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Produced by the NASA Center for Aerospace Information (CASI) 





IVfANSA^ 

National Aeronautics and 
Space Administration 


TJ 


I.V i'^on B. Johnson Space Center 

■i.uston, Texas 77058 





JSC-17917 


i 


EXTRAVEHICULAR ACTIVITY/AIR TRAFFIC CONTROL (EVA/ATC) TEST SYSTEM 

ACCEPTANCE TEST REPORT 


Job Order 14-409^^ 






o 


INASA-CiJ-loVbOU) EXSiaVSillLUlAK 
aCTIVlTY/AiR TRAEIIC LCRRILL (EVA/AIC) lliS'X 
iXEi'CRT (LocKui-aa Euij[xiH.ei. iny and Maimqt^uient) 
3 b p nC AU 3 /Mt iidi CSCI 17 B 


N8/'>/;3Jd1 


Uacxaa 

G3/a^ 2Uu0o 


Prepared By 

' Lockheed Engineering and Management Services Company, 

Houston, Texas 







Contract NAS 9-15800 
For 

SPACECRAFT SYSTEMS TEST SECTION 
TRACKING AND COMMUNICATIONS DEVELOPMENT DIVISION 
^ February 1982 

LEMSCO-17557 

'Ssc-n-f/f 



JSC-17917 


EXTRAVEHICULAR ACTIVITY/AIR TRAFFIC CONTROL (EVA/ATC) TEST SYSTEM 

ACCEPTANCE TEST REPORT 

Job Order 14-409 


PREPARED BY 





0. Toniaro,t/Sen1or Engineer 




:a?J 


APPROVED BY 
Lockheed 


J 


A. L. Roelse, Supervisor 
Spacecraft Systems Test Section 




a 




c-v^^hillip M. Hopkins, Manager 
Tracking and Communication 
Systems Department 


NASA 



William C. Long, Manage 
Spacecraft Systems Test Section 


Prepared By 

Lockheed Engineering and Management Services Company, Inc. 

For 

Spacecraft Systems Test Section 
Tracking and Communications Development Division 

NATIONAL AERONAUTICS AND SPACE ADMINISTRATION 
LYNDON B. JOHNSON SPACE CENTER 
HOUSTON, TEXAS 

February 1982 


LEMSCO-17557 


1. PMpart NOi 2. QomnnwH AccMiion No 

JSC-17917 


4, Tldt and Submit 

Extravehicular Activlty/Air Traffic Control (EVA/ATC) 
Test System Acceptance Test Report 


a. RtcipttflVt CtltlOD No 


1982 


6. Ptffofmlod Or^ntiMiOfi Cod* 


7. Authofii) 

Dominic J. Tomaro 

Lockheed Engineering and Management Services Company, Inc. 


0. JVfofmlnBOr((*nlMtlon Ntmf and Addrtti 

Lockheed Engineering and Management Services Company, Inc. 
1830 NASA Road 1 
Houston, Texas 77258 


12. Spontorlng Agtncy Namt and Addmi 

National Aeronautics and Space Administration 
Lyndon B. Johnson Space Center 

Houston, Texas 77058 JSC Technical Monitor; William C, Long 


B P*r<ormli>B OrMniUtiod Rtiwt No 

LEMSCO-17557 


10. Work Unit No. 


n Coniftcl or CrtM No 
NAS 9-15800 


13 Typt of ntpoti tnd Ptnod Cov*r«d 

Acceptance Test Report 


14. Soonwrlng Agtocy Cod* 



IB. AtNiraci 

During extravehicular activity (EVA), communications between the EVA astronaut and the Space 
Shuttle Orblter are maintained by means of a transceiver Installed 1n the Environmental 
Support System backpack, Onboard the Orblter, a transceiver Line Replaceable Unit and Its 
associated equipment performs the task of providing a communications link to the astronaut 
in the extravehicular actlvlty/alr traffic control (EVA/ATC) mode. 

In order to simulate and test the system, design, and fabrication of the EVA/ATC test system 
was required. 

The acceptance test report outlined In this document resulted from tests that were performed 
on the test system designed and fabricated for EVA/ATC testing. 


17, K*y Wordu (SuggMtfd by Autbor(i)) 

extravehicular activity 
Line Replaceable Unit 

extravehicular act1v1ty/a1r traffic control 


18, 01$trlbuTtpn Suitmtm 


Unclassified - unlimited 


Id. SKuriiy 0*Mtt. lot Ihli repoftl 
Unclassified 


20. Sacurity CltHlf, (of thii p»d«l 
Unclassified 


21, No. of P»«f< 22, Price 

35 


'For laU by the Nelionel Technical Irtformatlon Service, Springliald, Virginia 22161 


JSC Form Nov 7S1 




















ACKNOWLEDGEMENT 


This document was prepared in response to Action Document 80-14-409-02 and 
submitted by Technical Monitor William C. Long, Spacecraft Systems Test 
Manager of the Tracking and Communications Development Division. 

The Spacecraft Systems Test Section of Lockheed Engineering and Management 
Services Company, Inc., designed the console and was responsible for the 
development of the equipment. The Transceiver Test Set was provided to the 
Tracking and Comnuni cations Development Division by the Spacecraft Systems 
Test Section. 


iii 


CONTENTS 


Section Page 

ACRONYMS Vi 

1. INTRODUCTION.... 1-1 

1-1 ORBITER EV A /ATC SYSTEM COMP ONENTS.... 1-1 

1.1.1 EVA/ATC LINE REPLACEABLE UNIT (TRANSCEIVER) 1-1 

1.1.2 ELAPSED TIME METER.... 1-1 

1.1.3 LRU TEMPERATURE INDICATOR 1- 1 

1.1.4 DISCRETE MONITOR ASSEMBLY.. 1-6 

1.1.5 TEST POINT PANEL 1-6 

1.1.6 LOGIC CARD CAGE ASSEMBLY 1-9 

1.1.7 INPUT/OUTPUT ASSEMBLY 1-9 

l.l.B POWER DISTRIBUTION BOX....... 1-9 

1.1.9 PATCH PANEL 1-9 

1.1 .10 MODE CONTROL PANEL 1-9 

^•2 PERIPHERAL EQUIPMENT 1-11 

1.2.1 SHIELDED ENCLOSURE 1 (SEN-1) WALL PANEL 1-11 

1.2.2 RF PATH TEST SYSTEM 1-11 

1.2.3 STATUS BOARD INTERFACE UNIT 1-11 

1.2.4 POWER CONSOLE 1-11 

2. PRETEST REQUIREMENTS 2-1 

3. TEST PROCEDURES 3-1 

4. APPLICABLE DRAWINGS......... 4-1 

Appendix Page 

A. TEST PREPARATION SHEETS A-1 

B. CONSOLE INTERFACE DIAGRAM B-1 

iv 



FIGURES 


Figure Page 

1 Orbiter EVA/ATC test system 1-2 

2 EVA/ATC test system side view.... 1-3 

3 Elapsed time meter panel...... 1-4 

4 LRU temperature monitor panel 1-5 

5 Discrete monitor functions panel 1-7 

6 Test point panel 1-8 

7 UHF mode control panel 1-10 


V 


ACRONYMS 


AGC automatic gain control 

ATC a1r traffic control 

AVC automatic volume control 

DVM digital voltmeter 

EVA extravehicular activity 

6 RCV guard receiver 

G T/R guard transceiver 

LRU Line Replaceable Unit 

PTT Push to Talk 

RF radio frequency 

RMS root mean square 

SEN shielded enclosure 

SS Space Shuttle 

UHF ultra high frequency 

VHF very high frequency 


Vi 



1. INTRODUCTION 


During extravehicular activity (EVA), communications between the EVA astronaut 
and the Space Shuttle Orbiter are maintained by ineans of a transceiver in- 
stalled in the Environmental Support System backpack. Onboard the Orbiter, a 
transceiver Line Replaceable Unit (LRU) and its associated equipment performs 
the task of providing a communications link to the astronaut in the extra- 
vehicular activity /air traffic control (EVA/ATC) mode. This transceiver also 
provides communications between the Orbiter and the ground and the chase 
planes* 

In order to simulate and test the LRU's, the EVA/ATC test system was designed 
and fabricated (see figure 1). The acceptance test procedure, included as 
appendix A of this document, was used to substantiate the proper operation of 
this system for tests to be conducted in the Shielded Enclosure I (SEN-1). 

The following data is a tabulation of the test results obtained during the 
System Acceptance Test. These results indicated that the system was operating 
properly with the required parameters for SEN-1 use. 

RF POWER LEVEL CARRIER ONLY 


Frequency, 

MHz 

Mode 

switch 

Result, 

dBm 

Comments 

259.7 

Amp off simplex 

-6.0 

-5+1 dBm 

296.8 

Amp off simplex 

-4.4 


296.8 

Amp on simplex 

11.5 

16 dBm gain from 
power amp 

296.8 

Amp off simplex 
Guard transceiver 

-4.6 

-5+1 dBm 

296.8 

Guard transceiver 

-6.2 

-5+1 dBm 

296.8 

EVA 

-4.6 

-5 + 1 dBm 

296.8 

EVA 

-4.6 

-5+1 dBm 

259.7 

EVA 

6.2 

5 + 1 dBm 


1-1 



Figure 1.- Orbiter EVA/ATC test system. 


1-2 









RF POWER LEVEL CARRIER AND 1 KHZ AT 50 PERCENT 
MODULATION WITH 600 OHM LOAD 



Frequency, MHz 

Mode 

Results, dBm 


269.7 

EVA 

0 


279,0 

tVA 

0 


296.8 

EVA transmit 

0 


279.0 

EVA transmit 

0 


EVA LRU CARRIER FREQUENCY MEASUREMENT 


WITH A FREQUENCY COUNTER 


Frequency, MHz 

Mode 

Results, MHz 


259.7 

Simplex 

259.71 


296,8 

Simplex 

296.80 


296.8 

Guard transceiver 

243.01 

SQUELCH AND AGC LEVEL VERIFICATION 

Frequency* 

MHz 

Mode 

Results 

243.0 

Simplex and guard receive 

AGC level 2.5 Vdc 

243.0 

Reduce RF 

level 

Verify AGC reduction 

243.0 

Squelch on 

, set RF at 3 mV 

AGC level 2.5 Vdc 

243.0 

Reduce RF 

level 

Verify receiver squelches 

296.8 

Squelch off, set RF at 3 mV 

AGC level 2.5 Vdc 

296.8 

Reduce RF 

level 

Verify AGC reduction 

259.7 

EVA, 3 mV 

RF 

AGC level 2.5 Vdc 

259.7 

Reduce RF 

level 

Verify AGC reduction 

279.0 

Squelch off, set RF at 3 mV 

AGC level 2.5 Vdc 

279.0 

Reduce RF 

level 

Verify AGC reduces 


1-3 











1-1 ORB I TER EVA/AT C SYSTEM COMPONENTS 

1.1.1 EVA/ATC LINE REPLACEABLE UNIT (TRANSCEIVER) 

The Extravehicular Communicator is a vendor-furnished> space-qualified trans- 
ceiver unit installed in the Orbiter to enable communications between the EVA 
astronaut and the Space Shuttle (SS), the ground and SS» and the chase planes 
and S$. To allow support of in-house testing, the LRU Is mounted on a heat 
sink in the inside rear of a test system cabinet (see figure 2). 

1.1.2 ELAPSED TIME METER 

This panel contains an elapsed time meter to measure the cumulative time that 
power is applied to the transceiver LRU (see figure 3). 

1.1.3 LRU TEMPERATURE INDICATOR 

This panel contains a temperature indicator and a thermocouple system which is 
used to measure the transceiver LRU temperature at the estimated highest tem- 
perature point (see figure 4). 

1.1.4 DISCRETE MONITOR ASSEMBLY 

Indicator lights on this panel (see figure 5) display the status of discrete 
signals as follows: 

• EVA transceiver on 

• EVA transceiver off 

• Simplex operation 

• Simplex and ground receiver 

• Ground transmit/receiver 

• 296.8 MHz on 

• 259.7 MHz on 

• Squelch off 

• Squelch on 


1-4 


TRANSCEIVER 

LRU 







1-7 


Figure 4.- LRU temperature inonitor panel. 




1-8 


Figure 5.- Discrete monitor functions panel 















• Power anplifier on 
0 Power amplifier off 

1.1.5 TEST POINT PANEL 

The test points located on this unit all<^w measurements to be taken of 
functions available from the transcei v-rr L^UVs (see figure 6), These 
functions are: 

0 Automatic gain control (A6C) for receivers Rl, R2, R3, and R4 
0 Squelch for these receivers 
0 Video 

0 Automatic volume control (AVC) for transmitters Tl, T2, and T4 
0 Clipper for the audio of transmitters Tl, T2, and T4 
0 Audio level measurements for transmitters Tl, T2, and T4 

1.1.6 LOGIC CARD CAGE ASSEMBLY 

The logic card cage is located at panel A9 inside the cabinet (see figure 2). 
It contains the printed circuit board assembly required for the control and 
operation of the test system, as well as the status signals for the discrete 
monitor panel indicators and discrete signals for the display boards in the 
test control center. 

1.1.7 INPUT/OUTPUT ASSEMBLY 

The input/output assembly, located at panel A5 inside the rear of the cabinet, 
contains the connectors required to interface the test system with the exter- 
nal interface system (see figure 2). 

1.1.8 POWER DISTRIBUTION BOX 

Power for the test system is made available to the power distribution box at 
distribution panels A6 and A7 from an external power rack and distributed to 
the various components in the test system from connections in the distribution 
box (see figure 2). 


1-9 



1-10 


Figure 6.- Test point panel. 



1.1.9 PATCH PANEL 

The patch panel contains 26 sockets In an ovep/under configuration to enable 
monitoring and patching of signals as follows: 

• Transmit audio 

• Receiver audio 

0 Electrocardiogram input 1 
0 Electrocardiogram input 2 
0 Push to Talk (PTT) 

1.1.10 MODE CONTROL PANEL 

The mode control panel, located in the audio test system, selects the fre- 
quencies of operation (296.8 or 259.7 MHz), power amplifier status, and 
squelch (see figure 7). A mode selection list follows: 

0 EVA 

0 Simplex (both transceivers on the same frequency) 

0 Simplex and guard receiver (G RCV) 

0 Guard transceiver (G T/R) duplex operation of the transceiver and the G T/R 
1.2 PERIPHERAL EQUIPMENT 

The functions of the peripheral equipment (see appendix B) are discussed in 
sections 1.2.1 through 1.2.4. 

1.2.1 SEN-1 WALL PANEL 

The SEN-1 wall panel allows signal transfer between SEN-3 and SEN-1 without 
breaking the integrity of the shielded enclosure. Radio frequency (RF) and 
analog signals are distributed to the RF path test system and the logic card 
cage from the wall panel. 


1-11 




1-12 


Figure 7.- UHF mode control panel 



1.2.2 RF path test SYSTEM 

Utilizing RF circulators and appropriate plumbing, the S-band and Ku-band 
signals are routed through the RF path drawer and fed to the input/output 
panel to permit the desired mode of operation to be selected. 

1.2.3 STATUS BOARD INTERFACE UNIT 

Located outside of the EVA/ATC test system, this unit permits the interface of 
the test center status boards with the signals from the logic card at panel A9 
in the EVA/ATC test system. 


1-13 


2. PRETEST REQUIREMENTS 


The pretest requirements for the EVA/ATC system requires the following 
procedures, 

1. Determine that the LRU is installed and the coolant system is functioning. 

2. Obtain a calibrated RF signal generator capable of generating the 259.7 
and 296.8 MHz signals required by the system. 

3. Obtain a calibrated RF type power meter equipped with a 30 dBm attenuator. 

4. Obtain a calibrated oscilloscope, counter, and digital multimeter. 

NOTE: The Test Preparation Sheets are located in appendix A. 


2-1 


3. TEST PROCEDURES 


The test procedures for the EVA/ATC system requires the following procedures. 

1. The power required for operation of the EVA/ATC system is provided by the 
power supply console located in SEN-1. Activate this power supply to 
furnish the required voltages for this acceptance test. 

2. Connect a Hewlett Packard 435 RF power meter with a 30 dB attenuator in 
series with the input lead to AlOJl. 

3. On the ultra high frequency (UHF) mode panel, set the selector switch to 
Simplex. Key the transmitter at A7J11 and note the RF power reading 
(approximately -6 dBm). 

4. Unkey the transmitter and select the 296.8 MHz channel on the UHF mode 
panel. Key the transmitter and note the RF power reading (approximately 
-4.5 dBm). Unkey the transmitter. 

5. Turn on the power amplifier on the UHF mode panel and key the trans- 
mitter. Note that the RF power meter reads approximately 11 to 12 dBm. 
Unkey the transmitter. Turn off the power amplifier. 

6. On the UHF mode panel, set the selector switch to the Simplex + G RCV 
position and key the transmitter. The power meter reading should be 
approximately -4 to -5 dBm. Unkey the transmitter. 

7. On the UHF mode panel, set the selector switch to G T/R and key the 
transmitter. The power meter reading should be approximately -6.8 dBm. 

8. On the UHF mode panel, set the selector switch to the EVA mode and key 
the transmitter. The power meter should read approximately -4 to -5 dBm. 
Unkey the transmitter. 

9. On the UHF mode panel, set the PWR AMP switch to the ON position. Key 
the transmitter and note that the power meter reads approximately 
-4.6 dBm. Unkey the transmitter. 

10. On the UHF mode panel, set the frequency select switch to 259.7 MHz and 
key the transmitter. The power meter should read approximately -6.2 dBm. 
Unkey the transmitter and remove the power meter. 


3-1 



11. This phase of the test requires the use of an RF signal generator and an 
oscilloscope. Adjust the signal generator at 269.7 MHz, modulated at 

50 percent with a 1 kHz signal for an RF output of 3 mV. Connect the 
signal generator to A7J5. 

12. Connect the oscilloscope to A7J5 and verify the presence of the 1 kHz 
sine wave. Remove the oscilloscope and connect a root mean square (RMS) 
type voltmeter in its place with a 600 ohm load attached. The level of 
reading should be approximately 0 dBm. 

13. On the very high frequency (VHF) mode control panel, set the selector 
switch to EVA. The meter reading should be 0 dBm. Set the frequency 
switch to 279,0 MHz. Set the signal generator to 279.0 MHz and note that 
the meter should read approximately 0 dBm* 

14. Adjust the RF signal generator to 295.8 MHz. Select 295.8 MHz on the UHF 
mode control panel. The meter should read approximately 0 dBm. 

15. Adjust the RF signal generator to 279.0 MHz. The meter reading should be 
approximately 0 dBm. Remove the RF signal generator and connect a 
counter through a 30 dBm load to connector AlOJl. 

16. On the UHF mode control panel, select Simplex and the 259.7 MHz trans- 
mitter frequency. Key the transmitter and note the counter frequency, 
which should be 259.7 MHz. Unkey the transmitter. 

17. Select the 296,8 MHz transmit channel and key the transmitter. The 
counter frequency should read 296.8 MHz. Unkey the transmitter. 

18. Select the G T/R mode and key the transmitter. The counter frequency 
should read 243.0 MHz. Unkey the transmitter. 

19. Turn the selector switch on the UHF mode panel to OFF. Connect the 
digital voltmeter to A5J4. Set the Squelch switch to the OFF position. 
Adjust the RF signal generator to 243 MHz unmodulated, 3 mV RF level. 
Remove the counter and connect the RF signal generator to AlOJl. 

20. On the UHF mode panel, set the selector switch to the Simplex + 6 RCV 
position and note the reading (approximately 1.37 Vdc) on the digital 
voltmeter (DVM). Reduce the RF level on the signal generator and note 
that the A6C reading reduces accordingly. Reset the RF level to 3 mV. 


3-2 



21. Connect the oscinoscope to A7J5, Set the Squelch switch on the UHF node 
panel to i'1. Reduce the RF level and verify that the receiver 
squelches. Turn the Squelch OFF. 

22. Reset the RF signal generator to 296.8 MHz at 3 nV. Note that the DVM 
AGC reading 1s approximately 4.3 V. Reduce the RF level and verify that 
the AGC voltage reduces accordingly. 

23. On the UHF mode panel, set the selector switch to EVA. Set the RF signal 
generator to 259.7 MHz at 3 mV. Note that the DVM reads approximately 
4.3 V. Reduce the RF level and verify that the AGC level reduces accord- 
ingly. Switch the selector switch to the OFF position and remove the 
test equipment. 


3-3 



4. APPLICABLE DRAWINGS 


The following drawings are applicable to the EVA/ATC test systen* Copies nay 
be obtained from Document Control. 

SID36122570 Console Interface Diagram 

SID36122609 Wiring Diagram, Elapsed Tine Meter 

SID36122607 Wiring Diagram, Temperature Monitor 

SID36122608 Schematic, Discrete Monitor 

SID36122583 Wiring Diagram, Test Points Panel 

SID36122550 Card Cage, Wire List 

SID36122573 Card Cage, Wiring Diagram 

SID36122546 Schematic, Mode Control A25 

SID36122548 Wire Wrap Board, Discrete and AFhlog 


4-1 



APPENDIX A 


ACCEPTANCE TEST PROCEDURE 



OF PWR QUAUTy 


1 A ’CONFIOUHATtON 
1. I M CHANCE 

^ • rtRM" ’ “fiEMP“i“ 

I t 


TEST PnEPARATION 


SHEET 


3, ; 4. 

OnOAN 1 -- 

PACE 1 OF 


e'D NONCONFIOURATION V NASA- LYNDON B. JOHNSON SPACE CENTER OP'ft 

D CHANCE ^ f|//i 

e.’MOD §H6ET{S( NUMBERlSr ;,"CONinACT NO./JOD NO."”“' ” 'OAhT/MODEL NO. 

■ M 79452 :i 5 C 


a, MPPLICABLC DOCUMENTATION 

lTTlME7cyCLE'DATA “ 

UPDATE REQUIRED 

lirsWnr TiftToF TTs'^^^ 



U. SYSTEM 


8379452-503 

10. sen iAU NUMBER 

\m 




14. OPERATIONS 
(Print, Typt or Wriu L*alblo> 



— 9 CQna£Ct.i^;i„PQW£r.Jiuppl\LCQnSQljgJ;p_ib g_EVA/ATC Con sole 

^L_. 

-40,. . . Act.ivate.ihe..f^:st PoWfiC^SupplxConsoJ e _ 

R. originator |DATu 10. PINAL ACCEPTANCE ^ ' 

I STAMP AND DATE S'^/9''f / ’ 


20. CONT.. ACTOR 


DATE |21. NASA 




j^‘ 













gUil.SAL PA® IS 

OP POOR QUAUTY 


TEST PREPARATION SHEET 

CONTINUATION SHEET 

NASA - LYNOON ■, JOHNSON SPACE CENTER 


OP60. i 
SEO, 























0RK51NAL PAGE IS 

OF POOR QUAUTY 


/ TEST PREPARATION SHEET 

1 CONTINUATION SHEET 

TPS, NO. 

0§f 

MOO, NO. 



NASA - tVNOON B. JOHNSON SPACE CEfv 'EH 

OROAK 

PAGE 3 OF 

"ope nr 

&EQ. 

OrCHATIONS 

♦Print, TVp« or VJtll* UoibUI 

TECH, 

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contT 

ation" 

NASA 

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7 

[ 



29 

liaoawrv 

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Sfilect G T/R .. . . , , ( 





\ 



Kov Xniitter*, . , 






' 



31 

Record RF pov/er. ^ .... . ( 









32. 

Solect. EVA , . - - \ 


HH 




HH| 



Kev Xinitter 

[■I 

IHI 




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HHI 


34 

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Record RF cov/er ... ^ ^ 





m 



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36 

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HI 





jm 

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Kcv. Xmitter.... .. - 


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■B 

Sh 


38. , 

Record RF oov/er *r, 7^3 ^ / 




BPH 

( 




UMI 

Unkev Xmitter \ 



hB 

■■I 



HHi 

HHI 

40 

Select Xmitt freq 259/7 life / 


;HH1 

HI 


/ 



Bh 

' 

< 1 

Kev Xmitter 1 

Ijifl 

i|B 

HHI 

\ 

HI 

mm 

HH 

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Record RF Power C> * ^ 




IIIIBIIH 

4 




mijiii 

Unkev Xmitter. 4?. 

a 


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IHHI 


n |,2«* » »\ M *v ; Jill 


A-3 








ORIGU^AL W 

OF POOR QUALITY 


TEST PREPARATION SHEET 

CONTINUATION SHEET 

NASA - LYNDON B. JOtiNSON SPACE CENTER 




OPERATIONS 

(Print, Typr nr Y/rlta L»gibl«) 

MNL'JuawAiA * -'.i«4;';w«/Junnairwu^ 


Ranove RF power meter 






Set UP Rtx)de & Swartz RF Sign&l Generator for 259.7 l!Hz 
modulated 50% at 1 KHz, for an RF output of 3 mV 


Connect RF signal Generator to AlOJl 





Connect oscilloscope to A7J5 


— 

Verify presence of 1 KHz sinewave 

< 9 ^ 


Replace oscilloscope with HP 3400 R!iS Voltmeter with 600 
load 


50 I Record level as read oi>. HP 3400 


51 Select EVA 



54 I Set RF signal generator for 279 MHz 


55 Record level as read on HP 3400 &S/\ 


56 I Set RF signal generator for 296.8 flHz 


57 I Select 296.8 HHz Xir.itt f> 



59 I Set RF signal qeiierator for 279 iiHz 
































0R!,G5WAL PACS TJ 
OF POOR QUALITY 



TEST PREPARATION SHEET 

CONTINUATION SHEET 

NASA - LYNOON B. JOHNSON SPACE CENTEB 


61 I Remove RF signal generator 


62 I Connect HP 534 5A 'counter to AlOJl. thru 30db 


63 I Select SIMPLEX Mode 


64 1 Select 259.7 MHz Xmitt fre 



Reco rd freque n c y from Co unter 9 


67 I Unkcy Xmittor 



68 1 Select 296.8 MKz Xmitt f> 


69 I Key Xmit ter 


70 Rpcor^ £r2puGncyX*'M-PP'jp.t:®r 9 C . Po 


71 I Unkey Xmitter 


72 1 Se lect G t /R Mo de 


W-5. 0 / A/i 






















page is 

OF POOR QUAUTY 



TEST PREPARATION SHEET 

CONTINUATION SHEET 

NASA - LYNDON C. JOHNSON SPACE CENTER 



OPERATIONS 

(Piint, Typ* or Wdi* Logiblt) 


IPAOE OF r 


VERIFICATION 


77 i Connect Hp 3455 DVM to A-^ -/f S' T</ ' 


78 1 Set SQUELCH TO OFF 



79 Set Rf 


3 mv RF level 


80 iRemove counter and connect RF signal generator to AlOJl 


81 Set MODE switch to Simplex + G Rev. 


82 iRecord AGC level Joe. 


■ — - — — 

83 Reduce RF level and verify AGC level nsdirjes accordingly 


84 iReset RF le^el to 3 mV, Connect s' scope to A7J5 




86 [ Reduce RF level and verify that r e ceiver squelches O • 


87 [Set Squelch OFF 


88 [change RF Signal Generator to 286.8 Mhz at 3 mV 



————————— ~ - ~ — jJiJilii — 

80 [Reduce RF level and verify AGC level reriiic^is accordingly 


91 Set MODE switch to EVA 



A-6 



































OTGiNfU- 

OK W QUAL'TY 


TEST PREPARATION SHEET 

CONTINUATION SHEET 

NASA ^ LYNDON B. JOHNSON SPACE CENTEH 


tps.no. 


MOO. NO. 


^jLJ„P^j?P,L 




OPERATIONS 

(Print, TVpt or Writi LogiibU) 


L_S 2 — ^^t_EE-aisniilJjejiBr^LtxjJc.Ji^ 


BecQrxl..AGC.Jjiyfij .■ 


PAGE 7 or 7' 

nr l^1ll^■ w.iMliRit.niji. ,11 

TireM VERIFICA TION 

coinTTNA;; 

wHfcVvr'r'-'p-r#*.* u 

I 


'smhn 


: 

■Rodtice RF level and verify AGC Ifivel aocordinaly 


_Set.^F. S.i^iial_Genecfltaii.ta.2I9J;!H2L^^^^ 


.RfiCQrjdJifiCJ.ey e]___ 


IIDDE. sw,i.tch_to_QFF.. 



>1 









APPENDIX B 

CONSOLE INTERFACE DIAGRAM 




















mm 


5 


3 


2 


numin I PA re I M>w<ovAa 


ORIGINAL PAGc (3 
OR POOR QUALITY 


yo PANCL 


ji jP2u^i^4pnjr 


>,cyR 


[PI iJ3 


rpirm 


PATCH 

PANEL 


[miz 


FI U3I