The RF downlink S-band path in the RF path console was tested under quality assurance inspection. The UHF RF paths were also tested. The acceptance test plans, procedures, and results of the acceptance tests are included

Doland, G. D.

English

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rf
COMMUNICATIONS AND TRACKING SUBSYSTEM
APPROACH AND LANDING TEST PHASE
TASK 501 R.F PATH CONSOLE
ACCEPTANCE TEST REPORT
/if '1 Coif
W
Job Order 17-069
Vii-SA-C K-1477h4! COMMUNICATIONS AND	 N76 - 25453
T^ACKIVJ SWSYSTta	 A,i,' L^NDIN; TFST
PHASk TASK 501 RF PATH Cj`4SC Le AC.CFPTANCL
TEST -=.::Par);i (L- ,KHEt7 ? Lt;T t .ICS CC.I	 2`, P	 JiaCLAS
HC $4.00
	 CSCL 173	 42827
Prepared By
Lockheed Electronics Company, Inc.
Aerospace Systems Division
Houston, Texas
Contract NAS 9-12200
For
	SPACECRXFT SYSTEMS TEST OFFICE	
^^^^**
TRACKING AND COMMUNICATIONS DEVELOPMENT DIVISxc7l-
E 1 ( '	 i
t ^ ^
JSC-11194
COMMUNICATIONS AND TRACKING SUBSYSTEM
APPROACH AND LANDING TEST PHASE
TASK 501 RF PATH CONSOLE
ACCEPTANCE TEST REPORT
Job Order 17-069
N , /3 d'42,..t^ t
G. D. Doland, Engineer
Spacecraft Systems Test Section
Lockheed Electronics Company, Inc.
APPROVED BY
/	
LEC	 NASA
^/z
L. Roelse, Supervisor	 W. C. Long, Office
Spacecraft Systems Test Section Spacecraft Systems Testolefice
S. Creamer, Manager
Tracking and Communicate ns
Systems Department
Prepared By
Lockheed Electronics Company, Inc.
For
Spacecraft Systems Test Office
Tracking and Communications Development Division
NATIONAL AERONAUTICS AND SPACE ADMINISTRATION
LYNDON B. JOHNSON SPACE CENTER
HOUSTON, TEXAS
May 1976
LEC-86'1
SHUTTLE
TECHNICAL	 REPORT	 INDEX/ABSTRACT(See instructions on reverse side.)
1,	 TITLE	 AND	 SUBTITLE	 OF	 DOCUMENT	 2.	 JEC NO.
Communications and Tracking Subsystem	 JSC-11194
Approach and Landing Test Phase
Task 501 RF Path Console
Acceptance Test Report
3.	 CONTRACTOR/ORGANIZATION NAME 4.	 CONTRACT	 OR	 GRANT	 NO.
Lockheed Electronics Company, inc. NAS 9-12200
5.	 CONTRACTOR/ORIGINA T OR	 DOCUMENT	 NO. 6.	 PUBLICATION	 DATE	 (THIS	 ISSUE)
LEC 8634 5/76
7.	 SECURITY	 CLAS51FICATION 8.	 CPR	 (OFFICE	 OF	 PRIMARY	 RESPONSIBILITY)
Unclassified A. Roelse/J. S. Creamer
9.	 LIMITATIONS
GOVERNMENT HAS UNLIMITED RIGHTS	 ® YES	 q NO
TO.	 A;;THOR(S)
George Doland
IF	 NO,	 STATE	 LIMITATIONS	 AND	 AUTHORITY
N/A
11.	 DOCUMENT	 CONTRACT	 REFERENCES 12.	 NARONARE	 CONFIGURATION
WORK	 BREAKDOWN	 STRUCTURE	 NO. SY'TEM
N/A
CONT?ACT	 EXHIBIT	 NO. SI,BSr--TEM
N/A N/A
^eL	 NO.	 AND	 REVISION MAJOR	 EQUI PMENT	 GROUP
N/A
N/ADRL	 LINE	 ITEM	 N0.
N/A
13,	 ABSTRACT
The RF downlink S-band path in the RF Path Console was tested under
Quality Assurance inspection. 	 The UHF RF paths were also tested.
This document cn:tains the acceptance test plans, procedures, and
results of the acceptance tests.
14.	 SUBJECT	 TERMS
Shuttle	 Orbiter/SCA
ALT
UHF RF
JSC Form 833 (Rev Sep 74)	 i i i	 NASA-JSC
ACKNOWLEDGMENT
This document was prepared in response to Action Document
75-17-069-42 submitted by the Spacecraft Systems Test Office of
the Tracking and Communications Development Division. William
C. Long, Office Head, is technical monitor for this task. George
D. Doland of the Spacecraft Systems Test Section of Lockheed
Electronics Company, Inc., prepared this document. R. Davis
engineered the design and construction of the RF Path Console.
R. Davis also conducted the acceptance tests.
iv
CONTENTS
Section Page
•	 1. SUMMARY	 .	 .	 .	 .	 .	 .	 .	 .	 .	 .	 .	 .	 .	 .	 . .	 .	 .	 .	 .	 .	 1-1
2. INTRODUCTION .	 .	 .	 .	 .	 .	 .	 .	 .	 .	 .	 .	 . .	 .	 .	 .	 .	 .	 2-1
2.1	 PURPOSE .	 .	 .	 .	 .	 .	 .	 .	 .	 .	 .	 .	 . .	 .	 .	 .	 .	 .	 2-1
2.2	 REFERENCED DOCUMENTS .	 .	 .	 .	 .	 . .	 .	 .	 .	 .	 .	 2-1
2.3	 TEST EQUIPMENT	 .	 .	 .	 .	 .	 .	 .	 .	 . .	 .	 .	 .	 .	 .	 2-1
3. TEST PERFORMED . 	 .	 .	 .	 .	 .	 .	 .	 .	 .	 .	 . .	 .	 .	 .	 .	 .	 3-1
3 .1	 TEST PLAN .	 .	 .	 .	 .	 .	 .	 .	 .	 .	 .	 . .	 .	 .	 .	 .	 .	 3-1
3.2	 TEST PROCEDURE .	 .	 .	 .	 .	 .	 .	 .	 . .	 .	 .	 .	 .	 .	 3-1
4. ANALYSIS OF THE RESULTS .	 .	 .	 .	 .	 .	 . .	 .	 .	 .	 .	 .	 4-1
5. CONCLUSIONS	 .	 .	 .	 .	 .	 .	 .	 .	 .	 .	 .	 .	 . .	 .	 .	 .	 .	 .	 5-1
APPENDIX — DATA SHEETS
v
r 
ABBREVIATIONS
ALT	 Approach an3 Landing Test
dB	 Decibel
FM	 Frequency :modulation
RF	 Radio frequency
SCA	 Shuttle Carrier Aircraft
UHF	 Ultra-high frequency
vi
f1. SUMMARY
The radio frequency (RF) downlink S-band path in the RF Path
Console was tested under Quality Assurance inspection. The Ultra-
High Frequency (UHF) RF paths were also tested. Each RF path
had losses in the acceptable range. The RF Path Console was
accepted for the Approach and Landing Tests (ALT).
1-1
i2. INTRODUCTION
The RF Path console consists of individual RF paths used for
specific tests. The S-band downlink path is required for the
ALT compatability and performance testing using the ALT Frequency
Modulation (FM) System. The UHF path is required for the
Orbiter/Shuttle Carrier Aircraft (SCA) Audio and RF System
testing with the ground station.
2.1 PURPOSE
These tests co.istituted acceptance tests for the RF Path Console
for the ALT portion of the Shuttle Task 501 test program. These
RF path tests do not need to be repeated even though the RF con-
sole is modified by the addition of other independent RF paths.
However, the test must be repeated if any change is made to the
RF paths tested and accepted.
2.2 REFERENCED DOCUMENT
The RF Path console design and testing was performed in accor-
dance with the following document:
communications and Tracking Subsystem
Approach and Landing Test Phase
cask 501 RF Path Console
?reliminary Design and Testing
Prepared by Lockheed Electronics Company, Inc.
)ocument number LEC-7584; JSC-10794, dated January 1976.
2.3 TEST EQUIPMENT
The specific test equipment used for the tests is contained in
the table on the next page.
2-1
2-2
TEST EQUIPMENT USED
RF POWER METER
HP 431B	 NSN 77779
CAL DATE 9/4/76	 I.D. C09808
RF SIGNAL SOURCE
HP 608C SIGNAL GENERATOR NSN 77416
CAL DATE	 Z.D. C08921
HP 8660B SIGNAL GENERATOR NSN 10286
HP 86603	 RF SECTION	 NSN 106767
COUNTER
HP 5245L	 COUNTER	 NSN 93298
CAL DATE 10/14/76
PLUG-IN 5254A
CAL DATE 10/14/76
PLUG-IN 5253B
CAL DATE
POWER AMP
HP 491L	 POWER AMP
NSN 74863
NSN 74864
I.D. 000056
NSN 69711
j3. TEST PERFORMED
The test was performed in accordance with the following test
plan and test procedure.
3.1 TEST PLAN
All RF Path Consoles are to be constructed under quality control
to ensure the correct configuration. Tests will be performed
to detein;,ne the RF path losses from each RF input port to each
RF output port. No other tests will be performed as this
completely checks the RF paths, but does not provide the path
calibration. The following test procedure is to be used for
console buy-off of the S-Band and UHF RF paths.
3.2 TEST PROCEDURE
The following test procedure is used to determine the perform-
ance for each RF path. Sample data sheets are shown in the
appendix.
1. Record on the data sheet the equipment name, model number,
serial or identification number, and calibration date for
the RF Power Meter, any signal source used, and RF attenuators
used which are external to equipment consoles.
2. Remove the cable from the input connector on the RF path
panel and connect the signal source to the RF Power Meter
using the cable normally connected to the RF path to be
tested.
3. Energize the signal source; measure and record the power.
After the reading, turn off the signal source.
4. Remove the cable from the RF Power Meter and connect to the
RF path. Connect the RF Power Meter to the output connector
for the RF path.
3-1
5. Energize the signal source, measure and record the RF power.
After the measurement, turn off the signal source.
6. Remove the RF Power Meter from the RF path output and coi.nect
to a monitor point, if provided. Ensure the RF output port
is terminated in the correct impedance (usually 50 ohms).
7. Energize the signal source, measure and record the RF power.
Turn cff the signal source after the measurement.
8. Restore the RF path configuration to the original configura-
tion existing prior to the test.
9. Repeat steps 1 through 8 for each RF path. The test is to
be repeated to obtain data for both directions.
3-2
iF
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4. ANALYSIS OF THE RESULTS
The loss in the S-band RF path for the direct signal was
approximately 0.4 dB. The losses in the UHF path were 0.1 dB
or less. Each path provided a monitor point. The nominal
attenuation for each monitor point is 20 dB. The measured
values were within a fraction of a decibel of the nominal
attenuation. There were no losses above the nominal tolerance
and expected values. The cables and connectors have been shown
to be satisfactory.
The path configuration and measured losses are shown in fig-
ures 1 and 2.
4-1
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5. CONCLUSIONS
The RF Path Console is acceptable and ready for ALT FM System
performance and compatibility tests.
5-1
APPENDIX
DATA SHEETS
r
A-1
CO Q C^,	 lC ^/0^7-^ A v
APPROACH AND LANDING TEST PHASE
SHUTTLE TASK 501
RF PATH DATA SHEET
Date ,-.5-/,/ /76
Quality ontro
RF PATH NAME S- t3f?.^i .7	 ^c^ c'.c.^^ ^,,.' z
.5e z 3^ ii Sn.L 3-14
1. RF POWER METER DATA
M ^
RF SIGNAL SOURCE DATA
i c7 Go 76 63	 0t -774 Z_	 AV
ACCESSORIES USED
Sheet 1 of 2 sheets
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APPROACH AND LANDING TEST PHASE
SHUTTLE TASK 501
RF PATH DATA SHEET
Date	 L
Quality ontr-UT
2. SIGNAL SOURCE CONNECTION
	 55
3. SIGNAL SOURCE POWER	 6 -D a.A	 &
4. RF PATH OUTPUT CONNECTION	 i O
S. RF PATH OUTPUT POWER • 7"
6. MONITOR TEST CONFIGURATION
7. MONITOR POINT OUTPUT POWER
8. RF PATH RECONFIGURED
	
m
Sheet 2 of 2 sheets
ti
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APPROACH AND LANDING TEST PHASE
SHUTTLE TASK 501
RF PATH DATA SHEET
Date
Quality ontrol
RF PATH NAME U .^ i`  --^oct `•+J L /,L^i^C
1. RF POWER METER DATA
P^3/ L3	 / D '^ G' C^ 9cfoei^
dl9 L y1/,'/76
RF SIGNAL SOURCE DATA
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ACCESSORIES USED
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Sheet 1 of 2 sheets
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APPROACH AND LANDING TEST PHASE
SHUTTLE TASK 501
RF PATH DATA SHEET
Date	 /i A, 6Quality Contro l
2. SIGNAL SOURCE CONNECTION 	 J 7
3. SIGNAL SOURCE POWER 3 G	 1 .-.
4. RF PATH OUTPUT CONNECTION	 :Y!
S. RF PATH OUTPUT POWER 't' 3 G	 'e3 f9
6. MONITOR TEST CONFIGURATION 	 %I
7. MONITOR POINT OUTPUT POWER "^ ^ ^' ^ ^•a ,',
8. RF PATH RECONFIGURED
Sheet 2 of 2 sheets
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APPROACH AND LANDING TEST PHASE
SHUTTLE TASK 501
RF PATH DATA SHEET
Date X/ -/ /7 6
Quality Control
RF PATH NAME GJrl r	 /, z.' k	 es - z -3&iis'-';L34
1. RF POWER METER DATA
G' ^^ , y /-,^ ^7d	 Lail
RF SIGNAL SOURCE DATA
i -D s C°o 3? -Di	 o?s"`%, 7 ^Yl.fz
ACCESSORIES USED
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Sheet 1 of 2 sheets
APPROACH AND LANDING TEST PHASE
SHUTTLE TASK 501
RF PATH DATA SHEET
Date Quality Contro l
2. SIGNAL SOURCE CONNECTION
	 4&
.a
3. SIGNAL SOURCE POWER 74" -3. 6 `7d-,/7
4. RF PATH OUTPUT CONNECTION
S. RF PATH OUTPUT POWER t= %3- G
6. MONITOR TEST CONFIGURATION	 j 0
7. MONITOR POINT OUTPUT POWER " / 7• ( -Dr.)Ir
8. RF PATH RECONFIGURED
Sheet 2 of 2 sheets
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APPROACH AND LANDING TEST PHASE
SHUTTLE TASK 501
RF PATH DATA SHEET
Date -s/
 1-7 C-.
Quality ontro
RF PATH NAME
1. RF POWER METER DATA
^-1/3 43
	
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	 ^
RF SIGNAL SOURCE DATA
7 iV G
ACCESSORIES USED
i r7 10' d o o c y L,	 6", ' Z- .	 o	 /7 ^•
Sheet 1 of 2 sheets
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APPROACH AND LANDING TEST PHASE
SHUTTLE TASK 501
RF PATH DATA SHEET
Date	 / Iy 
Quality ontrol
2. SIGNAL SOURCE CONNECTION S ^'
3. SIGNAL SOURCE POWER	 D8
4. RF PATH OUTPUT CONNECTION S4
S. RF PATH OUTPUT POWER	 2.7	 ,«
6. MONITOR TEST CONFIGURATION ^.Sr'r j 0	 A-
7. MONITOR POINT OUTPUT POWER	 I'S" y
S. RF PATH RECONFIGURED
Sheet 2 of 2 sheets
kr^
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CSC - / p 7941
APPROACH AND LANDING TEST PHASE
SHUTTLE TASK SO1
RF PATH DATA SHEET
•	 Date -5	 117(-
ua ityo`^ ntrol
RF PATH NAME
	
	
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,S E Z 3G ii S. 3
1. RF POWER METER DATA
WP A13 .1 r3	 C c. 9 f^'o
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RF SIGNAL SOURCE DATA
''F e G ^ y ;k-^	 a 9G . e^.j^,^ z	
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C^ESSORIES USED
Sheet 1 of 2 sheets
3APPROACH AND LANDING TEST PHASE
SHUTTLE TASK S01
RF PATH DATA SHEET
Date
Quality Contro l
2. SIGNAL SOURCE CONNECTION T 7
3. SIGNAL SOURCE POWER	 4 -3• 	 2 2 12
4. RF PATH OUTPUT CONNECTION	 Sq J&
S. RF PATH OUTPUT POWER	 ^ 	 ^^ -7 ^u
b. MONITOR TEST CONFIGURATION
7. MONITOR POINT OUTPUT POWER	 I> 3 1
8. RF PATH RECONFIGURED
Sheet 2 of 2 sheets


Communications and tracking subsystem approach and landing test phase task 501 RF path console acceptance test report

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