Harris SX-1 User manual

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TECHNICAL MANUAL
SX-1, SX-2.5, AND SX-5 AM TRANSMITTER
OPERATORS MANUAL
m HARRIS
T.M. No. 888-2125-002
C Copyright HARRIS CORPORATION
1983 All Rights Reserved
Printed : June 8, 1983

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REV. ff
002
MANUAL REVISION HISTORY
SX-1, SX-2.5, AND SX-5 AM TRANSMITTER OPERATORS MANUAL
888-2125-xxx
DATE ECN
06-08-83 27566
PAGES AFFECTED
Replace the following pages:
Title Page, SA-3, SA-4, A- 3, A- 4, A-5, and A- 6
Add the following page:
Manual Revision History page
888-2125-002

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WARNING
THE CURRENTS AND VOLTAGES IN THIS EQUIPMENT ARE
DANGEROUS. PERSONNEL MUST AT ALL TIMES OBSERVE
SAFETY REGULATIONS.
This manual is intended as a general guide for trained and qualified personnel
who are aware of the dangers inherent 1n handling potentially hazardous
electrical/electronic circuits. It is not intended to contain a complete
statement of all safety precautions which should be observed by personnel in
using this or othe r electronic equipment.
The installation, operation, maintenance and service of ' this equipment
involves risks both to personnel and equipment, and must be performed only by
qualified personnel exercising due car e. HARRIS CORPORATION shall not be
responsible for injury or damage resulting from improper procedures or from
the use of improperly trained or inexperienced personnel performing such task s .
During installation and operation of this equipment, local building codes and
fire protection standards must be observed. The following National Fire
Protection Association (NFPA) standards are recommended as references :
Automatic Fire Detectors, No. 72E
Installation, Maintenance, and Use of Portable Fire Extinguishers,
No. 10
Halogenated Fire Extinguishing Agent Systems, No. 12A
WARNING
ALWAYS DISCONNECT POWER BEFORE OPENING COVERS,
DOORS, ENCLOSURES, GATES, PANELS OR SHIELDS.
ALWAYS USE GROUNDING STICKS AND SHORT OUT HIGH
VOLTAGE POINTS BEFORE SERVICING. NEVER
INTERNAL ADJUSTMENTS, PERFORM MAINTENANCE
SERVICE WHEN ALONE OR WHEN FATIGUED.
MAKE
OR
Do not remove, short - circuit or tamper with interlock switches
covers, doors, enclosures, gates, panels or shields. Keep away
circuits, know your equipment and don't take chances.
WARNING
IN CASE OF EMERGENCY ENSURE THAT POWER HAS BEEN
DISCONNECTED.
888-2125-001
on acc es s
from live
1

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Treatment of Electrical Shock
1.1.
1. If victim is not responsive follow the A-B-Cs of basic life support.
PLACE VICTIM FLAT ON HIS BACK ON A HARD SURFACE
® AIRWAY
IF UNCONSCIOUS,
OPEN AIRWAY
LI FT UP NECK
PUSH FOREHEAD BACK
CLEAR OUT MOUTH IF NECESSARY
OBSERVE FOR BREATHING
CHECK CAROTID PULSE
IF PULSE ABSENT,
BEGIN ARTIFICIAL
CIRCULATION
® CIRCULATION
® BREATHING
IF NOT BREATHING,
BEGIN ARTIFICIAL
BREATHING
TILT HEAD
PINCH NOSTRILS
MAKE AIRTIGHT SEAL
4 QUICK FULL BREATHS
REMEMBER MOUTH TO MOUTH RESUSC ITATION
MUST BE COMMENCED AS SOON AS POSSIBLE
DEPRESS STERNUM 1 l/2"TO 2"
{
ONE RESCUER
APPROX. 15 COMPRESSIONS
SO SEC. 2 QUICK BREATHS
{
TWO RESCUERS
APPROX. 5 COMPRESSIONS
bO SEC . 1 BREA TH
NO T E: DO NOT INTERRUPT RHYTHM OF COMPRESSIONS
WHEN SECOND PERSON IS GIVING BREATH
Call for medical assistance as soon as possible,
2. If victim is responsive.
a.
b.
C •
keep them warm
keep them as quiet as possible
loosen their clothing
(a reclining position is recommended)
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FIRST-AID
Personnel engaged in the installation, operation, maintenance or servicing of
this equipment are urged to become familiar with first-aid theory and
practices. The following information is not intended to be complete first-aid
procedures, it is brief and is only to be used as a reference. It is the duty
of all personnel using the equipment to be prepared to give adequate Emergency
First Aid and thereby prevent avoidable loss of life .
Treatment of Electrical Burns
1. Extensiv e burned and broken skin
a. Cover ar ea with clean sheet or cloth.
article,)
(Cleanest available cloth
b. Do not break blisters, remove tissue, remove adhered particles of
clothing, or apply any salve or ointment .
c. Treat victim for shock as required.
d. Arrange transportation to a hospital as quickly as possible.
e . If arms or legs are affected keep them elevated.
NOTE
If medical help will not be available within an
hour and the victim is conscious and not
vomiting, giv e him a we ak solut i on of salt and
soda: 1 level teaspoonful of salt and 1/2
level teaspoonful of baking soda to each quart
of water (neither hot or cold). Allow victim
to sip slowly about 4 ounces (a half of glass)
over a period of 15 minutes , Discontinue fluid
if vomiting occurs. (Do not give alcohol . )
2.
Less severe burns - (1st & 2nd degr ee )
a. Apply cool (not ice cold) compresses using the cleanest available
cloth article.
b. Do not break blisters, remove tissue, remove adher ed parti_cle s of
clothing, or apply salve or ointment.
c, Apply clean dry dressing if necessary.
d. Treat victim for shock as required.
e, Arrange transportation to a hospital as quickl y as possibl e.
f .
If arms or l e gs ar e affected k ee p t hem elevated.
RE F ERENCE: ILLINOIS HEART ASSOCIATION
AMERICAN RED CROSS STANDARD FIRST AID AND PERSONAL SAFETY MANUAL
( SECOND EDITION)
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SECTION I
OPERATION
1-1 . INTRODUCTION
1-2. The information contained in this section is intended to familiariz e
the operator with the preoperational setup and the operating procedures for
the transmitter, A thorough . study of the controls and indicators is recom-
mended prior to turn-on and operation. This section also contains tabular
data on the function of each control and indicator with reference illustra-
tions showing their location.
1-3. The preoperational checkout and setup, operati ng procedures for turn-
on and turn-off, and emergency procedures are described.
1-4. PERSONNEL PROTECTION
1-5. Extensive interlocking and safety switches have been provided on
these transmitters because of the low impedance high current capabilities of
the power supplies. The access doors to th e transmitters are provided with
three safety switches. The first safety switch is operated by a small pin
protruding through a hole and, upon opening the door, interrupts the co ntrol
voltage to the prima ry contactors allowing them to deenergize. Upon opening
the door further, a large switch with heavy silver contacts is provided t o
discharge the energy storage capacitors through large resistors for current
limiting. Upon opening the door further a switch operated also by the door
shorts the power supply to the cabinet eliminating any possible voltage re-
maining on the filter capacitors.
WARNING
I
THE NORMAL PROCEDURE IN TRANSMIT-
TER TURN OFF SHOULD BE FOLLOWED IN
DEENERGIZING THIS
TRANSMITTER.
TURN OFF THE HIGH VOLTAGE BY DE-
PRESSING
THE OFF BUTTON. IF YOU
MUST ENTER THE TRANSMITTER, ALLOW
THE POWER SUPPLY TO DISCHARGE AS
INDICATED BY THE FRONT PANEL
METERS . DISCONNECT PRIMARY POWER
SERVICE. OPEN THE DOOR SLOWLY TO
ALLOW THE INITIAL RESISTOR DIS-
CHARGE MECHANISM TO FUNCTION. UP-
ON OPENING THE DOOR FURTHER THE
POWER SUPPLY WILL BE SHORTED TO
GROUND AND MADE SAFE. A GROUNDING
STICK IS PROVIDED IN THE TRANSMIT-
T
ER AND SHOULD BE USED TO ASSURE
THAT ALL VOLTAGE HAS BEEN REMOVED
UNDER FAULT CONDITIONS.
888-2125-001
WARNING: Disconnect primary power prior to servicing.
1-1

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1-6. If the preceeding warning is not heeded, substantial damage may be
done to circuit card foil, grounding switches, and the capacitors them -
selves. Always allow the voltage to be discharged prior to opening the
door. If immediate access is an absolute necessity it is recommended that
the high voltage be turned off, the door be opened approximately 2 inches
and be allowed to remain 1n this position for 2 seconds before opening
further. The main high voltage filter capacitor bank is mounted on the door
with resistors directly across the terminals of each capacitor to provide
slow discharge of a capacitor in case the circuit board foil should open
under fault conditions. In addition to this capacitor bank there is capaci-
tance at the rectifier terminals themselves to provide transient protection
in case of over voltage. Additional filter capacitance is connected direct-
ly to each PDM amplifier to remove high frequency transients from the high
voltage bus directly at the source of the high frequency energy.
1- 7, CONTROLS AND INDICATORS
1- 8. Figures 1-1 thru 1-6 show the controls and indicators available from
the exterior of the transmitter with the function for each control or indi-
cator given in tables 1-1 thru 1- 6.
1- 2 888-2125 -001
WARNING: Disconnect primary power prior to servicing.

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888-2125-001
1-3
WARNING: Disconnect primary power prior to servicing.

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Figure
1-1.
Meter
Panel
Controls
and
Indicators
) ) )

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REF.
1
2
3
4
5
6
Table 1-1. Meter Panel Controls and Indicators
CONTROL/INDICATOR FUNCTION
PA VOLTAGE meter Indicates voltage being applied across
one of the final power am pl if i ers.
PA CURRENT meter
POWER meter
LOW, pushbutton
MEDIUM, pushbutton
HIGH, pushbutton
Indicates the current being input to
all of the final power amplifiers.
Indicates switch selected forward or
reflected power out of the transmitter
as monitored at the position of the
directional coupler 1 0 the output
network.
When depressed, commands the transmit-
ter to change to the power level as-
signed to that control by the micro-
processor. If FAULT lamp illuminated,
depressing LOW pushbutton will extin-
guish FAULT lamp and bring transmitter
back to LOW power setting . It 1s as -
sumed
that the cause of the or i ginal
fault condition has been removed.
When depressed, commands the transmit-
ter to change to th e power level as-
signed to that control by the micro-
processor . If FAULT lamp illuminated,
depressing MEDIUM pushb utto n wi 11 ex-
tinguish FAULT lamp and bring trans -
mitter back to MEDIUM power setting.
It 1s assumed that the ca us e of the
original fault condition has been
removed.
Hhen depressed, commands the transm i t-
ter to change to the power level as -
signe d to that control by the micro -
processor. If FAULT lamp ts i llu mi-
nated, depress in g HIGH pushbutton will
extinguish FAULT la mp and bring trans -
mitt er back to HIGH pow er setting. It
1s assumed that the c aus e of the orig-
inal fault condition ha s been removed .
888-2125-001
1- 5
WARNING: Disconnect primary power prior to serviciny.

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REF.
7
8
9
10
Table
1-1.
Meter
Panel
Controls
and
Indicators
(Continued)
CONTROL/INDICATOR
FUNCTION
OFF/FAULT,
control,
Us
ed
to
turn
the
transmitter
off
and
indicator
also
indicates,
when
illuminated,
that
a
fault
has
occ
urr
ed.
To
cl
ear
th
e
fault
condition,
depress
either
the
OFF/FAULT,
LOW,
MEDIUM,
or
HIGH
push-
buttons
and
the
illumination
will
be
extinguished.
RAISE,
pushbutton
LOWER,
pushbutton
PO
!vER,
swi
tch
FWD
When
depressed,
microprocessor
will
acknowledge
the
action
by
illumi
na
tin
g
the
pushbutton
and
will
simultaneously
begin
raising
the
output
power
level
of
the
transmitter.
The
action
t s
slow,
so
the
pushbutton
will
have
to
be
depressed
for
a
per
iod
of
ti.me
to
see
any
act
ion.
When
depressed,
microprocessor
will
acknowledge
th
e
action
by
illuminatin
g
the
pushbutton
and
will
simultaneously
begin
l
ower
in
g
the
output
power
!eve
1
of
the
transmitter.
Th
e
action
is
slow,
so
the
pushbutton
will
have
t o
be
depressed
for
a
period
of
time
to
see
any
action.
Two
position
switch
that
parameters,
as
listed
below,
will
be
displayed
on
POWER
meter
selects
which
MJ.
!vhen
the
PO\vER
switch
ti.on,
forward
power
POWER
meter
MJ.
1s
tn
this
pos1.-
1s
indicated
on
REFLD
When
the
POWER
switch
ts
in
thi
s
posi-
tion,
reflected
power
i s
indicated
on
POWER
meter
M3.
1-6
888-2125-001
WARNING:
Disconnect
prim
ary
power
prior
to
servicing.

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888-2125-001
1-7
WARNING: Dis co nne c t primary po we r prior to ;5ervicing.

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Figure
1-2.
Loading
and
Tuning
Controls
) )

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Table 1-2. Loading and Tuning Controls
REF. CONTROL/INDICATOR FUNCTION
1
LOADING, control
Refer to Maintenance Manual for adjust-
ment procedure.
THIS
CONTROL SHOULD
NOT BE ADJUSTED BY AN
INEXPERIENCED
OPERATOR.
2
TUNING,
control
Refer to Maintenance Manual for adjust-
ment
procedure. THIS CONTROL
SHOULD
NOT BE
ADJUSTED
BY AN INEXPERIENCED
OPERATOR.
888-21 2 5-001
1- 9
WARNING: Disconn e ct primary po we r prior to servicing.

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2125-3
Figure 1-3. Keybo ard and Display Controls and Indicators
1-10 888-2125-001
WARNIN G: Disconnect primary power prior to serv icing.

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REF.
l
2
Table 1-3. Keyboard and Display Controls and Indicators
CONTROL/INDICATOR
D isplay
Keyboard
1
2
3
4
FUNCTION
NOTE
See Supplement A at rear of this
manual for keypad code descriptions.
Sixteen digit display divided into two
distinct digital readouts to display
data points as selected by the key-
board. Two digit code for particular
data point will be displayed beside
KEY * or Kl<:Y :/f depending upon which
disp la y is selected, Data will be
displayed immediately below display
selected (KEY* or KEY#).
Twelve key keypad
defined as follows:
with each key
Us ed as input when the di.git 1 1s
required and also used as the data
point code n umber increment command
key for the KEY~ display. Microproc-
essor can distinguish between uses by
its location 1n command structure.
Used as input when the digit 2 LS
required.
Used as input when digit 3 is required
and a l so used as the data point code
number increment command key for the
KEY :/f di.splay. Microprocessor can
distinguish between uses by its
lo cation in command structure.
Used as input when the digit 4 1s
required .
888-2125-001
1- ll
WARNING: Disconnect primary power prior to servic ing.

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REF.
Table 1-3. Keyboard and Display Controls and Indicators
(Continued)
CONTROL/INDICATOR
5
6
7
8
9
*
41
FUNCTION
Used as input when the
digit
5
1-S
required.
Used
as
input
when the digit 6
lS
required.
Used as input when digit 7 1s required
and also used as the data point code
number decrement co mmand key for the
KEY * display. Microprocessor can
distinguish between uses by its loca -
tion in command structure.
Used as input when the digit 8 1s
required.
Used as input when digit 9 1s required
and also used as the data point code
numb e r decrem e nt command key for the
KEY # display. Microprocessor can
distinguish between uses by its lo c a-
tion 1n command structure.
Used to selec t KEY * display oo
display panel (upper display).
Used to select KEY if display on
display panel (lower display).
EXAMPLE S:
To read temperature of module Al de-
press*, depress 1, and then depress 1
(or #11 to display on# readout).
Display w ill read *11
66 w her e 66 1s
temperature reading for m odu l e Al.
To read IPA Drive Level depress #10
(or *10 to display on* readout).
Display wi ll read #10
154 where 154 1s the
reading for IPA Drive Level.
1-12 888-2125-001
WARNING: Disconnect primary power prior to servicing.
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