HP 461A Service manual

. .~ 0 PER A TIN G
AND SERVICE MANUAL
WIDEBAND AMPLIFIER
461A/462A
•
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HEWLETT~PACKARDr
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i MANUAL CHANGES
MODEL 461A/462A
WIDEBAND AMPLIFIERS
Manual Part No. 00461-90006
• Newor Revised Item
CHANGE NO.1: For Serial Numbers:
461A -0946A05116 and above.
462A -
0947A016Bl and above.
e. Measure the signal distortion in percentage.
The distortion must be less than 5%.
Revise Figure 5-2 as follows:
Page 64. Change 00461-00203 10 00461-00205.
CHANGE NO.2: For Serial Number 0946A05191 and
above (461A).
CHANGE
NO.4 applies to Serial Numbers 0946A05341
and greater for the Model 461A, and Serial Numbers
0947AOl721 and greater for the Model 462A.
Page
5·14. Schamatic Note B. Add: R41 10 180 ohm.
Page 6-4. Change the Part Number of the "Insulator for
01" from 1200-0043 to 0340·0580.
Page
5·15/5·16. Change A3R41 and A3R4510 160.
Page 6·3. After A3L4 and A3L5 descriptions, add
"(462A Only)". Also add L4. L5; 00461-86006;
CoII:Variable 0.1 pH (461A Only).
Page 6·4. Change A3R41 and A3R45 to 0683-1615.160
ohms. (461A Only).
CHANGE
NO.3: For All Serial Numbers.
Page 5·3. Change Paragraph 5·10 as follows:
5·10. OISTORTION CHECK (461A).
CHANGE
NO.5 applies to Serial Numbers 0946A05501
and greater for the Model 461A, and Serial Numbers
0947A01751 and greater for the Model 462A.
Page 5·15/5-16. Power Supply (A2) Assembly Schematic.
Change the value of R4 from 5600 to 5100.
Page 6-3, Reference Designator A2 R4. Change Part
Number and Description from 0686-5625, R: fxd comp
5.6 kilohm ±5% JhW to 0686-5125, R: fxd 5.1 kilohm
±5% %W.
Delete the relative MFR and MFR. Part Number
references.
a. Connect the 461 A as shown in Figure 5~2.
CHANGE NO.6 applies to Serial Numbers 0946A05761
and above for the Model 461A.
b. Set the 461A GAIN (DB) switch to 40.
c. Set the 654A frequency to 500 kHz and
minimum OUTPUT AMPLlTUOE.
Page 6-15/5·16. On the schematic diagram change the
followlnq capacitor values:
d. Set the 331 A -to measure RMS VOLTS using
the 1 VOLT METER RANGE. Adjust the 654A
OUTPUT for a 0.5 volt Indication on
the 331A
Meter.
Ref. Deslq.
CB. Cl0
C21. C27. C32
From
2.2 pF
22pF
To
6.8 pF
2.2 pF
DISTORTION ANALYZER
hp 331A
AMPLIFIER
TEST OSCILLATOR
hp 654A
i
00
hp 461A
500 FEEO-THRU
~ I<,~'I
@0(O'
n@ on
TERMINATION
o@@
hp 1I048C
~ ~@
-s-
~© @
,$e@
CIlIIJ@
o@
QATTENUATOR. OPTION
40
t~ 1KNOWN ACCURACY)
hp8491A
Figure 5-2.
3 August 1977 Supplement A for 00461:90006

Page 2 Model 461
A/462A
Page 6·3. Table 6·1. Change the following part numbers:
Ref.Oesig. From To
CHANGE NO.9 applies to Serial Numbers 0946A06021
and greater for the Model 461A, and Serial Numbers
0947 A01786 and greater for the Model 462A.
CHANGE NO.7 For All Serial Numbers.
C9, Cl0 0180.Q155
C21, C27; C32 0160·0170
0180·1701
0160·0128
Page 6-4. Change the part numbers of L 15, 16 to 9140-
0179 (Coil: 22UHI Otv 2. Add to Misc. Parts -hp- Part
Number 0360·1668 (Term Strip for L15, L161 Otv 1.
Page 1·1, Table 1-1. Change the Frequency Response
Specification to: Frequency Response: ±1 dB. 1 kHl to
150 MHz when operating Into a 50 nresistive load.
Page 5·2. Change Paragraph 5-8 as follows:
5·8, 50 kHz Gain Check (461A and 462AI;
Output Voltage Check (461Al.
b. Set the oscillator to 50 kHz and oscillator
amplitude to read 0 dB on the . 10 dB range of the
ae voltmeter.
Page 5-3. Change Paragraph 5·9{b) and (e) as follows:
b. Set the oscillator frequency to 50 kHz and
adjust its amplitude to read 0 dB on the . 10 dB
range of the ae voltmeter.
e. Record the error at 2 MHz for use in Para-
graph 5-12. The reference for high frequency
response must be 50 kHz.
Page 54. Change Paragraph 5-12Ic) and (f) as follows:
c. Increase
the amplitude of the signal genera-
tor to read 0 dB on the 0 dB range of the RF Volt-
meter. (Include
the variation from the 50 kHz
reference as recorded in Paragraph 5-9, Step e.)
f. Connect as in position B. The ac voltmeter
must read
the reference at 50 kHz (0 dB on the
odB ranqel ±1dB or less.
ERRATA
Page 5·8, Paragraph 5·22. Steps d. e and f are printed
twice. Delete
the second set on top right column.
Page 5-8. Paragraph
5·23(b). Change Step bto read: Con-
nect
the ac voltmeter to position "A" and adjust the out-
put of
the oscillator for a reading on the ac voltmeter of
·10 d8 at 50 kHz.
CHANGE NO.8 applies to serial numbers 0946A05836
and greater for the Model 461A, and serial numbers
0947A01786 and greater for the Model 462A,
Page 6·4, Table 6-1. Change the part number for XFl
from 1400·0084 to 2110·0170-Post and 2110·0465-
Cap. Add the following parts as associated hardware:
CHANGE NO. 10 Applies to all Serial Numbers.
Page
6·4. Change the part number of the "Insulator For
01" from 0340·0580 to 0340.Q583, Reference Change
No.4.
2110·0467
1400·0090
2190·0054
Hex Nut
Washer
Washer
orv 1
Otv 1
OW 1

Table of Contents Models 461A/462A
TABLE OF CONTENTS
II INSTALLATION 2-1
III OPERATINGINSTRUCTIONS 3-1
I GENERALINFORMATION I-I
Section Page
5-3. Test Equipment Required 5-1
5-5. Performance Checks
5-1
5·8. 500 kHz Gain Check
(461A and 462A); Output
Voltage Check (46IA) 5-2
5-9. Low Frequency Response
Check (46IA) 5-3
5·10. Distortion Check (461A) 5-3
5-11. NoiseCheck (461A and 462A)
54
5·12. High Frequency Response
Check (46IA)
54
5-13. Pulse Response Check (462A) , 54
5·14. Pulse Delay Time
Check (462A) 5·5
5·15. MaximumOutput Check (462A) 5-6
5·16. Pulse Duration Check (462A) 5·6
5-17. Overload Recovery
Check (461A and 462A) 5-7
5-18. Panel Removal and Replacement 5·8
5-20. Calibration Procedure 5·8
5-22. Power Supply (461A and 462A) 5-8
5·23. GainCalibration
(461A and 462A) 5-8
5-24. Frequency Response
Calibration (461A) 5-8
5-25. Preliminary Frequency
Response Alignment 5·9
5·26. Pulse Response Calibration 5-10
5-27. Etched Circuit Boards .5-12
5·31. Troubleshooting Procedure 5-12
Page
Page
I-I. GeneralInformation I-I
14. Accessories Available. . . . . . . . . . . .. I-I
1-6. Instrument Identification 1-2
3-1. Introduction
3-1
3·3. Front and Rear Panel Description 3-1
3·5. Operating Instructions. . . . . . . . . . . . 3·1
3-7. Impedance Matching
3-1
3-9. Cascading Amplifiers 3-2
2-1.
Introduction................... 2-1
2-3. Initial Inspection. . . . . . . . . . . . . . .. 2·1
2-5. Power Requirements
2-1
2-7. Grounding Requirements 2-1
2-10. Installation 2-1
2-12. Bench Mounting
2-1
2-14. Rack Mounting 2-1
2-16. Repackagingfor Shipment 2·1
Section
Section
Section Page Section Page
IV THEORY OF OPERATION 4-1 VI REPLACEABLE PARTS 6-]
4-1. GeneralDescription 4-1
4-4. AmplifierCircuits 4·1
4-7. Power Supply 4-1
6·1. Introduction
6-1
6-3. Ordering Information 6·]
6-5. Non-listed Parts , 6·1
Section
Page
Appendix
VMAINTENANCE 5-]
5-], Introduction 5-1
A CODELIST OF MANUFACTURES
B SALESAND SERVICE OFFICES
C
MANUAL BACKDATING CHANGES
LIST OF TABLES
Number Page Number Page
I-I. Specifications ,. 1-]/1-2
5-], Test Equipment Required 5-D/5-1/5-2 5-2. Troubleshooting Tips 5-13
6-1. ReplaceableParts 6-2
ii

•Models461A/462A
LIST OF ILLUSTRATIONS
------ --------
Table of Contents
Nnmber Page
Number Page
ce
1·1. Model 461A/462A Wideband
Amplifiers 1·0
3·1. Front and Rear Panel
Description .~-;- - 3-1
3-2. Operating Instructions 3·2
3·3. Cascading461A or 462A Amplifiers
with Input Protective Circuit 3-2
4·1. Simplified-BlockDiagram .4·1
5·1. Gain Check Setnp 5·3
5·2. Distortion Check Setup 5·3
5·3. High Freqnency Response
Check 5-4
5-4. Pulse Response Check Setup 5·5
5·5. Pulse Delay Check Setup 5-6
5-6. Pulse Duration Check Setup 5·6
5-7. Panel Removal and Replacement 5·7
5-8. Preliminary Frequency Response
Calibration Setup 5·9
5·9. Input and Output Pulses
of462A 5·10
5-1O.BottomView
.-.- 5·11
5.II.TopView 5·11
5·12.Schematic Diagramof
Model 461A/462A 5-15/5·16
6-1. Exploded View of
Al Attenuator 6·2
iii

Section I
1-0
Model 462A
WideBand Amplifier
Figure
I-I. Hewlett-Packard Model 46lA/462A
Wideband Amplifier
Models 461A/462A
Model 461A
Wide Band Amplifier
u
•\
}
•
•

•Section I
SECTION !
GENERAL INFORMATION
1-1. GENERAL INFORMATION.
J-2. The -hp- Model 461A Wide Band Amplifier is
used primarily where flatness is important. The -hp-
Model 462A Wide Band Amplifier is used primarily
where rise time is important. The Model 461 }''-
frequency response is II dB from 1kHz to 150 Mliz.
The Model 462A rise and fall times are less than .:;.
nanoseconds. Either 40 dB or 20 dB gain can be
selected with the front panel GAIN (DB switch). The
Models 46JA and 462A are shown in Figure J-L The
specifications for both instruments are given in Table
J.l.
1-3. Since the Models 461 A and 462A are nearly
identical, this manual will discuss the instruments in
terms of the Model 46J A. The Model 462A will be
mentioned only when its operation differs from that
of the Model 461A.
1-4. ACCESSORIES AVAILABLE.
J -5. The .hp- 1l048C 50-ohm feedthrough
termination is an available accessory that is connected
at the output of the Model 461A. The feed through
termination should be used to ensure that the Model
461A is operating into its rated impedance in the
event the instrument is connected to a device with an
impedance greater than 50 ohms.
Table 1-1. Specifications.
•
MODEL46U
Frequency Range : 1 kHz to 150 MHz.
Frequency Response: dB. 1 kHz to 150 MHz
when operating into a 50 ohm resistive load (SOC
kHz reference).
Gain at 500 kHz: 40 dB -cl-O.S dB: or 20 dB +;-1.0
dB, selected by front panel switch (inverting).
MODEL 462A
Pulse Response:
Leading Edge and Trailing Edge
Rise Time: Less than 4nanosecono:
Overshoot: Less than 5Cj(
Pulse Overload Recovery: Less than
times overload.
Pulse Duration fOI J.O% Droop: ~,C 'is.
us for
lI
I
101
- I
Input Impedance: Nominal 50 ohms.
Maximum Input: 1 volt nns or 2. volts pop pulse.":
Maximum de InpUT'
Equivalent Input Noise Level- Less than 40 uvin
40 dB position when Laded with 50 ohms.
)npu , Impedance: Nominal 50 ohms
Maximum
Output
resistive ioac. ; volt rms
t: :? volts pop pulse."
rated .oac
•Overload
Recover' Lc~~ ::i-!,ii~ -nicroseconc ic: ~:~
times overicsc
resistive loao
i:

Section I
Table I-I. Specifications (Cont'd)
GENERAL
Models 461A/462A
Power Supply: 115 or 230 V +/.10%, 48 to 440 Hz,
5 watts.
Dimensions: 5 1/8 in. (13 em) wide, 3 in. (7,6 em)
high, II in. (27,9 cm) deep.
Weight:
Net:
4lbs (l,8 kg).
Shipping: SIbs (2,3 kg.).
Accessory Furnished: Detachable power cord.
Accessory Available: -hp-
1l048C, 50 ohm
feedthrough termination.
1-6. INSTRUMENT IDENTIFICATION.
1-7. Hewlett-Packard uses a two-section serial
number. The first section (prefix) identifies a
series of instruments. The last section (suffix)
identifies a particular instrument within the series.
If aletter is included with the serial number, it
identifies the country in which the instrument was
1-2
manufactured.
If the serial prefix of your instru-
ment differs from the one on the title page
of this
manual, achange sheet will be supplied to make
this manual compatable with newer instruments or
the backdating information in Appendix C will
adapt this manual to earlier instruments. All
corresponcence with Hewlett-Packard should in-
clude the complete serial number.

•Models461A/462A
2·1. INTRODUCTION.
SECTION II
INSTAllATION
2·10. INSTALLATION.
Section 11
•
•
2·2, This section contains information and
instructions necessary for the installation and
shipping of the Model 461A Amplifier. Included are
initial inspection procedures, power and grounding
requirements, installation information, and
instructions for repackaging for shipment.
2·3. INITIAL INSPECTION.
24. This instrument was carefully inspected both
mechanically and electrically before shipment. It
should be free of mars and scratches and in perfect
electrical order upon receipt. To confirm this, the
instrument should be inspected for physical damage
in transit. Also check for supplied accessories, and
test the electrical performance of the instrument
using the procedure outlined in Paragraph 5-5.
If
there is damage or deficiency, see the warranty on the
inside front cover
of this manual.
2·5. POWER REQUIREMENTS.
2·6. The Model 461A can be operated from any
source of 115 or 230 volts (+/·10%), at
4810440
Hertz. With the instrument disconnected from the ac
power source, move the 115/230 V slide switch on
the rear panel until the desired line voltage appears.
Power dissipation is 5 watts maximum.
2·7. GROUNDING REQUIREMENTS.
2-8. To protect operating personnel, the National
Electrical Manufacturers' Association (NEMA)
recommends that the instrument panel and cabinet be
grounded. All Hewlett-Packard instruments are
equipped
with athree-conductor power cable which,
when plugged into an appropriate receptacle, grounds
the instrument.
The offset pin on the power cable
three-prong connector is the ground wire.
2-9. To preserve the protection feature when
operating the instrument from a two-contact
outlet,
use a three-prong to two-prong adapter and connect
the green pigtail on the adapter to ground.
2·11. The Model 46lA is fully transistorized;
therefore, no special cooling is required. However, the
instrument should not be operated where the ambient
temperature exceeds 55° C(1310F) or the relative
humidity exceeds 95%.
2·12. BENCH MOUNTING.
2·13. The Model 46lA is shipped with plastic feet
and tilt stand in place, ready for use as a bench
instrument.
2·14. RACK MOUNTING.
2·15. The Model 461A may be rack mounted by
using an adapter frame (·hp· Part No. 5060.(797).
The adapter frame is a rack frame that accepts any
combination
of submodular units. It can be rack
mounted only. For additional information, address
inquiries to your -hp- Sales and Service Office. (See
Appendix B for office locations.)
2·16. REPACKAGING FOR SHIPMENT.
2-]7. The following paragraphs contain a general
guide for repackaging of the isntrument for shipment.
Refer to Paragraph 2-18 if the original container is to
be used; 2-19 if it is not.
If you have any questions,
contact
your local -hp- Sales and Service Office. (See
Appendix B for office locations.)
----NOTE----
If the instrument is to be shipped
to Hewlett-Packard for service or
repair, attach a tag to the
instrument identifying the owner
and indicating the service or repair
to be accomplished; Include the
model number and full serial
number
of the instrument. In any
correspondence, identify the
instrument by model number, serial
number, and serial number prefix.
2-1

Section II
2·18.
If original container is to be used, proceed as
follows:
a. Place instrument in original container if
available.
If it is not available, a suitable
container can be purchased from your
nearest -hp-Salesand ServiceOffice.
b. Ensure that container is well sealed with
strong tape or metal bands.
2-19.
If original container is not to be used, proceed
as follows:
2-2
Models461A/462A
a. Wrap instrument in heavy paper or plastic
before placingin an inner container.
b. Place packing material around all sides of
instrument and protect panel face with
cardboard strips.
c. Place instrument and inner container in a
heavy carton or wooden box and seal with
strong tape or metal bands.
d. Mark shipping container with "DELICATE
INSTRUMENT," "FRAGILE" etc.
•

•Models
461A/462A
3·1. INTROOUCTION.
SECTION III
OPERATING INSTRUCTIONS
3·5. OPERATING INSTRUCTIONS.
Section 1II
3·2. The Model 461A can be used to faithfully
amplify signals in the IKHz to 150 MHz range.
Gai~
settings of 20 dB or 40 dB may be selected with the
front panel GAIN (DB) switch. The Model 461A will
operate within specifications only when its
output is
terminated in 50 ohms.
3·3. FRONT ANO REAR PANEL OESCRIPTION.
34. Figure 3·1 describes the function of all the
controls and indicators on both the front and rear
panel.
3-6. Figure 3-2 contains the operating instructions
for the Model 461A. Each instruction is keyed
to a
drawing
of the front panel.
3·7. IMPEOANCE MATCHING.
3-8. Both the input impedance and the output
impedance of the Model 461 A arc 50 ohms. The
Model 461 A
out put must be connected to a 50 ohm
load
if it is to operate within specifications. If the
input impedance of the load is not 50 ohms, a
terminating impedance
of 50 ohms must be
IKC-150MC
>on
INPUT
~
•
d;;;., 461A AMPLIFIER
o,q:J ,q:"LETT PM~A~~,
GAIN !OBI
OFF 20 40
~
o
'OA
OUTPUT
~
-
,,5/<30 fIO<.-"
<E-o<O'\.-
FUS[
Ie
'" 0," 0] I
·,oln~,·.
~
[9
<50~'
U
e
5£Ul TOR
8-
U
!ill:]
Uo a
--
1\ I
JJJ
46IA-B-1828A
3·J
Figure 3·1.
Front and Rear Panel Description
•
CD GAIN (DB) switch: Applies primary power and
selects gain.
050 OHM INPUT connector: Connects input
signal to
the instrument. DO NOT APPLY
MORE
THAN I VAC OR 2 VDC TO INPUT.
CD 50 OHM OUTPUT connector: Connects
amplified
output to load. Output must be
terminated in 50 ohm. VOLTAGE LEVEL AT
OUTPUT MUST NOT EXCEED ·6 VOLTS DC
OR +0.6 VOLTS DC.
CD AC POWER connector: Connects primary
power to the instrument.
CD LINE VOLTAGE: Selects either J15 volls ac or
230 volts ac primary power.
CD Fuseholder: Contains a 1/4 ampere fast-blow
fuse for
both liS and 230 volt operation.

Section III Models461A/462A
connected across the Model 461A output. The -hp-
Model II048C· 50 ohm Feedthrough Termination is
recommended for this purpose. The Model II048C
may be easily connected in series with the Model
461A output.
3-9. CASCADING AMPLIFIERS.
3-10. The Model 461A will amplify small signals in
the 5 to 50 millivolt range to an amplitude
of 0.5
volts with minimum distortion. Three 651A's or
652A's can be cascaded with a minimum input
of 40
microvolts. For protection
of the first instrument, a
diode voltage limiter with two diodes in parallel (see
Figure 3-3) can be used. To protect the diodes at high
voltages a 500 ohm resistor must be placed in series
with the input signal. In doing this a ten to one
attenuation is obtained for the first amplifier.
Therefore the first amplifier must be set to 40 dB
gain while the other two should be set to 20 dB gain.
The second two amplifier inputs are protected by the
clipped output
of the preceding amplifier. Should
larger output signals be desired, the Model461A's can
be cascaded with other amplifiers. Concerning
frequencies from 10 MHzto 150
MHz, the -hp-230A
Power Amplifier can be used in the fourth cascade
position.
LOAD
3 2
hp 461A
WIDE BAND
AMPLIFIER
SIGNAL SOURCE
DO NOT APPLY MORE THAN 1 VAC OR 2 VDC TO INPUT
TERMINALS. VOLTAGE LEVEL APPLIED TO OUTPUT
MUSTNOT
EXCEED -6VOLTS DC OR +0.6 VOLTSDC.
CD Connect the 1 KHz to 150 MHz frequency
source to the input
of the Model461A.
CD Connect the output of the Model 461A to a
50·ohm load.
Q)Set Power and Gain Switch to the desired gain
setting (20 or 40 dB).
---NOTE---
The maximum output voltage
obtainable from the Model
461A is 0.5 volts rms
(l Volt
pop for Model 462A). Thus
the maximum input voltage
that can be applied, without
distortion, is 50 mv on the 20
dB range, and 5
mvon the 40
dB range.
Figure3-2. Operating Instructions
5000
IW
SILICON DIODES ,
(FAST SWITCHING) :
AMPLIFIERS \f
hp 461A/462A
~
@o
~
lie @o
~
~ e@o
~
II
<!l II II
<!l II )I \!l II
GAIN GAIN GAIN
+40DB
+20DB +20DB
Figure3-3. Cascading 461A or 462A Amplifierswith Input Protective Circuit
3-2
6.
~

•Models 461A/462A
SECTION IV
THEORY OF OPERATION
Section IV
•
4·1. GENERAL DESCRIPTION.
4-2. The Models 461A and 462A Amplifiers are
essentially identical. In the Model 462A some
of the
component values are changed slightly to improve its
pulse response. In this section both instruments will
be presented in terms of the Model 461A.
4·3. Figure 4-1 shows a simplified block diagram
of
the Model 461A. The amplifier is a five stage,
stagger-tuned, cascaded amplifier with emitter
follower input and output stages. The gain isswitched
from 40 dB to 20 dB by attenuating the input by 20
dB. The power supply is a conventional series
regulated supply with +15 volt and -IS volt outputs.
4·4. AMPLIFIER CIRCUITS.
4-5. Figure 5-12 shows the schematic diagram of the
Model 461A. A3Q3 is the input emitter follower,
matching the 50 ohm input impedance to the input
impedance of the amplifier. Transistors A3Q4
through A3Q8 constitute a live stage, RC coupled,
cascaded amplifier. Each stage has a gain
of 8.4 dB. 2
dB is lost in the input and output emitter followers,
givingthe amplifier a total gain of 40 dB.
4-6. Each stage has an an LR feedback circuit with
an adjustable inductor. The feedback circuit in each
stage controls the overall gain
of the amplifier at a
different frequency lso the amplifier must be
stagger-tuned, There is some interaction between the
stages at certain frequencies. A3Q9 is the output
emitter follower, and it matches the amplifier output
to a50 ohm output impedance.
4-7. POWER SUPPl Y.
4-8. The power supply generates +15 volts and -IS
volts bias supply to the amplifiers. Breakdown diode
A2CR3 establishes a IS volt reference. Control
transistor A2Q2 detects differences between the
reference voltage and the supply
output, and its
output controls the series regulator Ql.
•
IINPUTI
IOUTPUT I
ATTENUATOR
->
EMITTER ---> AMPLIFIERS
--..-.
EMITTER ,
~
,
,FOLLOWER FOLLOWER
AI 04-08
~
03
09
~
I
I
IPRIMAR)'
I
oPOWER 8 GAIN SWITCH
,
51,53
\
\\SERIES
PRIMARY REGULATED !
POWER POWER SUPPLY
OJ -02-
.'_L.",'''"
I
Figure 4-1. Simplified Block Diagram
4-1

Section V
Table 5-1. Test Equipment Required
Models 461 A/462A
INSTRUMENT CRITICAL USE RECOMMENDED
TYPE SPECIFICATIONS MODEL
Wide Range
Output: 0.5 volts Low Freq. Response -hp- Model 654A
Oscillator Impedance: 50 ohms and Gain Check Test Oscillator
Freq. Range: IkHz to
10 MHz
Level: 0.5%
Distortion: less
than 0.5%
Logarithmic Accuracy: +/-1% reading Calibration, -hp- Model
400EL
Voltmeter
to +/-5% reading Low Freq. Response AC Voltmeter
Freq. Range: IkHz to and Gain Check
10 MHz
DB range: -80 dB to +50 dB
Attenuator
Attenuation: 20 dB Gain Check -hp-Model 8491A
Accuracy: 0.1 dB
(l kHz to Freq. Response Check Option 20 with
150 MHz) and Calibration known accuracy
Attenuator
Attenuation: 40 dB Gain Check -hp-Model 8491 A
Accuracy: 0.1 dB (I kHz Freq. Response Check Opiton 40 with
to ISO MHz and Calibration known
accuracy
Distortion Freq. Range: IkHz to Distortion Check -hp-Model 33IA,
Analyzer
500 kHz 333A or 334A
Sensitivity: Measure 5% Distortion Analyzer
Distortion
Accuracy: +/-3%
RF Millivolt- Freq. Range: 500 kHz to Frequency Response -hp-Model 340GA
meter 150 MHz Check and Calibration RF Sampling
Accuracy: from +/-3% to Voltmeter
+/-5% f.s,
DB Range: -50 to +20 dBm
Multimeter Accuracy: +/-1% of full Power Supply Checks -hp- Model 412A
including DC scale and Troubleshooting Volt-Ohm-Ammeter
Voltmeter
Input Resistance
greater
than 10 Megohm
Signal Generator Freq. Range: 100 kHz to High Freq. Response -hp-Model 860 IA
Sweeper
110 MHz Check and Adjustment Generator/Sweeper
Output: 0.5 V
Flatness: 0.20 dB over
full range
Impedance: 50 ohms
Oscilloscope Bandwidth: de to 50 MHz Pulse Droop -hp- Model 180C
with horizontal magnifier Calibra tion and Oscilloscope with
Sensitivity: 0.005V/cm Overload Check 1801A and 1820A
to
20V/cm plug-ins
5-0
.).
~;'