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Appendix E Model 8444A Option 0 5 9
50aMHz OUTPUT THlRO LO INPUT
When using the 8 4 4 4 A with an 8558B, 8565A, o r 8568A Spectrum Analyzer the
8444A 5 0 0 MHz OUTPUT and its THRID LO INPUT must b e interconnected
with a short cable.
Figure E-I I . Location of 500 MHz LO OUTPUT BNC Connector
Added on Rear panel o f the 8444A. Option 059
Model 8444A Option 059 Appendix E
J9 BNC REAR PANEL
W19 500 MHz OUTPUT CONNECTOR
T1
C1 A7
AT2
C2
A6
02 FL1
A4
a1
A9
A1
A2
-10V/+20V LEADS 500 MHz OSCILLATOR AY A9J1 OSCl LLATOR OUTPUT AT1
MOUNTING LOCATION
Figure E-10. 500 MHz LO Mounting Location and Output Port for the S444A Option 059
E-13
4\i,i,,,l!,\;,, 1 ~ ~ l ,I
X l o ~ l 344-4 O p t io11 \ ) i c )
/.'i,ql,rc* r ~ ~ ~ r ,'$/io\i~iti~y~ ~ / ~ / ( ~ ( ,,,I~/t/ / /i) ci~/ ~ 'ir t
Ii-9. l ) / O .Sc,c,ot~c/ ' o t i ~ ~ vC'ir(,l/it.~
C R / j e
A
(1t1(1 LC' /)c.tc,ctor ,tOr O / ) t i o t ~
0.59
Model 8444A Option 059 Appendix E
Figure E-7. A9 500 M H z Oscillator Assembly, Schematic
8558BIlX2 1
Si't CTRlJM
ANALYLER
8444A OPT I(>N 059
TRACKING GENERATOII
i ' l l l l l l LI1
I N I'IJ r
n ',[Ill f,tIl,
[III~PUT
8444A OPTION 059
8565A
SPECTRUM ANALYZER
TRACKING GENERATOR
T H R O LO
INPUT
n -G 500 M l j r
OIJTPUT
-p
INPUT
8444A OPTION 059
n
TRACKING GENERATOR
THIRD LO 500 MHz
8568A
INPUT OUTPUT
SPECTRUM A N A L Y Z E R
--
KEY IN ,., ~ ~ ( K S T )
Model 8444A Option 059 Appendix E
Table E-3. Replaceable Parts Additions for Option 059
-
Reference HP Part M fr
OW Description Mfr Part Number
Designation Number Code
A9 0844460024 1 500 MHz OSCILLATOR ASSEMBLY 28480 08444-60024
P9C 1 0160-2357 2 C;FX D 1OOOPF +80 -20% 500WVDC C6 R 28480 0160-2357
A9C2 0160-2357 C;FX D 1OOOPF +80 -20% 500WVDC CE R 28480 0160-2357
A9J1 12 5 0 0828 1 CONNECTOR: 5 0 OHM 28480 1250-0828
A9 L 1 0855400015 1 COUPLING: L O OUTPUT 28480 08554-00015
A9R1 06987200 1 R;FXD 31.6 OHM 2% .05W 24546 C3-1/8-TOO-31R 6 G
A9A1 0844460020 1 OSCILLATOR ASSEMBLY: 500 MHz 28480 08444-60020
A9AlCl 0160-2247 1 C : F X D 3.9PF f.25PF 500WVDC CER 28 48 0 0160-2247
A9AlC2 0121-0414 1 C:VAR T R M R 1.9 - 8.5PF; AIR 74970 189-2535 MODIFIED
A9A1 L 1 0855400007 1 I N DUCTOR: 500 MHz OSC. 28480 0855400007
A9A1Q l 18540323 2 TRANSISTOR: NPN 28480 1854-0323
A9AlQ2 18540323 TRANSISTOR: NPN 28480 1854-0323
A9AlR1 06983447 1 R : F X D 422 O H M 1% 1/8W 16299 C4-118-TO-422R-F
A9A1 R2 0757-0280 2 R : F X D l K O H M 1% 1/8W 24546 C4-1/8-TO-1001-F
A 9 A 1 R3 0757-0280 R : F X D 1K O H M 1% 1/8W 24546 C4-1/8-TO-1001~
F
A9AZ 0844460031 1 POWER SUPPLY F I L T E R ASSEMBLY 28480 084446003 1
A9A2C1 0160-2055 2 C : F X D .O1 U F + 8 0 -20% 1OOWVDC CER 28480 0160-2055
A9A2C2 0160-2055 C:FXD .01UF +80 -20% 1OOWVDCCER 28480 0160-2055
A9A2C3 0180-0049 2 C : F X D 2OUF +75 - l O % 5 0 W V D C A L 56289 300206G050CC2
A9A2C4 0180-0049 C: F X D ZOUF +75 -10% 50WVDC A L 56289 300206G050CC2
A9A2CR1 1901-0040 2 DIODE: SWITCHING 2NS 30V 50MA 28480 1901-0040
A9A2CR2 1901-0040 DIODE: SWITCHING 2NS 30V 50MA 28480 1901-0040
A9A2Q1 18540404 2 TRANSISTOR: NPN 28480 1854-0404
A9A2Q2 1854-0404 TRANSISTOR: NPN 28480 1854-0404
A9A2 R 1 2100-1 775 1 R : V A R 5 K OHM 5% WW 28480 2100-1775
A9A2R2 06983155 2 R : F X D 4.64K O H M 1% 1/8W 16299 C41/8TO-4641-F
A9A2R3 06983155 R : F X D 4.64K OHM 1% 1/8% 16299 C4-1/8-TO-4641-F
A9A2R4 0698-0083 1 R: F X D 1.96K OHM 1% 1/8W 16299 C4-1/8-TO-1961-F
A9A2R5 06980082 1 R : F X D 4 6 4 OHM 1% 1/8W 16299 C4-1/8-TO-4640-F
W19 08444-60025 1 CABLE: COAX; 5 0 0 MHz OUTPUT 28480 0844460025
Table E l . Replaceable Parts Changes for Option 059
Reference HP Part Mfr
Designation Number ow Description
Code
Mfr Part Number
A3 5086-7330 1 AMPLIFIER A N D A L C DETECTOR 28480 1 5086-7330
08444-60037 1 F I L T E R : BANDPASS (2-3.55 GHz)
08444-00033 1 PANEL: F R O N T ( O L I V E B L A C K /
MINT GRAY
08444-60039 1 C A B L E ASSY: RF INTERCONNECT
Aplwndix E Model 8444A Option 059
Tublc E-2. S J ' S ~ ~ P P I
Perjor~)z(1~1ceI ~ u r u ( ~ ~ ~ r ~ s t i c s
C
PERFORMANCE C H A R A c T E R l s T l c s 6
T h e f o l l o w i n g characteristics o u t l i n e t h e t y p i c a l performance of t h e tracking g e n e r a t o r / s p e c -
t r u m arialyzer s y s t e r ~ rusing t h e HI' Model 8 4 4 4 A O p t i o n 0 5 9 Tracking G e n e r a t o r w i t h various
H P s p e c t r u m analyzers. T h e s e are n o t specifications. T h e y are i n t e n d e d o n l y a s a d d i t i o n a l in-
f o r m a t i o n regarding i n s t r u m e n t p e r f o r m a n c e .
Description 8444A-059 8444A-059 8444A-059
with 8558B with 8565A with 8568A
SWEPT FREQLIENCY
RESPONSE
MEASUREMENTS
D y n a ~ r i i cRange
Average ~ o i s e l
Calibration Range
Spectruin A n a l y ~ e r :
1.0~
I:rrcllic.ncy Range 5 0 0 kHz t o 1 5 0 0 MHz
Scan Width
1:ull S p a n N o t Available 1 5 0 0 MHz
I'er Division 5 k H z t o I 0 0 MHz 1 kHz t o 1 0 0 MHz
Residual F:M' 1 kHz 3 0 0 Hz
Frequency Response:
( s y s t e m flatness, 0 . 5
1 5 0 0 MHz) f 1.75 d B (3.5 dB) t 2 . 0 d B (4.0 dB)
SWEEPICW
GENERATOR
F r e q u e n c ~ yRange 5 0 0 k H z t o 1 5 0 0 MHz 1 0 MHz t o 1 5 0 0 MHz 5 0 0 kHz t o 1 5 0 0 MHz
Frequency ~ c c u r a c y ~ S a ~ n e 8558B
as Sarne as 8 5 6 5 A Same as 8568A
O u t p u t Flatness i 0 . 7 5 dB i0.75 d B k0.75 dB
Spectral Purity
Residual F M ~ 1 kHz
H a r m o n i c Distortion 2 5 dBc
S p u r i o u s Signals 3 5 dBc
Long Tern1 Stability
Drift 3 0 kHz110 m i n . 1 3 kHz/?O min. 1 0 kI3z:lO n ~ i n . ~
S w e e p Width 5 0 k H z t o 1 0 0 0 MHz 1 0 k H z t o 1 5 0 0 MHz 1 0 0 Hz t o 1 5 0 0 MHz
S w e e p R a t e (Per Div.) 5 m s t o 1 0 sec5 2 111s t o 1 0 sec6 2 ms t o 1 5 0 sec6
' With 1 0 k H z r e s o l u t i o n b a n d w i d t h selected.
Residual F M o f t r a c k i n g g e n e r a t o r is typically < 3 0 0 Hz.
' F r e q u e n c y a c c u r a c y , w h e n using t h e 8 5 5 8 8 o r 8 5 6 5 A s p e c t r u m analyzer, may b e i m p r o v e d by use of a n external fre-
q u e n c y c o u n t e r c o n n e c t e d t o rear-panel A U X R F O U T P U T . 8 5 6 8 A contains a n internal c o u n t e r , s o s h o u l d be used alon
f o r best accuracy.
1'1us a r l a l y ~ e r r i f t d u r i n g o n e s w e e p .
d
\ \ l l h o u g h faster s w e e p rates are available, f o r best t r a c k i n g , t h e 8 5 5 8 B should n o t b e s w e p t f a s t e r t h a n 5 ms.
I)(, n o t usc coupleti s w e c p t i m e s in Full S p a n . F o r best o p e r a t i o n w i t h 8 5 6 8 A , use
t r e q u c n c y f o r s p a n s <1 MHz.
@
3 ( K S T ) t o lock 2 n d LO
Modcl 8444A Option 059
SPECIFICATIONS
The I'ollowing specifications are for the H P 8444A Tracking Generator ONLY and should not be coill'ust.~i
with systelii sl~ccil'ic;~tions listcd in Tablc 1 - 1 . T y l ~ i c a lsystcln pcrfor~naiict.cliaracteristics arc
locatc,ci in Tal)lc 1:-2.
SWEPT FREQUENCY RESPONSE MEASUREMENTS
Absolute Amplitude Calibration Range:
Frequency Range: 500 kHz to 1500 MHz
Stability:
Residual FM: Depends on analyzer being used. Refer to Table E-2.
Amplitude Accuracy:
Frequency Response (flatness)' :
0.5 to 1300 M H z , + 0.5 dB
0.5 to 1500 M H z , +0.75 d B
Tracking Generator Calibration: 0 dBrn +0.5 d B at 30 MHz
SWEEPICW GENERATOR
Frequency R,ange: 500 kHz to 1500 MHz
Frequency Accuracy: Same as analyzer being used.'
Output Flatness: 0.5 to 1300 MHz, + 0 . 5 dB; 0.5 t o 1500 MHz, +0.75 dB
Drive Level to Test Device: 0 to - 10 dBm continuousy variable.
Spectral Purity:
Residual FM: Depends on analyzer being used. Refer to Table E-2.
Spurious Signals: r 35 d B below output level.
'This is output flatness of tracking generator only. System frequency response is determined by cornbin-
ing this figure with frequency response figure for spectrum analyzer used. Refer to Table E-2 for typical
values using various analyzers.
Frequency accuracy, when using the 85588 or 8565A spectrum analyzers, may be improved by use of an
external frequency counter connected to rear-panel AUX R F OUTPUT connector. 8568A Spectrum
Analyzer contains an internal frequency counter, so should be used alone for best accuracy.
Appcndix I
' Model 8444A Option 059
5. Use FREQUENCY F l N E TUNE control to center signal on C R T and adjust LlNEAR SENSlTlVlTY
control to place peak of signal at LOG REF LEVEL (top graticule line).
6. Set spectrum analyzer SCAN W l D T H to ZERO.
7. Use FREQUENCY FlNE TUNE to place signal between 2 and 5 divisions down from top of display
8. Peak-to-peak deviation of signal trace should be (0.6 divisions.
9. This corresponds to 1 1 2 0 H z residual FM. This is calculated by multiplying the peak-to-peak
deviation times 200 Hz/division modulation sensitivity. Modulation sensitivity can be measured by
performing steps 13 and 14 of Paragraph 5-10 in Section V.
E-22. REPLACEABLE PARTS
E-23. Replaceable parts for the standard 8444A Tracking Generator are listed in Section VI. Table E-3 lists
the additional parts contained in the 8444A Option 059. Table E-4 lists those parts used in the 8444A Op-
tion 059 which replace parts used in the standard 8444A.
E-24. SERVICE
E-25. Description of Option 059. When the Option 059 modification is installed in the 8444A Tracking
Generator, a 500 MHz fixed-tuned local oscillator (A9 assembly) is added. This oscillator provides the 500
MHz Third L.O. signal not available from various spectrum analyzers. In addition, the Amplifier and
ALC Detector (A3 assembly) and the Band - Pass Filter (FL1) are replaced t o extend the upper frequency
limit to 1500 MHz.
E-26. Figures E-7 through E-9 are schematic diagrams which illustrate the additions and changes to the
8444A when Option 059 is installed. Figures E-10 and E-11 are photographs of the 8444A Option 059
showing the addition of the 500 M H z oscillator (A9 assembly) and rear-panel 500 MHz Output connector.
Model 8 4 4 4 A Option 0 5 9 Appcndix 1
:
FREQUENCY 8444A OPT ION 059
COMB GENERATOR SPECTRUM A N A L Y Z E R T R A C K I N G GENERATOR
OUTVlJT
OUTPUT
E'i(:ltre 1:'-3. 500 AlIIz L.O. Residllal FM Chcck I:'yui/)nzc]tlt
Setlc/~
EOUI Phl ENT:
Spectrum Analyzer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . HI' 8553B/8553B/ 14 IT
C o m b G e n e r a t o r . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . FIP 8 4 0 6 A
Mixer. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Vari-L 4 0 0 A
PROCEDURE:
1. Connect equipment a s shown in Figure E-3.
2. Set instrument controls a s follows:
8 4 0 6 A C o m b Generator
OUTI'UT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . MAX
COMBFREQ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100MHz
8553B Spectrum Analyzer RF Section:
FREQUENCY. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100 MH7.
BANDWIDTH . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 0 k H z
SCAN WIDTFI/L)IV. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2 MHz
8552B S p e c t r ~ l mAnalyzer IF Section:
SCANTIMEIDIV . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 0 m s
VIDEOFILTER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . OFF
L O G I L I N E A K . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . LINEAR
8 4 4 3 A Option 0 5 9 Tracking Generator:
TRACK A D J . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Fully C o u ~ i t e r c l o c k w i s ~
3 T u n c the 1 0 0 MHz signal t o the center o f the C R T display
4. Change spectrum analyzer control settings as follows:
SCANWIDTHIDIV . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ? k H z
BANDWIDTH . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 k H z
TUNING STABILIZER. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ON
SCANTIMEIDIV . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .lsec
VIDEO FILTER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 kH7
Al>pcndix I! Model 8444A Option 059
E-19. The procedures in Section V indicate the use of either an H P 8554B or H P 8555A Spectrum
Analyzer. An H P 8558B, H P 8565A, o r H P 8568A Spectrum Analyzer may be used but some of the con-
trol names will be different than stated in the procedures.
E-20.500 MHz Local Oscillator Adjustment
R E F E R E N C E : Figure E-7
DESCRIPTION:
The internal 500 M H z oscillator is adjusted for proper output level a n d frequency using a power meter and
frequency counter t o monitor the rear-panel output.
POWER
METER
F R E Q U E N C Y COUNTER
THERMISTER 8444A OPTION 059
-==-=-v
TRACKING G E N E R A T O R
INPUT
--I- 500 M H z
OUTPUT
Figllrcl E-2. 500 M H z Local 0sc.illator Adjustment Setup
Frequency Counter. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . HP 5340A
Power Meter/Thermistor Moiin t . . . . . . . . . . . . . . . . . . . . . . . . . HP 432A/4 78A
PROCEDURE:
1. Connect equipment as shown in Figure E-2 with power ineter connected t o rear-panel 500 MHL OUT-
PUT.
2. Adjust A9 L O P W R adjustment for a n output level of + 4 dBm *0.5 dB.
3 . Disconnect power meter and connect frequency counter t o rear-panel 500 M H z O U T P U T .
4. Adjust A 9 F R E Q A D J adjustment for an output frequency of 500 * 0.2 MHz.
5. Repeat steps 1 through 4 until both output power a n d frequency are within specifications
E-21.500 MHz Local Oscillator Residual FM Check
REFERENCE: Figure E-7
DESCRIPTION:
The residual FM o f the oscillator is checked by mixing the 500 M H z output with a 400 M H z comb tooth
and displaying the resulting 100 MHz difference frequency o n a spectrum analyzer.
E 4
Modcl 8444A Option 059 Appendix E
2. Set spectrum analyzer controls 3s follows:
LOGILINEAR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
FREQSPANIDIV . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . OkHz
RESOLUTlON BW . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 OkHz
S T A R T I C E N T E R . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . CENTER
SWEEPTIMEIDIV . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 0 m s
FREQUENCY MHz. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 MHz
3. Adjust the spectrum analyzer T U N I N G control for a frequency counter indication of 30 M H z .
4. Set tracking generator output LEVEL control to the 0 dBm position.
5. Adjust tracking generator TRACK A D J for maximum displayed signal level o n spectrum analyzer
display.
6 . Connect power meter/thermistor mount to tracking generator R F O U T P U T . FIRST LO I N P U T may
be removed to zero power meter, then reconnected.
7. Tracking generator output level, as indicated o n power meter, must be 0 dBm +0.5 dB.
8. Set tracking generator output LEVEL control fully counterclockwise.
9. Tracking generator output level, as indicated o n power meter, must be between - 10 and - 12 dBm.
10. Adjust tracking generator output LEVEL control for an output of - 1 dBm as indicated o n power
meter.
0 11. Adjust spectrum analyzer T U N l N G control for a frequency counter indication of 500 + 1 kHz.
12. Slowly adjust spectrum analyzer T U N I N G control for frequency from 500 kHz to 1300 M H z while
monitoring output level on power meter.
13. Record highest and lowest output level indications.
H i g h e s t Lowest -
14. The difference between the highest a n d lowest output levels must be I1.0 dB ( + 0 . 5 dB).
IS. Slowly adjust spectrum analyzer T U N l N G control for frequency from 1300 to 1500 M H z while
monitoring output level o n power meter.
16. Record highest and lowest output level indications.
H i g h e s t Lowest-
17. Using the recorded values from steps 13 a n d 16, record the highest and lowest output level indications
for frequency from 500 kHz to 1500 MHz.
Highest -Lowest-
18. The difference between the highest a n d lowest output levels must be I1.5 d B (+0.75 dB).
E-17. ADJUSTMENTS
8-18. In addition t o the adjustment procedures outlined in Section V , the following adjustment, Paragraph
f E-20, must be performed. This procedure is used to adjust the internal 500 M H z oscillator (A9 assembly)
which is added by the Option 059 modification. Also, an FM check of the oscillator is included, Paragraph
E-21, to aid in locating the source of excessive residual FM.
Appendix I Model 8444A Option 059
E-14. T h e procedures in Section IV indicate the use of either an H P 8554B or H P 8555A Spectrum
Analyzer. An H P 8558B, H P 8565A, or H P 8568A Spectrum Analyzer may be used for complete testing up
to I500 hl H z but some of ' t h e control names will be different than stated in the procedures.
E-15. T h e following test indicates the use of an H P 8558B Spectrum Analyzer. An H P 8565A or H P 8568A
Spectrum Analyzer may be used but some of the control names will be different than stated in the
procedure.
E-16. Output Level and Flatness Test
SPECIFICATION:
Amplitude Accuracy:
Frequency Response(flatness): 0.5 to 1300 M H z ; *0.5dB(1 dB)
0.5 to 1500 M H z ; *0.75 dB(1.5 dB)
Tracking Generator Calibration: 0 dBm *0.5 d B at 30 M H z
Drive Level t o Test Device: 0 to - 10 dBm continuously variable
DESCRIPTION
T h e Tracking Generator output is checked for proper calibration level (0 d B m k 0 . 5 dB) at 30 M H z and
proper range (0 to - 10 dBm). Next, output flatness is checked from 0.5 to 1300 M H z and 0.5 to 1500
MHz.
855881182T
SPECTRUM POWER
ANALYZER FREQUENCYCOUNTER METER
1 - . o ~ P ~
INPUT I S T LO
8444A OPTION 059
TRACKING GENERATOR
OUTPUT
THERMISTER
R F OUTPUT MOUNT
I i
INPUT
J
Figure E-I. Ozttput Level and Flatness Test Setup
EQLIIPMENT:
Spectru~nAnalyzer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . HP 8558B/ 182T
Frequency C o u n t e r . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . HP 5340A
Power Meter/Thermistor Mount . . . . . . . . . . . . . . . . . . . . . . . . . HP 43 2A/478A
PROCEDURE:
1. Connect equipment as shown in Figure E-1 with frequency counter connected to tracking generator
rear-panel A U X R F O U T P U T and tracking generator front-panel R F O U T P U T connected to spec-
trum analyzer R F I N P U T .
Model 8444A Option 059 Appendix E
APPENDIX E
MODEL 8444A TRACKING GENERATOR, OPTION 059
E-1. INTRODUCTION
E-2. This appendix describes the Model 8444A Option 059 Tracking Generator as compared to the standard
8444A Tracking Generator. The use of this tracking generator with various Hewlett-Packard spectrum
analyzers is also explained.
E-3. DESCRIPTION
E-4. The standard 8444A Tracking Generator is intended to provide either a 0.5 to 1250 MHz tracking
signal for the 8554B/8552/140 Spectrum Analyzer or a 10 to 1300 MHz tracking signal for the
8555A/8552/140 Spectrum Analyzer. To provide this tracking signal, a First L.O. signal o f approximately
2 to 4 GHz and a Third L.O. signal of 500 MHz are required. Both of these signals are available from the
8554B and 8555A Spectrum Analyzer RF Sections.
E-5. To use the 8444A Tracking Generator with the 8558B installed in a 180 series mainframe, 8565A, or
8568A Spectrum Analyzer, the Option 059 modification must be installed in the tracking generator. This
modification adds a n internal 500 MHz oscillator to provide the Third L.O. signal which the above men-
tioned analyzers do not provide. Also, this modification extends the upper frequency limit to 1500 MHz to
allow coverage of the full frequency range of these analyzers.
E-6. SPECIFICATIONS
E-7. Table E-1 lists the specifications for the 8444A Option 059 Tracking Generator only. Typical system
performance characteristics for the tracking generator when used with the 8558B, 8565A, or 8568A Spec-
trum Analyzer are located in Table E-2. Specifications for the 8444A Option 059 when used with either the
8554B or 8555A are the same as listed in Table 1-1 for the standard 8444A Tracking Generator up to a fre-
quency of 1300 MHz.
E-8. OPERATION
E-9. Figures E-4 through E-6 illustrate the proper equipment connections for operation of the 8444A Op-
tion 059 Tracking Generator with the 8558B, 8565A, or 8568A Spectrum Analyzer.
E-10. The 8444A Option 059 may also be used with the 8554B or 8555A Spectrum Analyzer. However, for
proper operation, the Third L.O. output from the spectrum analyzer should be used rather than the output
of the tracking generator's internal oscillator. Equipment connections for operation with the 8554B or
8555A is illustrated in Section 111.
E-11. PERFORMANCE TESTS
E-12. T o test the 8444A Option 059 Tracking Generator for compliance with specifications, perform the
Harmonic and Distortion Test outlined in Section IV using the specification from Table E-1 . In addition to
this test in Section IV, perform the following test, Paragraph E-16, Output Level and Flatness Test.
44 E-13. Other performance tests outlined in Section IV (except Output Level and Flatness) may be used to
test system performance for the purpose of comparison with typical system performance characteristics
outlined in Table E-2. Such testing should provide a high level of confidence for measurement results ob-
tained using the tracking generator/spectrum analyzer system.