HP 8447D Operation manual

OPERATION AND
SERVICE MANUAL
8447D
8447E
8447F
AMPLIFIER
0.1—1300 MHz

CERTIFICATION
Hewlett-Packard Company certifies that this product met its published specifications at the time of
shipment from the factory. Hewlett-Packard further certifies that its calibration measurements are
traceable to the United States National Bureau of Standards, to the extent allowed by the Bureau’s
calibration facility, and to the calibration facilities of other International Standards Organization
members.
WARRANTY
This Hewlett-Packard instrument product is warranted against defects in material and workmanship
for a period of one year from date of shipment. During the warranty period, Hewlett-Packard Com¬
pany will, at its option, either repair or replace products which prove to be defective.
For warranty service or repair, this product must be returned to a service facility designated by HP.
Buyer shall prepay shipping charges to HP and HP shall pay shipping charges to return the product to
Buyer. However, Buyer shall pay all shipping charges, duties, and taxes for products returned to HP
from another country.
HP warrants that its software and firmware designated by HP for use with an instrument will execute
its programming instructions when properly installed on that instrument. HP does not warrant that the
operation of the instrument, or software, or firmware will be uninterrupted or error free.
LIMITATION OF WARRANTY
The foregoing warranty shall not apply to defects resulting from improper or inadequate maintenance
by Buyer, Buyer-supplied software or interfacing, unauthorized modification or misuse, operation
outside of the environmental specifications for the product, or improper site preparation or main¬
tenance.
NO OTHER WARRANTY IS EXPRESSED OR IMPLIED. HP SPECIFICALLY DISCLAIMS THE IM¬
PLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
EXCLUSIVE REMEDIES
THE REMEDIES PROVIDED HEREIN ARE BUYER’S SOLE AND EXCLUSIVE REMEDIES. HP
SHALL NOT BE LIABLE FOR ANY DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSE¬
QUENTIAL DAMAGES, WHETHER BASED ON CONTRACT, TORT, OR ANY OTHER LEGAL
THEORY.
ASSISTANCE
Product maintenance agreements and other customer assistance agreements are available for Hewlett-
Packard products.
For any assistance , contact your nearest Hewlett-Packard Sales and Service Office. Addresses are
provided at the back of this manual

WhlM HEWLETT
mHHM PACKARD
OPERATION AND SERVICE MANUAL
8447D
8447E
8447F
AMPLIFIER
0.1—1300 MHz
SERIAL NUMBERS
This manual applies directly to instruments with
the following serial number prefixes:
8447D: 1937A
8447E: 1937A
8447F:1937A
With changes described in MANUAL BACK¬
DATING CHANGES, this manual also applies
to instruments with serial numbers prefixed
0933A, 1145A, 1529A, 1616A, 1644A, 1726A.
For additional important information about serial
numbers, see INSTRUMENTS COVERED BY
MANUAL.
Copyright © 1973, 1980, HEWLETT-PACKARD COMPANY
1400 FOUNTAIN GROVE PARKWAY, SANTA ROSA, CALIFORNIA, 95404, U.S.A.
MANUAL PART NUMBER 08447-90033
Printed: SEPTEMBER 1980

SAFETY CONSIDERATIONS
GENERAL
This product and related documentation must be
reviewed for familiarization with safety markings
and instructions before operation. This product has
been designed and tested in accordance with inter¬
national standards.
SAFETY SYMBOLS
SAFETY EARTH GROUND
This is a Safety Class I product (provided with a
protective earthing terminal). An uninterruptible
safety earth ground must be provided from the
main power source to the product input wiring ter¬
minals, power cord, or supplied power cord set.
Whenever it is likely that the protection has been
impaired, the product must be made inoperative
and be secured against any unintended operation.
Instruction manual symbol: the
product will be marked with this
symbol when it is necessary for
the user to refer to the instruc¬
tion manual (refer to Table of
Contents).
BEFORE APPLYING POWER
Verify that the product is configured to match the
available main power source per the input power
configuration instructions provided in this manual.
Indicates hazardous voltages.
X
Indicates earth (ground) terminal.
WARNING
The WARNING sign denotes a
hazard. It calls attention to a
procedure, practice, or the like,
which, if not correctly performed
or adhered to, could result in
personal injury. Do not proceed
beyond a WARNING sign until
the indicated conditions are fully
understood and met.
CAUTION
The CAUTION sign denotes a
hazard. It calls attention to an
operating procedure, practice, or
the like, which, if not correctly
performed or adhered to, could
result in damage to or destruc¬
tion of part or all of the product.
Do not proceed beyond a CAU¬
TION sign until the indicated
conditions are fully understood
and met.
If this product is to be energized via an autotrans¬
former make sure the common terminal is con¬
nected to the neutral (grounded side of mains
supply).
SERVICING
WARNING |
Any servicing, adjustment, maintenance,
or repair of this product must be per¬
formed only by qualified personnel
Adjustments described in this manual
may be performed with power supplied
to the product while protective covers
are removed. Energy available at many
points may, if contacted, result in per¬
sonal injury .
Capacitors inside this product may still
be charged even when disconnected from
its power source.
To avoid a fire hazard, only fuses with
the required current rating and of the
specified type (normal blow, time delay,
etc.) are to be used for replacement.

Model 8447D/E/F
Page 1
1. GENERAL INFORMATION
2. The HP Models 8447D, 8447E and 8447F are
general purpose, wideband amplifiers. Each instru¬
ment consists of a power supply and one or two
thin film, hybrid, integrated circuit amplifiers. The
thin film amplifiers are hermetically sealed and
feature low noise, low distortion, flat frequency
response, and long term stability and reliability.
3. The HP Model 8447D Amplifier is a pre¬
amplifier that provides 26 dB of gain to signals
from 100 kHz to 1.3 GHz. It can be used to
increase the sensitivity of any lab, shop or field
device operating within its frequency range.
4. The HP Model 8447E Amplifier is a power
amplifier that provides 22 dB of gain to signals
from 100 kHz to 1.3 GHz. It can be used to
increase the output power of signal generators,
-sweepers and similar devices operating within its
frequency range.
5. The HP Model 8447F Amplifier contains a
preamplifier and a power amplifier — the same
thin film amplifiers used in the HP 8447D and
HP 8447E. The input and output ports of both
amplifiers are available on the front panel; they
can be used separately or cascaded to provide
48 dB of gain.
Table 1. Specifications
8447D
PRE AMP
844 7E
POWER AMP
844 7F
PRE AMP
POWER AMP
Frequency Range
0.1 to 1300 MHz
0.1 to 1300 MHz
0.1 to 1300 MHz
0.1 to 1300 MHz
Typical 3 dB Bandwidth
.05 to 1400 MHz
.05 to 1400 MHz
.05 to 1400 MHz .05 to 1400 MHz
Mean Gain (20° - 30°C)
26 dB Minimum
22 dB ±1.5 dB
26 dB Minimum
22 dB ±1.5 dB
Gain Flatness Across
Full Frequency Range
±1.5 dB
±1.5 dB
±1.5 dB
- * --- t -
± 1.5 dB
Noise Figure
< 8.5 dB
<11 dB
(Typical)
< 8.5 dB
— : — : -
<11 dB
(Typical)
Output Power for 1 dB
Gain Compression
>+7 dBm
(Typical)
>+-15 dBm
>+7 dBm
(Typical)
>+15 dBm
Harmonic Distortion
-30 dB for
+10 dBm output
—30 dB for
0 dBm output
(Typical)
—30 dB for
+10 dBm output
Typical Output for
< — 60 dB
Harmonic Distortion
-30 dBm
“20 dBm
-30 dBm
“20 dBm
VSWR, 1 to 1300 MHz
<2.0 INPUT
<2.2 OUTPUT
< 2.2
< 2.0 INPUT
< 2.2 OUTPUT
<2.2
Impedance
500
50 0
50 0
500
Reverse Isolation
>40 dB
>40 dB
>40 dB
>40 dB
Maximum DC Voltage Input
+ 10 V
±10 V
± 10 V
±10 V
Typical Risetime
400 psec
420 psec
400 psec
420 psec
Typical Group Delay
1.1 nsec*
1.5 nsec**
1.1 nsec*
1.5 nsec**

Page 2
Model 8447D/E/F
Table 1. Specifications (Cont’d)
8447D
8447E
8447F
PRE AMP
POWER AMP
PRE AMP
POWER AMP
Net Weight;
Option 001
3 lbs., 8 oz.
(1,59 kg.)
3 lbs., 14 oz.
(1,75 kg.)
3 lbs., 10 oz.
(1,64 kg.)
4 lbs., 1 oz.
(1,84 kg.)
3 lbs., 8 oz.
(1,59 kg.)
3 lbs., 14 oz. (1,75 kg.)
Option 010
Option Oil
3 lbs., 10 oz.
(1,64 kg.)
4 lbs., 1 o
2. (1,84 kg.)
.
Dimensions
8-1/2 inches (216 mm) by 5-1/8 inches (130 mm)
by 3-3/8 inches (85, 8 mm)
Power Requirements
115 or 230 Vac ±10%, 48 to 440 Hz, 15 Watts, 27 VA max.
* Variation over any 50 MHz band from 0.1 - 1300 MHz is typically < 0.15 nsec.
*’ ► Variation over any 50 MHz band from 0.1 — 1300 MHz is typically < 0.25 nsec.
6. OPTIONS
7. The HP Model 8447D is a single preamplifier
with BNC connectors. However, to provide flexi¬
bility, three options are offered:
a. Option 001 - dual preamplifier, BNC
connectors.
b. Option 010 — single preamplifier, Type N
connectors.
c. Option Oil — dual preamplifier. Type N
connectors.
8. The HP Model 8447E is a power amplifier
with BNC connectors; one option is offered:
Option 010 — Type N connectors.
9. The HP Model 8447F is a preamplifier and a
power amplifier with BNC connectors; one option
is offered: Option 010 — Type N connectors.
NOTE
AH dual amplifier options with Type N
connectors are furnished with a rigid
coaxial cable (W6) that can be used to>
cascade the amplifiers with minimum
loss.
10. INSTRUMENTS COVERED BY MANUAL
11. This manual fully documents the HP 8447D,
HP 8447E and the HP 844 7F. Any references in
the manual apply to all three amplifiers unless
otherwise noted.
12. Each amplifier has a ten digit serial number
on the serial plate on the rear panel; the first five
digits of the serial number are a prefix. The
contents of this manual apply directly to instru¬
ments with the same serial number prefix as listed
after SERIAL NUMBERS on the inside title page.
13. Revisions required to adapt the manual to
other serial number prefixes are contained in a
yellow “Manual Changes” insert supplied with the
manual. For information about serial number
prefixes not listed on the title page or in the insert,
contact your nearest Hewlett-Packard office.
14. INITIAL INSPECTION
15. Mechanical Check
16. If damage to the shipping carton is evident,
ask the carrier’s agent to be present when the
instrument is unpacked. Inspect the instrument for
mechanical damage. Also check the cushioning
material for signs of severe stress.

Model 8447D/E/F
Page 3
17. Performance Check
18. The electrical performance of an amplifier
should be verified upon receipt. Performance
checks suitable for incoming inspection are given
in paragraphs 55 through 58.
19. Claims for Damage
20. If the instrument is mechanically damaged in
transit, notify the carrier and the nearest Hewlett-
Packard field office immediately. A list of field
offices is contained in the back of this manual.
Retain the shipping carton and padding material
for the carrier’s inspection. The field office will
arrange for replacement or repair of your instru¬
ment without delay for claim settlements against
the carrier. Before shipment, this instrument was
inspected and found free of mechanical and elec¬
trical defects. If there is any deficiency, or if
electrical performance is not within specifications,
notify your nearest Hewlett-Packard sales and
service office.
21. PREPARATION FOR USE
22. Power Requirements
23. The amplifier operates from 115 or 230 volts
ac line voltage at any line frequency between 48
and 440 Hz. A slide switch on the rear panel is set
to the correct position for the line voltage available.
24. Power Cable
25. To protect operating personnel, the National
Electrical Manufacturer’s Association (NEMA) rec¬
ommends that the instrument panel and cabinet be
grounded. All Hewlett-Packard instruments are
equipped with a three-conductor power cable
which, when plugged into the appropriate recep¬
tacle, grounds the instrument. The offset pin on
the power cable’s three-prong connector is the
ground wire. The power cord and power input
connector meet the specifications established by
the International Electrotechnical Commission
(IEC).
26. Mating Connectors
27. Mating connectors used with the amplifier
should be 50-ohm type BNC male. If the amplifier
has the optional Type N connectors, use Type N
male connectors that are compatible with US
MIL-C-39012.
28. Operating Environment
29. The operating range of the amplifier is from
0°C to +5 50 c. The amplifier can be stored in a
temperature range of —40°C to +75°C.
30. Bench Mounting
31. The amplifier is equipped with plastic feet
and tilt stand in place, ready for use as a bench
instrument.
32. Rack Mounting
33. The amplifier may be rack mounted by using
an adapter frame. The adapter frame is a rack
frame that accepts several combinations of sub-
modular units. For additional information, address
inquiries to your nearest Hewlett-Packard sales
and service office.
34. STORAGE AND SHIPMENT
35. Packaging
36. The following paragraphs contain a general
guide to repackaging of the instrument for ship¬
ment. Refer to paragraph 38 if the original
container is to be used; refer to paragraph 40
if it is not.
37. If the instrument is to be shipped to Hewlett-
Packard for service or repairs, attach a tag to the
instrument identifying the owner and indicating
the service or repair required; include the model
number and full serial number of the instrument.
38. Original Packaging
39. If original container is to be used, proceed as
follows:
a. Place instrument in original container. If
it is not available, a suitable container can be pur¬
chased from your nearest Hewlett-Packard sales
and service office.
b. Be sure the container is well sealed with
strong tape or metal band.

OUTPUT
POWER
IdBml
Page 4
Model 8447D/E/F
FREQUENCY (MH2)
Gain vs. Frequency vs. Temperature
(§ F. 80 MHz
^ F„ 65 MHz
-40-30 -20-10 0 +10+20+30
INPUT POWER (dBm)
/ SiS F, 130QMHZ
&//s 1
q//S F, 1280 MHz
-40 -30 -20 -10 0 +10 +20 +30
INPUT POWER (dBm)
Intermodulation Intercept Points
100 400 700 1000 1300
FREQUENCY (MHz)
n—i_i_i
SPEC
-
-»—
400 700
FREQUENCY (MHz)
Output Power (1 dB Compression) vs. Frequency
Noise Figure vs. Frequency
Figure 1. Typical Preamplifier Performance Curves

Model 8447D/E/F
Page 5
Figure 2. Typical Power Amplifier Performance Curves

Page 6
Model S447D/E/F
Table 2. Recommended Test Equipment and Accessories
Instrument Type
Minimum Specifications
Suggested
Model
Use*
Generator/Sweeper
Frequency Range: 0.1 to 110 MHz
Flatness: ±0.25 dB over full range
Output Level: +10 dBm minimum
Frequency Accuracy: 1% +100 KHz
Compatible with Network Analyzer
HP 8601A
P,T
Sweep Oscillator
Frequency Range: 0.1 to 1.3 GHz
Flatness: 0.7 dB over full range
Output Level: +10 dBm minimum
Frequency Accuracy: +20 MHz
Compatible with Network Analyzer
HP 8620A/8621A P,T
Network Analyzer
(0.1-110 MHz)
System (with a swept source) capable of
measuring amplitude of reflected signals
(return loss).
Frequency Range: 0.1 to 1300 MHz
Resolution: 0.25 dB
Accuracy: ±6%
HP 8407A
P
Network Analyzer
(0.11-1.3 GHz)
HP 8410A
Phase-Magnitude
Display
HP 8412A
Harmonic Fre¬
quency Converter
HP 8411A
S-Parameter
Test Set
HP 8745A
Universal
Extension
HP 11604A
Transmission Kit
HP 11651A
Accessory Kit
HP 11570A
Spectrum
Analyzer
RF Section
Frequency Range: 10—1300 MHz
Dynamic Range: 60 dB minimum
Scan Width: 800 MHz minimum
Spurious Responses: <-60 dB
Absolute amplitude calibration.
Variable persistance display.
HP 8555A
P
Spectrum
Analyzer
IF Section
HP 8552A
Display
Section
HP 141T
Noise Figure
Meter
Frequency Range: 0.1—1300 MHz
Noise Figure Range: 0—15 dB
HP 342A
P
VHF Noise Source
Accuracy: ±0.5 dB
Excess Noise Ratio: 6.3 +0.5 dB
HP 343A
UHF Noise Source
HP 349A

Model 8447D/E/F
Page 7
Table 2, Recommended Test Equipment and Accessories (Cont*d)
Instrument Type
Minimum Specifications
Suggested
Model
Use*
EMS Voltmeter
Voltage Range: 1 mV to 1 V (full range)
Frequency Range: 10 Hz to 10 MHz
Meter Accuracy: ±5%
HP 3400A P,A,
T
Power Meter
Power Range: —20 dBm to -+T0 dBm
Frequency Range: 10—1300 MHz
Meter Accuracy: ±1%
HP 432A/478A
P
Amplifier
Gain: 24 dB
Noise: < 8 dB
Frequency Range: 0.1 — 1300 MHz
HP 8447D
P
Digital Voltmeter
Voltage Range: 0 — 60 V
Accuracy: ±.05% ±1 digit
Resistance Range: 0 to 10 megohm
Accuracy: ±0.3% ± 1 digit
HP 3440A/3444A A,T
Double Balanced
Mixers
Frequency Range: 200 —1300 MHz
Sage Laboratories
2500 Series
P
Low Pass Filter
Cutoff Frequency: 400 MHz
Attenuation: >60 dB at 800 and 1200 MHz
- - - -.-.. .... ... .- - -
Cir-Q>Tel
FLT/2 Series
P
Attenuator 10 dB, 0.1 -1300 MHz
HP 8491A
Option 10
P
Attenuator 20 dB, 0.1-1300 MHz
HP 8491A
Option 20
P
Termination 50 ohm (BNC)
HP 11593A P
Termination 50 ohm (Type N)
HP 908A
P
Adapter
Type N Female to BNC Male
UG-349A/U
P
Adapter (2) BNC Female to Type N Male
UG-201A/U
P 1
Tee BNC
UG-274B/U P
Cable Assembly
Type N Connectors
HP 11500A P
Cable Assembly (5)
BNC Connectors
HP 10503A P
Cable Assembly BNC with test clips attached
HP 10501A
Adapter
BNC Female to Binding Post
HP 10111A
P,A,T
Adapter
BNC Male to BNC Male
UG-491A/U
p
*Use: P = Performance Test; A * Adjustments; T ■ Troubleshooting

Page 8
Model 8447D/E/F
40. Other Packing Material
41. If original container is not used, proceed as
follows:
a. Wrap instrument in heavy paper or plastic
before placing in inner container.
b. Place packing material around all sides of
the instrument and protect panel face with card¬
board strips.
c. Place instrument in a heavy carton or
wooden box and seal with strong tape or metal
band. A double-wall carton made of 200 pound
test material is adequate.
d. Mark shipping container; Delicate Instru¬
ment. Fragile, etc .
42. OPERATING INSTRUCTIONS
43. Connect the line power cable to the three-
prong rear panel socket and proceed as follows:
a. Select the line power to be used {115 or
230 volts) with the rear panel SELECTOR switch.
b. Connect the line power cable to line power.
c. Push LINE switch ON.
CAUTION i;
Do not apply power levels to the ampli¬
fier that are higher than the following:
8447D: 0 dBm
8447E: +10 dBm
8447F PREAMP: OdBm
8447F POWER AMP: +10 dBm
d. A ttach INPUT and OUTPUT cables
; CAUTION !
Power out of the 8447E and power out
of the 8447F POWER AMP can exceed
100 mW. This may be enough power to
damage sensitive circuits connected to
OUTPUT.
44. OPERATOR MAINTENANCE
45. Operator maintenance is limited to replace¬
ment of the front panel LINE switch light, the A1
Power Supply fuse, and the rear panel fuse.
46. Fuses
47. To replace the rear panel fuse (FI), remove
the rear panel fuse knob and replace the fuse (see
rear panel for value of FI).
48. To replace the A1 Power Supply (A1F1)
fuse, turn the instrument on its top. Lift tilt stand
and remove the bottom cover. Replace the fuse
on the A1 Power Supply board (see parts list for
value of A1F1).
49. Lamp Replacement
50. To replace the front panel line switch lamp
(DS1), proceed as follows:
a. Disconnect cord from rear panel receptacle.
b. Pull the white cover portion of this switch
from the instrument and then remove the lamp
from inside the cover.
c. Replace old lamp with a new lamp (see
parts list for part number of DS1).
d. Place white cover into switch receptacle.
e. Align tab on white cover with socket and
push in.
51. PERFORMANCE TESTS AND ADJUST¬
MENT PROCEDURE
52. Test equipment and accessories required to
perform maintenance are listed in Table 2. Equip¬
ment other than recommended models can be
used provided the minimum specifications are
satisfied.
53. The performance tests assume the use of a
standard amplifier with BNC connectors. If an
amplifier with Type N connectors is to be tested,
suitable adapters will have to be added to the
equipment lists.
54. One series of performance tests and one ad¬
justment procedure covers all three amplifiers.
Where required, test steps list equipment settings,
etc., for each amplifier. If a test step lists only one
setting or specification, it is valid for all three
amplifiers. Disregard references to any amplifier
not being tested.

Model 8447D/E/F
Page 9
PERFORMANCE TESTS
55. Gain Flatness, Mean Gain, and Gain Compression
Specifications
8447D
PREAMP
8447E
POWER AMP
8447F
PRE AMP
POWER AMP
Gain Flatness Across Full
Frequency Range
±1.5 dB
+ 1.5 dB
±1.5 dB
±1.5 dB
Mean Gain (20°C - 30°C
26 dB Minimum
22 dB ±1.5 dB
26 dB Minimum
22 dB ±1.5 dB
Output Power for 1 dB
Gain Compression
+ 15 dBm
+15 dBm
Description:
Amplifier gain is measured at the maximum and minimum points of its frequency response (see
Figures 1 and 2). The difference between highest measured gain and lowest measured gain should be
less than 3 dB (gain flatness). Half of the sum of highest gain and lowest gain is measured mean gain
and should be within 1.5 dB of specified gain. Compression is checked by measuring gain at the
specified 1 dB compression point and comparing it to gain measured below compression.
Equipment:
Genera tor/Sweeper . .
Sweep Oscillator . . .
RMS Voltmeter . . .
Power Meter ....
BNC Cable Assembly (2)
BNC Tee.
50 ohm Termination .
Adapter ......
Adapter ..
Adapter ......
20 dB Attenuator . .
10 dB Attenuator . .
. . HP 8601A
HP 8620A/8621A
. . . HP3400A
. HP 432A/478A
. . HP 10503A
. . UG-274B/U
. . HP 11593A
. . UG-349A/U
. . UG-201A/U
. HP 1250-0080
. . HP 8491B-20
. . HP 8491B-10
Figure 3. Gain Flatness, Mean Gain, and Gain Compression Test Setup: 10 MHz to 1.3 GHz

Page 10
Model 8447D/E/F
PERFORMANCE TESTS
55. Gain Flatness, Mean Gain, and Gain Compression (Cont.)
Procedure:
1. To measure gain flatness and mean gain, connect the equipment as shown in Figure 3. Set the
sweep oscillator for a 1.3 GHz, leveled, CW signal; set the signal level for "10 dBm out of the 10 dB
attenuator (read on the power meter).
2. Disconnect the power meter from the sweep oscillator and 10 dB attenuator. Connect the sweep
oscillator, through the 10 dB and 20 dB attenuators, to amplifier INPUT; connect the power meter to
amplifier OUTPUT. Note the power meter reading. Use this reading to calculate amplifier gain.
EXAMPLE:
"7 dBm (read in step 2) minus "10 dBm (set in step 1) plus 20 dB (read from attenuator) - 23 dB (gain)
Gain at 1300 MHz:_ dB
NOTE
Use attenuation printed on 20 dB attenuator; this may vary slightly, depending
upon frequency.
3. Tune the sweep oscillator for a maximum indication on the power meter at 1150 ±100 MHz.
Disconnect the oscillator and the power meter from the amplifier. Connect the power meter, through
the 10 dB attenuator, to the oscillator. Set the oscillator signal level for —10 dBm out of the attenuator.
4. Disconnect the power meter from the sweep oscillator and 10 dB attenuator. Connect the oscil¬
lator, through the 10 dB and 20 dB attenuators, to amplifier INPUT; connect the power meter to
amplifier OUTPUT. Calculate and record amplifier gain (as performed in step 2).
Gain at 1150 MHz:_dB
5. Measure, calculate and record amplifier gain at the following frequencies; use the procedures
outline in steps 3 and 4.
Frequency Gain
800 ±200 MHz (tune for minimum): ___.dB
350 ±100 MHz (tune for maximum): _dB
6 . Disconnect the sweep oscillator and the power meter from the amplifier. Connect the equipment
as shown in Figure 4. Set the generator/sweeper for a 10 MHz, CW signal; set the signal level for
—40 dB (read on the voltmeter).
7. Disconnect the voltmeter from the generator/sweeper. Connect the generator/sweeper to amplifier
INPUT; connect the voltmeter, with the 50 ohm termination, to amplifier OUTPUT. Note the volt¬
meter reading. Use this reading to calculate amplifier gain.
EXAMPLE:
—18.5 dB (read in step 7) minus —40 dB (set in step 6) = 21.5 dB (gain)
Gain at 10 MHz:____ dB

Model S447D/E/F
Page 11
PERFORMANCE TESTS
55. Gain Flatness, Mean Gain, and Gain Compression (Cont.)
GENERATOR/
SWEEPER MID! ICI CD
™ o is
o o o o o ®
AMPLIFIER
UNDER TEST
RMS WIT METER
BNC CABLE ASSY
* I
(STEP 7) | ISTEP 61 |
-p
ADAPTER
SOQTERMINATION^ / BNC CABLE ASSY
BNC TEE
Figure 4. Flatness and Mean Gain Test Setup: 100 kHz to 10 MHz
8 . Measure, calculate and record amplifier gain at the following frequencies; use the procedures
outlined above.
Frequency Gain
250 ±100 kHz (tune for maximum): ————— dB
100 kHz: —-— dB
9. Select the highest and lowest gains from steps 2, 4, 5, 7, and 8. Subtract the lowest gain from the
highest gain; the result is gain flatness and should be less than 3 dB.
EXAMPLE:
23 dB (highest gain) minus 21.5 dB (lowest gain) = 1.5 dB (gain flatness)
Gain Flatness: ——-.———______ 3 dB
10. Add the highest and lowest gains together and divide by 2; the result is measured mean gain.
EXAMPLE:
ughest gam) plus
vest gain) - 22.25 dB (mean gain)
Mean. Gain, 8447D:
Min. Actual Max.
26 dB...
8447E:
20.5 dB.
23.5 dB
8447F PRE AMP:
26 dB,
8447F POWER AMP: 20.5 dB _
NOTE
Gain rolls off rapidly above 1300 MHz and below 0.1 MHz. If lowest gain was
measured at either of these points, use a frequency counter to monitor the signal
and repeat steps 1 through 10.
23.5 dB

Page 12
Model 8447D/E/F
PERFORMANCE TESTS
55. Gain Flatness, Mean Gain, and Gain Compression (Cont.)
11. T o check compression, connect the power meter mount, through the 10 dB attenuator, to am¬
plifier OUTPUT (as shown in Figure 3). Connect the sweep oscillator, through the 20 dB attenuator,
to amplifier INPUT. Set the sweep oscillator for a leveled, 650 MHz, CW signal and set the signal
level (read on the power meter) as follows:
8447E: + 5 dBm (+15 dBm ampl. output)
8447F POWER AMP: + 5 dBm (+15 dBm ampl. output)
12. Without changing any of the sweep oscillator’s settings, move the 10 dB attenuator from am¬
plifier OUTPUT to amplifier INPUT; the power meter should now be connected directly to amplifier
OUTPUT and the sweep oscillator should be connected through the 20 dB attenuator and the 10 dB
attenuator to amplifier INPUT.
13. The power meter should read as follows:
8447E
less than +6 dBm:
+6 dBm
8447F POWER AMP less than +6 dBm:
+6 dBm
14. R epeat steps 11 through 13 at various frequencies between 0.1 and 1300 MHz.
56. VSWR
Specification (1 to 1300 MHz):
8447D
PRE AMP
844 7E
POWER AMP
84^ 17F
PRE AMP
POWER AMP
< 2.0 INPUT
<2.2 OUTPUT
<2.2
<2.0 INPUT
< 2.2 OUTPUT
< 2.2
Description:
A network analyzer is swept, in steps, from 1 to 1300 MHz. At each step the analyzer’s display is
referenced to 0 dB return loss by shorting its output; the short is then removed and the amplifier’s
return loss is measured at INPUT and OUTPUT.
Equipment:
Sweep Oscillator . ..».*.. HP 8620A/8621A
Generator/Sweeper.... HP 86 01A
Network Analyzer (0.1 to 110 MHz).... HP 8407A
Network Analyzer (0.11 to 1.3 GHz).-.. • HP 8410A

Model 8447D/E/F
Page 13
PERFORMANCE TESTS
56. VSWR (Cont.)
Equipment (Cont.):
Phase-Magnitude Display . . -
Harmonic Frequency Converter
S-Parameter Test Set ....
Universal Extension ....
Transmission Kit .....
Accessory Kit .......
Cable Assembly (3) . . . . .
Cable Assembly ......
HP 8412A
HP 8411A
HP 8745A
HP 11604A
HP 11651A
HP 11570A
HP 10503A
HP 11500A
Procedure:
1 . Connect the equipment as shown in Figure 5. Set the generator/sweeper for a —10 dBm signal,
sweeping from 1 to 110 MHz.
2. Connect the short to the directional bridge and calibrate tjie network analyzer for a 0 dB return
loss reference on the display (use the center horizontal graticule line).
3. Remove the short from the directional coupler, attach the coupler to amplifier INPUT (terminate
OUTPUT with 50 ohms).
4. Decrease the display reference level to —10 dB (the center horizontal graticule line now repre¬
sents a return loss of 10 dB). The measured return loss should be as shown below:
INPUT VSWR, 1 to 110 MHz:
8447F PREAMP, >9.6 dB: 9.6 dB___
8447D, >9.6 dB: 9.6 dB
8447E, >8.8 dB: 8.8 dB
8447F POWER AMP, >8.8 dB: 8.8 dB.

Page 14
Model 8447D/E/F
PERFORMANCE TESTS
56. VSWR (Cont.)
5. M easure return loss at amplifier OUTPUT (terminate INPUT with 50 ohms). The measured
return loss should be greater than 8.8 dB.
OUTPUT VSWR, 1 to 110 MHz:- 8.8 dB ..
NETWORK ANALYZER
IK
Figure 6 . VSWR Test Setup: 0.11 to 1.3 GHz
6 . Connect the equipment as shown in Figure 6. Set the sweep oscillator for a leveled CW signal,
sweeping from 110 to 220 MHz. Connect the power meter to s-parameter test set INPUT PORT A
and set the generator/sweeper’s output level for —15 dBm as read on the power meter.
7. Disconnect the power meter from the test set and connect a short to INPUT PORT A (measuring
Six at INPUT PORT A). Calibrate the analyzer for a 0 dB return loss reference on the display (use
the center horizontal graticule line). Note TEST CHANNEL GAIN at the reference:
Reference TEST CHAN. GAIN, 110 to 220 MHz: dR
8 . Disconnect the short from INPUT PORT A. Terminate amplifier OUTPUT with 50 ohms.
Connect INPUT PORT A to amplifier INPUT.

Model 8447D/E/F
Page 15
PERFORMANCE TESTS
56. VSWR (Cont.)
9. Set TEST CHANNEL GAIN 10 dB above the reference in step 7. The center horizontal graticule
line now represents a return loss of 10 dB. The measured return loss should be as shown below:
INPUT VSWR, 110 to 220 MHz:
8447D, >9.6 dB: 9.6 dB___ 8447F PRE AMP, >9.6 dB: 9.6 dB_....--—
8447E, >8.8 dB: 8.8 dB„_ 8447F POWER AMP, >8.8 dB: 8.8 dB_..._
10. Repeat steps 8 and 9, measuring return loss at amplifier OUTPUT (terminate amplifier INPUT
with 50 ohms). The measured return loss should be greater than 8.8 dB:
OUTPUT VSWR, 110 to 220 MHz: 8.8 dB ______
11 . S et the sweep oscillator to sweep each of the ranges shown below, repeating steps 7 through 10
for each range.
Sweep Range
Reference:
TEST CHAN.
GAIN
8447D INPUT,
8447F PRE
AMP INPUT
8447E INPUT,
8447F POWER
AMP INPUT
OUTPUT
220 to 440 MHz
dB
9.6 dB
8.8 dB
8.8 dB
440 to 880 MHz
dB
9.6 dB
8.8 dB
8.8 dB
880 to 1300 MHz
dB
9.6 dB
8.8 dB 8.8 dB
-----
57. Distortion and Reverse Isolation
Specifications:
8447D
PRE AMP
8447E
POWER AMP
8447F
PRE AMP
POWER AMP
Harmonic
Distortion
—30 dB for
+10 dBm output
-30 dB for
+10 dBm output
Reverse
Isolation
>40 dB
>40 dB
> 40 dB
>40 dB
Description:
A fixed, CW signal at 400 MHz is filtered and applied to amplifier INPUT. Amplifier OUTPUT is
connected to a spectrum analyzer, and the analyzer is used to check the second and third harmonic
levels. Reverse isolation is checked by applying a known signal level to amplifier OUTPUT and mea¬
suring it at amplifier INPUT.

Page 16
Model 8447D/E/F
PERFORMANCE TESTS
57. Distortion and Reverse Isolation (Cont.)
HP 141T/8552A/8555A
HP 8620A/8621A
Cir-Q-Tel FLT/2 Series
.... HP 10503A
.... UG-201A/U
. . . HP 8491B-10
.... UG-349A/U
.... HP 11500A
Equipment:
Spectrum Analyzer . .
Sweep Oscillator . . .
400 MHz Low Pass Filter
Cable Assembly . . .
Adapter ......
10 dB Attenuator . .
Adapter.
Cable Assembly . . .
SPECTRUM ANALYZER
Figure 7. Distortion and Reverse Isolation Test Setup
Procedure:
1. To check distortion, connect the equipment as shown in Figure 7. Set the sweep oscillator for a
fixed, 400 MHz CW signal.
2. Set the spectrum analyzer’s input attenuator as shown below; adjust the controls to display
400 through 1200 MHz.
NOTE
The signal into the analyzer's input mixer must be low enough to eliminate
harmonic distortion in the analyzer.
3. S et the sweep oscillator’s output level for the following signal levels out of the amplifier (read
on the analyzer).
Signal Level
Analyzer Input Atten.
8447E: +10 dBm 50 dB
8447F POWER AMP: +10 dBm 50 dB
4. N o te the level of the second harmonic (at 800 MHz) and the third harmonic (at 1200 MHz).
The harmonic signal levels should be >30 dB below the fundamental:
Harmonic Distortion, 30 dB down: 30 dB__