoline, cellosolve acetate, or carbon tetra-
chloride. Keep exposure of the connector pa.rts
to both the cleaning fluid and its vapors as brief
as possible.
2.
3.
v
Figure 6. APC-7 Connectors
01613-8

ii
I
I
Models 423A/8470A
t
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I
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Page 7
REPLACING AMPHENOL APC-? CENTER CONTACT
Through wear or damage the contact in the center
conductor may need replacing. This contact is a
sm all four -pronged coll.et which snaps into a recess
in the center conductor. This contact is normally
held in bythe spring-actionof thefour prongs. With
a magnifying glass examine this contact to deter-
mine if it needs replacement. DO NOT REMOVE
THIS CONTACT FOR INSPECTION (itmaybedam-
aged by removing). The contact should be free of
burrs or wear and the prongs should be equally
spaced. If the contact is removed do NOT re-use
it (it may be damaged by removal). This contact
is Amphenol* part number 131-129 and Hp 1250-
090?. If this contact needs replacement and a new
contact is available proceed as follows:
1. Place the instrument so the connector faces
down, if possible.
2. Tap the connector lightty and the contact should
now protrude slightly. Insert the centering pin of
the Hewlett-Packard collet remover, Stock Number
5060-0236, withthe jawsopen. If thistool isnotaw.il-
able, an ordinary draftsman's mechanical pencil
may be used (the end of the jaws may have to be
filed to get a good grasp at the very end).
3. Allow the jaws on the tool used to close and
pull straight away from the connector without
twisting. The contact should come with the tool.
If not, repeat the process. Do NOT re-use the
contact.
4. Snap in a new contact by pushing a new con-
tact in place.
(Amphenol* Part number 131-129; Hp partnum-
ber 1250-0907)
*Amphenol RF Division, Danbury, Conn.
COUPLING SLEEVE
SUPPORT BEAD
INNER CONDUCTOR
CONTACT
OUTER CONDUCTOR
COUPLING NUT
eo?l,a. a
Figure ?. APC-7 Connector
o.314 M tN.
o.316 MAX.
o.063 MrN.
o.o66 MAX. o.o63 MrN.
o.o66 MAX.
ALL DIMENSIONS IN INCHES
o.3 t6 MrN.
o.320 MAX.
0.207 MAx.
0.207 MtN.
907t-^-IA
Figure 8. Type N Connector
\y
01613-8

Page 8
40. FREQUENCY RESPONSE CHECK.
a. Using a 10 Mc to 12.4 Gc signal source and an
SWR Meter as the indicator, connect the Detector to
the signal source and set any convenient upper scale
reference on the SWR meter.
b. Withoutchanging the RF output level of the SWR
meter settings, disconnect the Detector from the sig-
nal source.
c. Using a power meter/thermistor mount combi-
nation, measure the signal source RF output level and
record.
d. Change the frequency to another point and reset
the RF output level to that measured in step c.
e. Disconnect the power meter/ thermistor mount
from the srgnal source and connect the Detector. The
SWRmeter indication should bewithil 1.0 dB of orig-
inal reference.
f. Repeat steps b, c, d, and e at allpoints of interest
across the frequency band.
41. SENSITIVTIY CHECK.
a. Using a 10 MHz ta 12.4 GHz signal source and a
dc voltmeter as the indicator, connect the Detector to
the signal source and adjust the RF power level for a
100 mW detected output from the Detector.
b. Disconnect the Detector from t}te signal source
and measure the RF output level. Specification: less
tharr 0.355 mW should produce 100mV detectedoutput.
42. SWR CHECK.
a. Equipment required:
(1) tP 250A Rx Meter
(2) HP 803A VHF Bridge
(3) HP 417A Detector
(4) HP 8098/8068/444A Slotted Line
Models 4234/847OA
(5) P 805C Slotted Line
(6) Si$ral sources: 10 MHz to 18.4 GHz
b. To measure the S\[rR of the Detector in the 10 to
250 MHz range an RX meter should be used. The
method of measurement is explained below.
c. Using the HP 250A RX Meter, measure the re-
sistance (R) and capacitance (C) of the Detector. Cal-
culate the reactance of the Detector from the equation:
X equals 1 divided by 2 times 3. 1416 times the fre-
quency of measurement (neglecting the sign of C).
Calculate the Q (when Q equals R divided by X).
d. Calculate the Detector load impedance 21 from
the equation:
zt =n
where ZL = Detector load impedance
e. Calculate the SWR of the Detector from the fol-
lowing two equations:
(1) o=(zt/zd-t'
(zy/zs) + |
1
(2) swR = i++
where p = reflectioncoeffieient
Zo = characteristic impedance
f. To measure SWR in the 250-MHz to 500-MHz
range use HP 803A and HP 417A.
g. To measure SWR in 500- to 4000-MHz use 805C
Slotted Line and 4158 SWR Meter.
h. Tomeasure SWR in 4-to 12.4-GHz range usethe
HP 8098/8068/444A Slotted Line combination.
t
\r'
01613-8

::
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5579 Pearl Road
Cleveland 44129
Tel: [phone]
TWX: 810-421-8s00
2460 South Dixie Drive
Dayton 45439
Tel: [phone]
TWX:810-459-1925
OREGON
Westhills Mall, Suite 158
4475 S.W. Scholls Ferry Road
Pofiland 97225
Tel: [phone]
TWX,910-464-6103
I
fi
t:
4
i"
i$
Lr
bfl
i- \-
236 East 75th Street
l,lew York 10021
Iel 1212) 879-2023
TWX:710-581-4376
r uNrrED ,t^;:tcrRoNlc
ALABAMA
P.0.8ox 4207
2003 Eyrd Spring Road S.W.
HuntsYille 35802
Tel: [phone]
TWXI 810-726-2204
ARIZONA
3:{-o liorth Scottsdale Road
Sattsd.l€ E5251
:r' :C2 9it7E01
Trt 5::--.5112E2
232 Seuth Tirs Soui?trd
lE t5716
T.l: (6al2j 6412564
lwx: 910952-1162
CALIFORNIA
1101 Embarcadero Road
Palo Alto 94303
Tel: [phone]
TWX: 910-373-1280
2591 Carlsbad Avenue
Sacramento 95821
Tel: [phone]
TWX: 910-367-2092
1055 Shafter Street
San Diego 92106
Tel: [phone]
TWX: 910-335,2000
COLORADO
7965 East Prentice
Englewood 80110
Tel: [phone]
TWX: 910-935-0705
3939 Lankershim Boulevard 9999 N.E. 2nd Avenue
ilorth Hollywood 91604 Miami Shores 33138
Iel (2I3) 877-1282 Tel: [phone]
IWX: 910-499-2170 TWX: 81G848-7262
24315 Northwestern Highway 1219 Campville Road
Southlield 48075 Endicott 13760
Tel: [phone] Tel: [phone]
TWX: 810-232-1532 TWX: 510-252-0890
MINNESOTA
2459 University Avenue
St. Paul 55114
Tel: [phone]
TWX: 910-563-3734
FOR AREAS NOT LISTED, CONTACT: Hewlett-Packard; 1501 Page Mill Road; Palo Alto, Calitornia 94304; Tel: [phone]; TWX: 910-373-1267; Telex: 34-8461
PENNSYLVANIA
2500 lvoss Side Eoulevard
Monroeville 15146
rer lj.12) 271-0724
"rwx:710-797-3650
144 Elizabelh Street
West Conshohocken 19428
Tel: [phone]
TWX:510-660-8715
TEXAS
P.O. Box 7166
3605 lnwood Road
Dallas 75209
Tel: [phone]
TWX: 910-861-4081
P.0. Box 22813
4242 Richnond Avenue
Houslon 77027
re|: Q13) 667-2407
TWX:910-881-2645
GOVERNMEI{T CONTRACT OFFICE
225 Billy Mitchell Road
San Antonio 78226
fel: (512) 434-417L
TWX: 910-871-1170
UTAH
2890 Souih Main Street
Salt Lake City 84115
Tel: [phone]
TWX: 910-925-5681
VIRGINIA
P.0. Box 6514
2111 Spencer Road
Richmond 23230
Tel: [phone]
TWX:710-956-0157
WASHINGTON
11656 l.i.E. Eighth Street
Bellevue 98004
Tel: [phone]
TWX, 910-443-2303
CANADA
ALBERTA
10010 - 105th Street
Edmonton
Tel: [phone]
TWX: 610-831-2431
BRITISH COLUMBIA
Hewlett-Packard (Canada) Ltd.
2184 West Broadway
Vancouver
Tel: [phone]
TWX: 610-922-5050
NOVA SCOTIA
7001 lllumford Road
Suite 356
Halifax
Tel: [phone]
TWX: 610-271-4482
ONTARIO
Hewlett-Packard (Canada) Ltd.
880 Lady Ellen Place
ottawa 3
Iel' [phone]
TWX:610-562-1952
Hewlett-Packard (Canada) Ltd.
1415 Lawrence Avenue West
T0r0nt0
Tel: [phone]
TWX: 610-492-2382
QUEBEC
Hewlett-Packard (Canada) Ltd.
275 Hymus Eoulevard
Pointe Claire
Iel [phone]
IWX: 610-422-3022
Telex:01-2819
CENTRAL AND
ARGENTINA
lvlauricio A. Su6rez
Telecomunicaciones
Carlos Calvo 224
Buenos Aires
Tel: 30-6312, 34-9087
Cable: TELEPILoT Buenos Aires
Ciental, lmportacao e
Com6rcio Llda,
Rua Des. Eliseu Guilherme,62
Sao Paulo 8
Telr 70-2318
cable: clENTALC0, sao Paulo
SOUTH AMERICA
CHILE
H€clor Calcagni
Casilla 13942
Santiago
Tel:490.505,393.11.9
COLOMBIA
lnstrumentacion
COSTA RICA
Lic. Alfredo callegos curdiSn
Apartado 3243
San los6
Tel:21-86-13
Cable: GALGUR San los6
ECUADOR MEXTCO
Laboratorios de Radio-lngenieria Hewletl-Packard Mexicana,
Calle Guayaquil 1246 S.A. de C.V.
Post office Box 3199 Eugenia 408, Dept. 1
quito Merico 12, D.F.
Tel: 12496 Tel: 43-03-79
CAbIE: HORVATH QUito
EL SALVADOR
Electrdnica
2l Auenida Norte 1133
Apartado Postal 1589
San SalYador
Tel:25-74-50
Cable: ELECTR0NICA
San Salvador
GUATEMALA
0lander Associates Latin America
Aparlado 1226
7a. Calle, 0-22, Zora I
Guatemala City
Iel 22812
Cable: oLALA Guatemala City
BRAZIL Henrik A. Langebaek & Cia. Ltda.
Ciental, lmportacao e Cra. 7A N. 48-51,/59
Comercio Ltda. Apartado Aereo 6287
Avenida 13 de Maio,13-22'andar 80g0ta, 1 D.E.
Rio de Janeiro c.B. Tet: 45-78-06, 45-55-46
Tel: 42-9483 Cable: AARIS Bogota
NICARAGUA
Roberto TerSn c.
Edi{icio TerSn
Apartado Postal 689
Managua
Tel:3451,3452
Cable: RoTERAN Managua
PANAUA
Electr6nica Balboa, S.A.
P.0. Box 4929
Ave. l\4anuel Espinosa No. 13-50
Bldg. Alina
Panama City
Tel:30833
Cable: ELECTRoN Panama City
PERU
Fernando Ezeta B.
Av. Petit Thouars 4719
Miratlores
Casilla 3061
Lima
Tel: 50346
CAbIE: FEPERIJ LiMA
PUERTO RICO
San luan Electronics, lnc.
P.0. Box 5167
Ponce de Le6n 150, Stop 3
Puerta de Tierra Santa
san Juan 00906
Tel: [phone]
Cable: SATRoNICS San luan
URUGUAY
Pablo Ferrando
S.A. Comercial e lndustrial
Avenida ltalia 2877
Casilla de Correo 370
Montevideo
Tel:40-3102
Cable: RADIUM Montevideo
VENEZUELA
Citec, C.A.
Edif. Arisn-0t. #4
Avda. Francisco de Miranda
Apartado del Este 10934 Chacaito
Caracas
Tel:71.88.05
Cabler CITECAL Caracas

HEWLETT IE PA1KARD
ELECTRONIG INSTRUMENTATION SATES AND SERVICE v
EUROPE
AUSTRIA
Unilabor H.n.b.H.
Wissenschaftliche lnstrumente
Rummelhardtgasse 6,/3
P.0. Box 33
vienna tx,/71
Tel:425 181
Cable: LAEoRINSTRUMENT
Vienna
BELGIUM
Hewlett-Packard Benelux S.A.
20-24 rue de l'Hopital
Brussels
fel: Ll 22 20
cable: PALoBEN Brussels
DENIIARK
TaBe Olsen A,/S
Ronnegade I
Coperfiagcn o
Tel: 29 48 00
Cabler ToCOPEN Copenhagen
FINLAND
mTo 0/Y
Meritullinkatu 11
P.0. Box 10153
Helsinki 10
Tel, 61 133
cable: lNTo Helsinli
FRANCE
Hewlett-Packard France
2 rue Tete d'Or
Lyon, 6 - Rhdne
Tel, 52 35 66
Hewlett-Paclard France
150 goutevard Massena
Parls 13e
Tel: [phone]
Cable: HEWPACK Paris
GERMANY
Hewlett-Packard Vertriebs-cmbH
Lietzenburger Strasse 30
I Berlin w 30
Tel: 24 86 36
Hewlett-Packard Vertriebs-cmbH
Herrenberger Strasse ll0
703 Eallintlr, Wiirftemberg
Tel:[phone]
cable: HEPAG Boblingen
tlewlett-Packard Yertriebs{mbH
Achenbachstrasse 15
4 ltos$ldorl 1
Tel: 6E 52 58,/59
Hewlett-Packard Vertriebs-GmbH
Kurhessenstrasse 95
6 Franklurt 50
Tel: 52 00 36
cable: HEwPAcKSA Frankfurt
Hewlett-Packard vertriebs-cmbH
Beim Strohhause 26
2 Hrmburg I
fer 24 05 5L/52
cable: HEwPAcxsA Hamburg
Hewlett-Packard Vertriebs-GmbH
Reginfriedstrasse l3
8 Munidr I
fel 69 57 21/22
cable: HEWPACKSA Munich
GREECE
Kostos f€rayannis
18, ErM Stret
lllds 126
Tel; 230 301
cable: RAxAR Athens
lREl llD
Hewlett-Paclard Ltd.
224 B.th R€d
Sllcl, Bets, England
Tel: Slwglt 2E4OG9, 2948G9
cable: HEWPIE sloush
]TALY PORTUGAL
Hewlett-Packard ltalianaS.p.A. Telectra
Viale Lunigiana 46
Iilrn
Tel: 69 15 84
Cable: HEWPACIT Milan
Rua Rodrigo da Fonseca 103
P.0. Box 2531
Lislon 1
Tel: 68 60 72
SWITZERUIND
HEWPAK AG
Zurcherstrasse
8952 Schlieren
Zurich
Tel: [phone]
cable: HEwPAcxAG zurich
TUNI(EY
Telelom Engineering 8u.@u
P.0. Bor 376 - Galata
lltatrbul
Tel: 49 .O 40
cable: TELEMATI0N lstanbul
UNITED KINGDOM
Hewlett-Packard Ltd.
224 Bath Road
Slough, Bucls
Tel: Slough 2841F9, 29at+9
cable: HEWPIE slougn
YUGOSLAYIA
Belram S.A.
83 avenue des Mimogs
grusscls 15, Belgiun
Tel: 35 29 58
cable: BELRAMEL Brussels
Hewlett-pactard ttaliana s.p.A. cable: TELECTRA Lisbon
Palazo ltalia
Piazza Matconi 25
Rome - Eur
Tel: [phone]
cabler HEwPAcIT Rome
NETHERLANDS
Hewlett.Packard Benelux, N.V
de Boelelaan 1M3
Amsterdan,2.2
fel: 42 77 77
Cable: PALoBEII Amterdam
NORWAY
Morgenstierne & Co. A'/S
lngeniofirma
6 Wessels cale
0slo
Tel: 20 15 35
Cable: M0R0F Oslo
SPAIN
Ataio lngerieros
Urgel,259
Barcelona,11
Tel: [phone]
Ataio lngenieros
Enrique Larreta 12
Madrid, 16
felz 235 43 44
CAbIE; TELEATAIO MAdTid
SWEDEN
HP lnstrument AB
Hagalersgatan 7
tOlndal
Tel: 031 - 27 68 00
'lP lnstrunent AB
Centralvegen 28
Solra
Tel: 08 - 83 08 30
Cable; MEASUREMENTS
Stockholm
FOR AREAS NOT LISTED, CONTACT: Hewlett-Packard S.A.; 54 Route des Acacias; GeneE, Switzerland; lel: (O22) 42 81 50; Telex: 2.24.86; Cable: HEWPACKSA Geneva
AFRICA, AS|A, AUSTRALIA
AUSTRALIA
Hewlett-Packard Australia
Pty. Ltd.
22-26 Weir Street
elen lris, S. E.6
Victoria
Tel:20-1371 (4 lines)
Cable: HEWPARD Metbourne
Hewlett.Pactard Australia
Pty. ttd.
4 Grose Street
elebe, New South Wales
rel 211-2235,211-2888
Cable: HEWPARD Sydney
CEYLON
United Electricals Ltd.
P.0. Box 681
Yahala Building
Staples Street
Colombo 2
Tel: 5496
Cable: H0TP0tNT Cotombo
ETHIOPIA
Alrican Salespower & Agency
Private Ltd., Co.
P,0. Box 718
Addis Ataba
Tel: 44090
Cable: ASACo Addisababa
HONG KONG
Schmidt & Co. (Hong Kong) Ltd.
P.0. Box 297
1511, Prince's Building
10, Chater Road
llotrg Kong
ret 24Ol6a, 232735
Cable: SCHMIDTCo Hong Kong
INDIA
The Scientific lnstrument
Co., Ld.
6, Tej Bahadur Sapru Road
Allahabad 1
Tel:2451
cable: slc0 Allahbad
The Scientific lnstrument
Co., Ld.
240, Dr. Dadabhai Naoroii Road
Sombay 1
fel 26-2642
Cable: Slco Bombay
The Scientific lnstrument
Co., Ld.
11, Esplanade East
Calcutta I
fel 23-4129
Cable: SlC0 Calcutta
The Scientific lnstrument Co., Ld,
30, Mount Road
Madlas 2
Tel:86339
cable: slco Madras
The Scientific lnstrument Co., Ld
&7, Ajmeri Gate Ertn.
Ier oelhi I
Tel:27-1053
cable: slco New Delhi
IRAN
Telecom, Ltd.
P.0. Box 1812
feheran
Tel: 43850, 48111
cable: EAscoM Teheran
ISRAEL
Electronics & Engineering
Div. of Motorola lsrael Ltd.
16, Kremenetski Street
Tel-AYiY
Iel: 350211213
cable: BASTEL Tel-Aviv
JAPAN
Yologawa-Hewlett-Packard Ltd.
Shinhankyu Building
No.8, Umeda
Kita-ku, Osala City
Tel:[phone]
Yokogawa-Hewlett-Packard Ltd.
Ito Building
No.59, Kotori-cho
Nakanura.ku, l{agoya city
Tel:[phone]
Yokogawa-Hewlett-Paclard Lld.
Ohashi Euilding
No.59, l-chome, Yotogi
Shibuya-ku, Tokto
reL 370-22A1
cable: Y0K0HEwPAcK Tokyo
Iele* 232-2OU
KENYA
R. J. Tilbury Ltd.
P. O. Box 2754
Suite 517/518
Hotel Ambassadeur
ilairobi
Tel: 25670, 26803, 68206
CAbIC; ARJAYTEE NAiTObi
KOREA
American Trading Co., Korea, Ltd
Seoul P.0. Box 1103
112-35 Sokong-Dong
Jung-ku, Seoul
Tel: 3.7049, 3.7613
Cable: AMTRACo Seoul
LEBANON
Cfnstantin E. Macridis
Clemenceau Street
Clemenceau Center
Beirut
Tel: 220845
CAbIE: ELECTROI{UCLEAR BEiTUt
MAUTYSIA
MECoMB Malaysia Ltd.
2 Lorong 13/6A
Section 13
Petaling Jaya, Selangor
Cable: MECoMB Kuala Lumpur
NEW ZEALAND
Sample Electronics (N.2.) Ltd.
8 Matipo Street
onehunga S.E.5
Auctland
Tel:657-356
Cable; ELPMAS Auckland
PAKISTAN (EAST)
Mushko & Company, Ltd.
31, Jinnah Avenue
Dacca
Tel:80058
cable: C0oPERAToR Dacca
PAKISTAN (WEST)
Mushko & Company, Ltd.
0osman Chambers
Victoria Road
Karachi 3
fel 5L027, 52927
cable: c00PERAToR Karachi
SINGAPORE
Mechanical and Combustion
Engineering Company Lld,
9, Jalar Kilang
Singapore, 3
Tel:[phone]
Cable: MECoMB Singapore
SOUTH AFRICA
F. H. Flanter & Co. (Pty.), ltd.
Rosella House
guitencingle Street
Cape Town
Tel:3-3817
cable: AUToPHoNE Cape Town
F. H. Flanter & Co. (Pty.), Ltd.
104 Pharmacy House
80 lorissen Street
Braamfontein, Johannesburg
lel 724-4172
TAIWAI{
Hwa Sheng Electronic Co., Ltd.
P.0. Box 1558
21 Nankins West Road
!;|n;i.__. ___-- v
Tel,46076.45936
cable: vlcTR0Nlx Taipei
THAIL'IND
The lnternational
Engineering Co., Ltd.
P. O. Box 39
614 sukhumvit Road
Bangkok
Tel:[phone]
cable: GYsoM Bangkok
VIETNAM
Landis Brothers and Company,
lnc.
P.0. Box H-3
216 Hien-vuong
Saigon
Tel: 20.805
Cable: LANBR0C0MP Saigon
v

HEWLETT PACKARD
CERTIFICAT ION
The Hewlett-Packard Company certifies that this instrument was
thoroughly tested and inspected and found to meet its published
specifi.cations when it was shipped from the factory. The Hewlett-
Packard Company further certifies that its calibrationmeasurements
are traceable to the U. S. National Bureau of Standards to the extent
allowed by the Bureau's calibration f acility.
WARRANTY AN D ASSISTANCE
All Hewlett-Packard products are warranted against defects in
materials and workmanship. This warranty applies for one year from
the date of delivery, or, in the case of certain major components listed
in the operating manual, for the specified period. We will repair or
replace nroducts which Drove to be defective drrrins f,he warrantw
:::
tho-;
J
t\,
p.r
replace prod prove to be defective during the warranty
period. No other warranty is expressed or implied. We are not liable
for consequential damages.
For any assistance contact your nearest Hewlett-Packard Sales and
Service Office. Addresses are provided at the back of this manual.