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ORBITER S-BAND FM SYSTEM OVP. " 6 / C- ? */
CONSOLE TEST PROCEDURE
Job Order 14-409
(NAS A-CE-151694) DPBITEP S-BAND FN SYSTE“
CONSOLE TEST PROCEDURE (Lockheed Electronics
CO.) 4^ p HC AOVMF AOI CSCL WB
GV3 2
N78-21 338
Unci as
ISf 4 3
Prepared By
Lockheed Electronics Company, Inc.
Systems and Services Division
Houston, Texas
Contract NAS 9-15200
For
SPACECRAFT SYSTEMS TEST
TRACKING AND COMMUNICATIONS DEVELOPMENT DIVISION
'y,'-
J ■
National Aeronuutien and Space Administration
LYNDON B. JOHNSON SPACE CENTER
Houston^ Texas
February 1978
LEC-11783
SHUTTLE
ORB I TER S-BAND FM SYSTEM
CONSOLE TEST PROCEDURE
Job Order 14-409
PREPARED BY
G. D. Doland, Principal Engineer
Spacecraft Systems Test Section
Lockheed Electronics Company, Inc.
APPROVED BY
LEC
NASA
L. Roelse, Supervi;
A. X. Roelse, Supervisor 'W. C. Long, Managed*
Spacecraft Systems Test Section Spacecraft Systems Te^lT^^^
O'. S. Creamer, Mana
Tracking and Common
Systems Department
ions
D. C. Dittmar
Quality Engineering
Prepared By
Lockheed Electronics Company, Inc.
For
Spacecraft Systems Test
Tracking and Communications Development Division
NATIONAL AERONAUTICS AND SPACE ADMINISTRATION
LYNDON B. JOHNSON SPACE CENTER
HOUSTON, TEXAS
February 1978
L.
SHl
ORBITER S-BAND FM SYSTEM
CONSOLE TEST PROCEDURE
Job Order 14-409
APPROVED BY
(t'/ -‘hlhi
D. t). Dittmar
Quality Engineering
C. Long, Manager
Spacecraft Systems Test
Prepared By
Lockheed Electronics Company, Inc.
For
Spacecraft Systems Test
Tracking and Communications Development Division
NATIONAL AERONAUTICS AND SPACE ADMINISTRATION
LYNDON B. JOHNSON SPACE CENTER
HOUSTON, TEXAS
February 1978
LEC- 11783
SHUTTLE
o
1. Remrt No.
2. Government Accession No.
3. Recipient’s Catalog No.
4. Title and Subtitle
ORBITER S-BAND FM SYSTEM CONSOLE
TEST PROCEDURE
5. Report Date
February 1978
6. Performing Organisation Code
625-10
7. Author(s)
G. D. Doland
8. Performing Organisation Report No
LEC-11783
10. Work Unit No.
63-1551-4409
9. ^forming Orgeniiation Name and Address
Lockheed Electronics Company, Inc,
Systems and Services Division
Houston, Texas 77058
11. Contract or Grant No.
NAS 9-15200
13. Type of Report and Period Covered
Test Procedure
12. Sponsoring Agency Neme and Address
National Aeronautics and Space Administration
Lyndon B. Johnson Space Center
Houston, Texas 77058
14. Sponsoring AgerKy Code
EEfl
15. Suppitmtntary Note*
o
16. AtMtract
This document describes the S-band frequency modulated system console
and gives the step-by-step test procedure for verifying proper construction
of the console prior to installation of flight equipment.
17. Key Wordi (Suggntad by AuthorUII
Orbiter Test System
S-band FM System
r
18. Distribution Statement
19. Sacurity Oanif. (of this report)
None
20. Security Clauif. lot this page)
iNone
21 No of Pages
40
22 Price*
None set
‘For ule by the National Technical Information Service. Springfield. Virginia 22161
i i i
JSC Form 1424 (Rev Nov 7SI
NASA — JSC
JSC-13872
ACKNOWLEDGMENT
This document was prepared in response to Action Document
76-17-069-49 submitted by the Technical Monitor, William C. Long,
Manager of the Spacecraft Systems Test of the Tracking and Com-
munications Development Division.
The Orbiter S-band FM system console was designed by R. J. Davis
of the Spacecraft Systems Test Section of Lockheed Electronics
Company, Inc. /Systems and Services Division. George D. Doland,
Principal Engineer of the Spacecraft Systems Test Section, pre-
pared this console test procedure.
JSC-13872
CONTENTS
Section Page
1. INTRODUCTION 1-1
1.1 CONSOLE DESCRIPTION 1-1
1.2 SPACECRAFT ITEMS 1-1
1.3 EQUIPMENT DESCRIPTION 1-3
1.3.1 INDICATORS AND METERS 1-3
1.3.2 DISCRETE SIGNALS 1-3
1.3.3 ISOLATION AMPLIFIERS 1-3
1.3.4 PATCHING FACILITIES 1-5
1.3.5 CARD FILE 1-5
1.3.6 GROUND CONTROL 1-5
1.3.7 CONTROL PANEL 1-5
1.4 TEST EQUIPMENT 1-5
2. TEST PROCEDURES 2-1
2.1 PRETEST REQUIREMENTS 2-1
2.2 TEST EQUIPMENT CALIBRATION 2-1
2.3 POWER WIRING VERIFICATION 2-1
2.4 VOLTAGE MEASUREMENTS 2-1
2.5 CONTROL CIRCUITS 2-1
2.6 MONITOR CIRCUITS 2-1
2.7 SIGNAL DISTRIBUTION 2-2
2.8 COOLING AND TEMPERATURE 2-2
Appendix
A TEST SEQUENCE AND DATA SHEETS A-1
V
o
JSC-13872
ABBREVIATIONS AND ACRONYMS
O
ATS
Automated Test System
Bi -({) -L
biphase level
dB
decibel
dBm
decibel referred to 1 milliwatt
DPI
development flight instrumentation
ESTL
Electronic Systems Test Laboratory
op
degrees Fahrenheit
FM
frequency modulated
GSE
ground support equipment
Hz
hertz
Kbps
kilobit per second
kHz
kilohertz
LRU
line replaceable unit
Mbps
megabit per second
MHz
megahertz
NRZ-L
nonreturn- to - zero level
OTS
Orbiter Test System
PCM
pulse code modulation
PM
phase modulation
RF
radio frequency
RMS
root mean square
TPS
test preparation sheet
TV
television
VCO
voltage-controlled oscillator
VI
JSC-13872
1. INTRODUCTION
The Orbiter S-band frequency-modulated (FM) system console is
one of several consoles comprising the Orbiter Test System (OTS).
The OTS will be used by the Electronic Systems Test Laboratory
(ESTL) to support performance and compatibility testing. The
acceptance test of the FM system console will be performed in
the Spacecraft Systems Test Laboratory.
1.1 CONSOLE DESCRIPTION
The console was designed in accordance with the design document
for Space Shuttle Task 501, Orbiter S-band FM System, LEC-10929,
JSC-11604, dated August 1977.
Figure 1-1 is a sketch of the completed console. The principal
panels and assemblies provide for mounting running-time indica-
tors for t'le flight equipment, an indicator for monitoring the
FM transmitter output power level and temperature, discrete sig-
nal status monitors, isolation amplifiers, logic card file, power
distribution box, signal patch connectors, and control switches.
The control panel will be located externally from the S-band FM
system console.
The S-band FM system is used for transmitting recorded data,
television data, main engine data, payload data, and encrypted
data. Some data are digital while other data are analog. The
console test provides procedures for verification of console
wiring.
1.2 SPACECRAFT ITEMS
There are three spacecraft items in the S-band FM system console:
the FM transmitter, the FM signal processor, and the radio
frequency (RF) diplexer. Only two units are active, whereas
the RF diplexer is passive and provides the capability to use
1-1
JSC-13872
the same antennas for the S-band FM system and development flight
instrumentation (DFI) transmitter.
The FM transmitter has provision for only one signal input which
is used to modulate the transmitted carrier. All processing and
signal selection is provided by the FM signal processor. Some
signals are conditioned by the signal source prior to being fed
to the FM signal processor.
1.3 EQUIPMENT DESCRIPTION
The major items of the console were identified in section 1.1.
Figure 1-2 is a sketch showing the approximate internal config-
uration of the console. The items, which include controls,
ind'v'.ators or connectors that must be accessible during testing,
arc described in detail in the following paragraphs.
1.3. \ INDICATORS AND METERS
The top two panels are shown in figures 1-1 and 1-2. The upper
panel contains two elapsed time indicators, one for the S-band
FM transmitter and the other for the FM signal processor. The
lower panel contains a meter for measuring the temperature using
a monitoring circuit.
1.3.2 DISCRETE SIGl, vLS
The third panel from the top of the console contains indicators
for the functions selected and indicators for discrete functions
from the flight equipment.
1.3.3 ISOLATION AMPLIFIERS
Below the discrete monitor function indicators is a panel con-
taining buffer and isolation amplifiers. These amplifiers are
also used to change signals from unbalanced to balanced or
balanced to unbalanced signals. The signals provided or used by
1-3
SYSTEM S09
LRU ELAPSED
TIME METER UNIT
LRU TEMPERATURE
MONITOR UNIT
S BAND FM
DISCRETE
MONITOR FUNCTIONS
VIDEO AMPLIFIERS
ANALOG FUNCTIONS
BLANK
PATCH PANEL
OCIL UMBILICAL
CONTROL
BLANK
Figure
.ISC- 13872
the test equipment are usually balanced; the flight equipment
requires balanced signals,
1.3.4 PATCHING FACILITIES
Patching facilities are located lower in the console. The
patching facilities provide a means to channel the configuration
easily and also to monitor signals to or from the S-band FM
system console.
1.3.5 CARD FILE
The card file, located in the rear of the console, contains
buffers and lamp drivers. Sec figure 1-2 for a detailed sketch
of the console including the card file.
1.3.6 GROUND CONTROL
Below the patch panel is the ground control logic interface
control panel which contains a single switch. This panel is
shown in figures 1-1 and 1-2.
1.3.7 CONTROL PANEL
Figure 1-3 is a drawing of the control panel. The control panel
is not located in the Orbiter S-band FM System console, hut instead
it is mounted with other controls in a centralized location.
1 . 4 TEST EQUIPMENT
The purpose for the console test is to ensure that wiring is
correct prior to installation of the flight equi]inient that could
be damaged due to a wiring error. System performance with the
flight equipment installed will be determined during the accep-
tance test. For the console test, the test equipment reijuired
includes :
1. Continuity tester
1-5
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O
1-6
T 7 T-
I
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2. Multimeter
3. Digital voltmeter
4. Wide range oscillator
5. Square wave generator
6. Oscilloscope
7. Differential amplifier plug-in
ORIG nVAL PAGP
Of ’ Poor quality
1-7
JSC-13872
(D
2. TEST PROCEDURES
The step-by-step procedures are contained in the appendix. Below
are brief explanations of the test sequences to be performed.
2.1 PRETEST REQUIREMENTS
The purpose for this sequence is to ensure that all preliminary
steps have been performed prior to starting the console test.
Items that are incomplete, may in some cases, be noted and the
procedure started if authorized by the Ta ^nical Monitor.
2.2 TEST EQUIPMENT CALIBRATION
The purpose for this step is to record the test equipment used
and calibration date.
2 . 3 POWE R WIRING VERIFICATION
The puri se for this test is to check the powar circuit wiring
for continuity and shorts prior to the application of power.
2.4 VOLTAGE MEASUREMENTS
The purpose for this test is to measure the voltages at the
flight equipment connectors to verify the voltage and polarity.
The Orbiter Power System console is used as the source of power.
2.5 CONTROL CIRCUITS
The purpose for the control circuit test sequence is to ensure
that the controls provide the correct signals to the flight
equipment .
2.6 MONITOR CIRCUITS
The purpose for this test is to verify that the digital logic
circuits correctly operate and provide power to the indicator
2-1
C)
JSC-13872
lamps. This test is performed by applying signals at the flight
equipment connectors.
2.7 SIGNAL DISTRIBUTION
The purpose for this test is to verify the signal distribution
wiring and buffer circuits in the digital logic assembly. These
are functional tests and detailed performance testing is deferred
until the acceptance tests.
2 . 8 C OOLING AND TEMPERATURE
In preparation for the acceptance test, the console cold plates
will be connected to a source of cooling water; the flow of
cooling water will be verified and the temperature indicator
operation verified.
O
2-2
APPENDIX
TEST SEQUENCE
AND
DATA SHEETS
2.1 PRETEST REQUIREMENTS
JSC- 13872
Date
Qua! ity
Control
1. Verify that the following items are complete:
a. Drawing index complete.
b. Top assembly drawing complete.
c. Set of prints complete.
d. OPS Console complete.
e. Cooling System Console complete.
f. Visual inspection complete.
g. Assemblies inspected and accepted.
h. Cabling verified.
2. Data recorded
A-1
JSC-13872
Date
2.2 TEST EQUIPMENT USED Quality
Control
1. Continuity Tester
2. Multimeter
3. Digital Voltmeter
4. Wide Range Oscillator
5. Square Wave Generator
A-2
JSC- 13872
Date
1
I
i
I
:l ■
5
6. Oscilloscope
Qual ity
Control
JSC-13872
Date
2.3 POWER WIRING VERIFICATION Quality
Control
1. Verify that there is no continuity between all
pins on connector 809-A13-J1 to chassis ground
except for contact k.
2. Measure the resistance between chassis ground
and contact k of connector 809-A13-J1. CLess
than 1 ohm.)
3. Verify that there is greater than 10 K ohms
resistance between the following contacts on
connector 809-A13-J1.
pin and pin
L
E
V
W
X
A- 4
o
0
JSC-13872
Date
Quality
Control
Verify continuity
between
connector contacts
the terminal board
terminals listed below:
Connector contact
Terminal connection
A13-J1-K
A11-TB2-19
A13-J1-K
A11-TB3-6
A13-J1-L
A:1-TB2-15
A13-J1-L
A11-TB3- 2
A13-J1-M
A11-TB2-17
A13-J1-M
A11-TB3-10
Verify continuity
between
connector contacts
listed below:
A13-J1-K
and
W26-P6-V
A13-J1-L
and
W26-P4-B
A13-J1-M
and
W26-P7-V
6. Place the POWER switch on the FM Control panel
to the OFF position. Verify that there is no
continuity between the connector contacts and
the terminal board terminals listed below:
Connector (
contact
Terminal connection
A13-J1-B
and
A11-TB2-14
A13-J1-A
and
A11-TB2-18
A13-J1-C
and
A11-TB2-16
A-5
JSC-13872
Date
Quality
Control
7. Place the POWER switch on the FM Control panel
to the 1 position. Verify continuity between
the following connector contacts and terminals
listed below:
Connector contact Terminal connection
A13-J1-B and A11-TB2-14
A13-J1-A and A11-TB2-18
Verify that there is no continuity between
A13-J1-C and A11-TB2-16
8. Place the POWER switch on the FM Control panel
to the 2 position. Verify continuity between
the following contacts and terminals listed
below:
Connector contact Terminal connection
A13-J1-B and A11-TB2-14
A13-J1-C and A11-TB2-16
Verify that there is no continuity between
/U3-J1-A and A11-TB2-18
9. Verify continuity between the following
connector contacts and terminals:
Connector contact Terminal connection
A13-J1-B
and
A11-TB3-1
A13-J1-A
and
A11-TB3-5
A13-J1-C
and
A11-TB3-9
W26-P4-A
and
A11-TB3-3
W26-P6-L
and
A11-TB3-7
W26-P7-L
and
A11-TB3-11
A-6
JSC-13872
Date
Quality
Control
Verify that there
is at least
10 K ohms resis-
tance between the
following connector contacts
W26-P4-A
and
W26-P4-B
W26-P6-L
and
W26-P4-V
W26-P7-L
and
W26-P7-V
Verify continuity
tor contacts:
between the
following connec
A13-J1-£
and
W35-P1-A
A13-J1-£
and
W35-P1-B
A13-J1-X
and
W35-P1-D
A13-J1-X
and
W35-P1-E
A13-Jl-a
and
W35-P1-G
A13-Jl-b
and
W35-P1-H
A13-Jl-d
and
W35-P1-K
A13-J1-6
and
W35-P1-L
A13-J1-£
and
W35-P1-N
A13-J1-1
and
W35-P1-P
A13-J1-Y
and
W35-P1-R
A-7
JSC-1^872
Date
Quality
Control
12. Verify that there is no continuity between the
following connector contacts:
W35-P1-A
and
W35-P1-D
§
n
W35-P1-B
and
W35-P1-E
§
D
W35-P1-G
and
W35-P1-K
§
L
W35-P1-H
and
W35-P1-L
5
K
W35-P1-N
and
W35-P1-R
W35-P1-P
and
W35-P1-R
2.4 VOLTAGE MEASUREMENTS
JSC-13872
Date
Quality
Control
1. Connect the Orbiter FM System console to the
Orbiter Power System or Auxiliary Power console.
Note which console is used.
2. Energize the power source.
3. At the FM Control panel, place the POWER switch
in the OFF position and measure the voltage at
contact A with respect to contact B at connector
P4 of cable W26. (0 ± .2 volts)
4. At the FM Control panel, place the POWER switch
in the 1 position and measure the voltage as
in step 3. (28 ± 2 volts)
5. At the FM Control panel, place the POWER switch
in the 2 position and measure the voltage as
in step 3. (28 ± 2 volts)
6. At the FM Control panel, place the POWTR switch
in the OFF position and measure the voltage at
contact L with respect to contact V at connec-
tor P6 of cable W26. (0 ± .2 volts)
7. At the FM Control panel, place the POWER switch
in the 1 position and measure the voltage as
in step 6. (28 ± 2 volts)
A-9
8 .
JSC- 13872
Date
Qua 1 i t y
Control
At the FM Control panel, place the POWER
switch in the 2 position and measure the
voltage as in step 6. (0 - *2 volts
9. At the FM Control panel, place the POWER
switch in the OFF position and measure the
voltage at contact L with respect to contact V
at connector P7 of cable W26. (0 ± .2 volts)
10. At the FM Control panel, place the POWER switch
in the 1 position and measure the voltage as
in step 9. (0 ± .2 volts)
11. At the FM Control panel, place the POWER
switch in the 2 position and measure the
voltage as in step 9. (28 t 2 volts)
12. Measure the voltage at contact A with respect
to contact D at connector PI of cable W35.
(24 J 2 volts)
13. Measure the voltage at contact B with respect
to contact E at connector PI of cable W35.
(24 1 2 volts)
Measure the voltage at contact C with respect
to contact K at connector PI of cable W35.
(5.0 t 0.2 volts)
14 .
JSC-13872
Date
Quality
Control
15. Measure the voltage at contact H with respect
to contact L at connector PI of cable W35.
(5.0 ± 0.2 volts)
16. Measure the voltage at contact N with respect
to contact R at connector PI of cable W35.
(+15 + 1 volts)
17. Measure the voltage at contact P with respect
to contact R at connector PI of cable W35.
(-15 ± 1 volts)
ORIGINAL PAGE IS
OF POOR QUAUT/i
A-11
2.5 CONTROL CIRCUITS
JSC-13872
Date
Qua I i ty
Control
1. Verify that there is 28 ± 2 volts at contact A
with respect to contact V of connector P6 of
cable W26 when TV is selected at the S-band FM
Control panel. Also verify that there is
0 ± .2 V for all other positions.
2. Repeat step 1 for connector P7 of cable W26.
3. Verify that there is 28 ± 2 volts at contact D
with respect to contact V of connector P6 of
cable W26 when PL ANLC is selected at the S-band
FM Control panel. Verify there is 0 ± .2 V for
all other positions.
4. Repeat step 3 for connector P7 of cable W26.
5. Verify that there is 28 ± 2 volts at contact E
with respect to contact V of connector P6 of
cable W26 when PL DIG is selected at the S-band
FM Control panel and there is 0 ± ,2V for all
other positions.
6. Repeat step 5 for connector P7 of cable W26.
7. Verify that there is 28 ± 2 volts at contact C
with respect to contact V of connector P6 of
cable W26 when PL RCDR is selected at the
S-band FM Control panel and there is 0 ± .2 V
for all other positions
8. Repeat step 7 for connector P7 of cable W26.
A-12
o
JSC-13872
Date
Quality
Control
9. Verify that there is 28 ± 2 volts at contact G
with respect to contact V of connector P6 of
cable W26 when ME is selected at the S-band FM
Control panel. Verify that there is 0 ± .2
volts for all other positions.
10. Repeat step 9 for connector P7 of cable W26.
11. Verify that there is 28 ± 2 volts of contact B
with respect to contact V of connector P6 of
cable W26 when OPS RCDR is selected at the
S-band FM Co.itrol panel and there is 0 ± .2
volts for all other positions.
12. Repeat step 11 for connector P7 of cable W26.
13. Verify that there is 28 ± 2 volts at contact F
with respect to contact V of connector P6 of
cable W26 when DOD is selected at the S-band
FM Control panel and there is 0 ± .2 volts for
all other positions.
14. Repeat step 13 for connector P7 of cable W26.
15. Place the POWER switch on the S-band FM Control
panel to OFF.
16. Place the ANT switch on the S-band FM Control
panel to GPC. Verify that there is continuity
between contacts 5 and 8 of connector All-Jl,
and between 6 and 38 of the same connector.
A- 13
0 )
17. Verify that there is no continuity between the
contacts in the following list.
5 and 6
5 and 7
5 and 9
6 and 37
6 and 39
18. Place the ANT switch on the S^band FM Control
panel in the UPPER position. Verify continuity
between contacts 5 and 7, and between 6 and 37
of All-Jl.
19. Place the ANT switch on the S-band FM Control
panel to the LOWER position. Verify continuity
between contacts 5 and 9, and between 6 and 39
of All-Jl.
JSC-13872
Date
Quality
Control
A-14
2.6 MONITOR CIRCUITS
JSC-13872
Date
Quality
Control
1. Place the POWER switch on the S-band FM Control
panel to the OFF position. Verify that the
XMTR DC POWER OFF indicator is illuminated, and
the XMTR DC POWER ON indicator is not illumi-
nated.
2. Verify that both of the SIG PROC PROCESSOR 1
ON indicators are not illuminated.
3. Verify that both elapsed time indicators are
not operating.
4. Place the POWER switch on the S-band FM Control
panel to the 1 position. Verify that the XMTR
DC POWER ON indicator is illuminated and the
XMTR DC POWER OFF indicator is not illuminated.
5. Verify that the SIG PROC PROCESSOR 1 ON indi-
cator is illuminated, and the SIG PROC
PROCESSOR 2 ON indicator is not illuminated.
6. Verify that both elapsed time indicators are
operating.
7. Place the POWER switch on the S-band FM Control
panel to the 2 position. Verify that the XMTR
DC POWER ON indicator is illuminated and the
XMTR DC POWER OFF indicator is not illuminated.
A- 15
JSC-13872
Date
Quality
Control
8. Verify that the SIG PROC PROCESSOR 2 ON
indicator is illuminated and the SIG PROC
PROCESSOR 1 ON indicator is not illuminated.
9. Verify that both elapsed time indicators are
operating.
10. Place the POWER switch on the S-band FM Control
panel in the OFF position.
11. Place the signal selector control on the
S-band FM Control panel to TV. Verify that
the TV monitor lamp is illuminated and that
the other signal selector monitor lamps are
not illuminated.
12. Place the signal selector to PL ANLG and
verify that the PL ANLG lamp is illuminated
and the others are not illuminated.
13. Place the signal selector to PL DIG and verify
that the PL DIG lamp is illuminated and the
others are not illuminated.
14. Place the signal selector to PL RCDR and
verify that the PL RCDR lamp is illuminated
and the others are not illuminated.
15. Place the signal selector to ME and verify
that the ME lamp is illuminated and the
others are not illuminated.
16. Place the signal selector to OFF and verify
that the OFF lamp is illuminated and the
others are not illuminated.
A-16
JSC-13872
Date
Quality
Control
17. Place the signal selector to OPS RCDR and
verify that the OPS RCDR lamp is illuminated
and the others are not illuminated.
18. Place the signal selector to DOD and verify
that DOD lamp is illuminated and the others
are not illuminated.
19. Connect contacts 24 and 25 of A11-J2 to the
28 volt return.
20. Connect contacts 18 and 19 of A11-J2 to the
+28 volt LRU power source.
21. Apply +28 volts (LRU power) to contact 20 of
A11-J2 and verify that the AUTO monitor lamp
on the S-band FM DISCRETE MONITOR FUNCTIONS
panel becomes illuminated and is not illumi-
nated when the voltage is removed.
22. Apply +28 volts (LRU power) to contact 21 of
A11-J2 and verify that the AUTO monitor lamp
becomes illuminated and is not illuminated
when the voltage is removed.
23. Apply +28 volts (LRU power) to contact 28 of
A11-J2 and verify that the MAN UPPER monitor
lamp becomes illuminated and is not illuminated
when the voltage is removed.
A-17
JSC-13872
Date
Quality
Control
24. Apply +28 volts (LRU power) to contact 29 of
A11-J2 and verify that the MAN UPPER monitor
lamp becomes illuminated and is not illuminated
when the voltage is removed.
25. Apply +28 volts (LRU power) to contact 26 of
A11-J2 and verify that the MAN LOWER monitor
lamp becomes illuminated and is not illuminated
when the voltage is removed.
26. Apply +28 volts (LRU power) to contact 27 of
A11-J2 and verify that the MAN LOWER monitor
lamp becomes illuminated and is not illuminated
when the voltage is removed.
27. Apply +28 volts (LRU power) to contact 23 of
A11-J2 and verify that the ANT SW S5A ON
monitor lamp becomes illuminated and is not
illuminated when the voltage is removed.
28. Apply +28 volts (LRU power) to contact 22 of
A11-J2 and verify that the ANT SW S5B ON
monitor lamp becomes illuminated and is not
illuminated when the voltage is removed.
29. Apply +28 volts (LRU power) to contact 31 of
A11-J2 and verify that the FM 1 ON monitor
lamp becomes illuminated and is not illuminated
when the voltage is removed.
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30. Apply +28 volts (LRU power) to contact 30 of
A11-J2 and verify that the FM 2 ON monitor
lamp becomes illuminated and is not illuminated
when the voltage is removed.
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2.7 SIGNAL DISTRIBUTION
1. Patch from VID DR-1 OUT to PROC TV IN. Insert
a 500 kHz (app) signal at 5.0 ± .2 V peak-to-
pea.k into VID DR-1 IN. Measure the output sig-
nal at W10-P2, contacts A and D with a differ-
ential oscilloscope. (10.0 ± 0.5 V P/P)
2. Remove the patch from VID DR-1 OUT and patch
from VID DR- 2 OUT to PROC TV IN. Insert a
500 kHz (app) signal at 5.0 ± .2 V peak-to-peak
into VID DR-2 IN. Measure the output signal at
W10-P2, contacts A and D with a differential
oscilloscope. (10.0 ± 0.5 V P/P)
3. Remove the patch used in step 2. Patch from
DYN AMP-1 OUT to PL ANLG IN. Insert a 500 kHz
(app) signal at 5.0 ± 0.2 V peak-to-peak into
DYN AMP-1 IN. Measure the output at W9-P2,
contacts A and D with a differential oscillo-
scope. (10.0 ± 0.5 V P/P)
4. Remove the patch used in step 3. Patch from
DYN AMP-2 OUT to PL ANLG IN. Insert a 500 kHz
(app) signal at 5.0 ± 0.2 V peak-to-peak into
DYN AMP- 2 IN. Measure the output at W9-P2,
contacts A and D with a differential oscillo-
scope. (10.0 ± 0.5 V P/P)
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ORIGINAL PAGE IS
OF P(x)R quality;
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5. Remove the patch used in step 4. Insert a
100 kHz (app) square wave signal at 4.0 ± 0.5 V
peak-to-peak into the patch panel MH-l input.
Measure the output at W36-P8, contacts K and L
with a differential oscilloscope. (7.0 ± 2.0 V
P/P)
6. Insert the 100 kHz signal into the patch
panel ME- 2 input and measure the output at
contacts R and P of W36-P8. (7.0 ± 2.0 V
P/P)
7. Insert the 100 kHz signal into patch panel
ME-3 input and measure the output at contacts
U and T of W36-P8. (7.0 ± 2.0 V P/P)
8. Insert the 100 kHz signal into patch panel
MS PB input and measure the output at contacts
D and E of W36-J8. (7.0 ± 2.0 V P/P)
9. Insert the 100 kHz signal into patch panel
01 PB input and measure the output at contacts
A and B of W36-J8. (7.0 ± 2.0 V P/P)
10. Insert the 100 kHz signal into patch panel
DOD input and measure the output at contacts
G and H of W36-J8. (7.0 ± 2.0 V P/P)
11. Insert the 100 kHz signal into patch panel PL
DIG input and measure the output at contacts
A and D of W36-P9. (7.0 ± 2.0 V P/P)
12. Insert the 100 kHz signal into patch panel
1024 #1 IN and measure the output at contacts
P and S of W26-P6. (7.0 ± 2.0 V P/P)
13. Insert the 100 kHz signal into patch panel
1024 #2 IN and measure the output at contacts
P and S of W26-P7. (7.0 ± 2.0 V P/P)
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2.8 COOLING AND TEMPERATURF,
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1. Connect the cold plate cooling water input and
output couplings to the Orbitcr Cooling System.
2. Record the pyrometer temperature.
3. Energize the Orbiter Cooling System and verify
coolant flow.
4. Verify that the temperature decreases at least
5 degrees. Record the temperature .
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