Hal Communications ST-8000A User manual

Technical Order No. 3LR2-4-L924-l
ST-8OOOA FSK MODEM
OPERATOR'S MANUAL
Copyright O 1991 by HAL Communications Corp., Urbana, IIIinois.
Printed in the United States of America. Contents of this
publication may not be reproduced in any form without the written
permission of the copyright owner.
87 0-08 005
April L6, l-991 Printing

LIST OF EFFECTIVE PAGES
Date of issue for
Original. .0. .
Revision. . L. .
Revision . .2. .
TO NO. 3t_R2-4-LO24-L
original is:
26 Feb 9L
L8 Mar 9L
L6 Apr 9L
TOTAL NUMBER OF PAGES IN THIS PUBLTCATION ISI, L2O
CONSISTTNG OF:
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vii & viii 2
1-1, 1-3, & 1-g 0
L-2 & 1-4 to L-7 ...... l-
2-L 2
2-6, 2-L2, 2-15, 2-L7 , &. 2-L9 L
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2-13 to 2-L4, 2-L6, & 2-l-8 ...... 0
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4-L, 4-2, &. 4-4 to 4-L6 0
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No.
AUSAF

ST-8OOOA FSK MODEM
OPERATOR'S MANUAL
TABLE OF CONTENTS:
CHAPTER 1 INTRODUCTION
]-. 1 PURPOSE l--L
t_-t_
L-l-
l-2
1-2
L-3
L-4
1,-4
t-5
L-6
L-7
]--7
L-7
2-L
2-L
2-L
2-3
2-4
2-4
2-6
2-6
2-6
2-7
2-8
2-9
2-LL
2-L2
2-L3
2-L3
2-L4
2-L5
2-L6
2-L8
2-L9
2-L9
L.2
1.3 GENERAL DESCRIPTION
SPECIFTCATIONS
1.3 . l- Demodulator
L.3.2 Modulator
l-.3.3 Modem Control
L. 3 .4 Front Panel
1.3.5 Remote Control
L.3.6 Rear Panel Connections
1,.3.7 Other Rear Panel Devices
1.3.8 Physical Data
L.3.9 Compatibility
CHAPTER 2INSTALLATION
GENERAL
UNPACKING AND INSPECTION
2.2.1 Unpacking
2.2.2 St-8000A Accessories
POWER REQUIREMENTS
2.3.L Voltage and Frequency
2.3.2 AC Power Cord
2.3.2.L
2.3 .2.2
2.3.2.3
RACK MOUNTING
USER-SET OPTION SWITCHES AND JUMPERS
2.5.1 Demodulator Input Impedance
2.5.2 Automatic Mark HoId (AMH) Settings
2.5.3 Demodulator LOS / Carrier Detect (CD)
2.5.4 Modulator Tone Auto-Mute Setting
2.5.5 Remote Control Data Rate
2.5.6 Remote Control Address
2.5.7 Auto-Mute Delay
2.5.8 RS-232 / ylTL-L98 Data Format
2.5.9 Remote Control Terminations
2 . 5. l-0 Log Option Settings
2.L
2.2
2.3
2.4
2.5
United States AC Power Connection
Host Nation AC Power Connection
Military AC Power Connection
HAL9 104 16 870-08005

ST-8OOOA OPERATOR'S MANUAL
TABLE OF CONTENTS (Continued):
2.6 CABLE CONNECTIONS
2 .6.L Audio t/o
2.6.1.L
2 .6.2
2 .6.3
ons
tem Connections
Modulator FSK Audio Output
Keyline Connections
Demodulator FSK Audio Input
Connecti
Radio Sys
2.6.),.1.1
2.6.L.L.2
2.6.L. L. 3
2-2L
2-2L
2-22
2-22
2-22
2-22
2-25
2-28
2-30
2-33
2-36
3-t
3-L
3-1
3 -l_
3-t
3-3
3-5
3-5
3-5
3-5
3-6
3-6
3-7
3-7
3-8
3-8
3-8
3-9
3-9
3-9
3-L0
3-t-0
3 -10
3-LL
3-t_t
3-t L
3-Ll_
3-L2
3-L2
3-L2
3-L2
3-L2
3 -L3
3-1 3
3-14
3-t 4
3-14
3 -L4
2.6.1.2 4-Wire Line Connections
2.6.1.3 2-Wire Line Connections
Data Terminal Connections
Remote Control Terminal Connections
2.7 FACTORY DEFAULT SETTTNGS
CHAPTER 3 OPERATION
3.1_ Start-Up
Local Operation
Emergency Operation
Power-Down
FRONT PANEL
ENTRY
Number Keys
ENTER Key
3.2
3.3
GENERAL
3.L.L
3.1.2
3.1.3
3.1.4
sT-8 0 00
KEYPAD
3.3.1
3 .3.2
3.3.3
3.3.4
3.3.5
3.3.6
3.3.7
3.3.8
3.3.9
3.3. L0
3.3.11
3.3. L2
3.3.13
3.3.14
3.3.15
3.3. L6
3.3.17
N Key
SYNCH
REGEN
lul/ s CENT
BIT Key
3.3.4.1-
3.3.4.2
2ND Key
FSK Key
DIV Key
Internal BIT
Key
Internal Options
MARK ONLY Key
3.3.7. L MARK
3.3.7 .2 MARK
SPACE ONLY Key
3.3.8. t_ SPACE
3.3.8.2 SPACE
(first level)
ONLY (2nd level)
(first level)
oNLY (2nd ldvet)
NOR REV Key
AllH HOLD Key
3.3. L2. t- AMH
3.3.L2.2 HOLD
MUTE Key
REMOTE Key
3.3. 13. 1
3.3. 13.2
SYNCH REGE
3.3.14.1"
3.3.L4.2
CHAN Key
3.3. t-5. l_
3.3. 15.2
BAUD RATE
CLEAR Key
(first Ieve1)
(2nd level)
NORM (first level)
REV (2nd level)
( f irst ).evel )
(2nd level)
CHAN
CHAN
Key
first level)
2nd level)
HAL9l_0416 11 87 0-08 005

ST.SOOOA OPERATOR'S MANUAL
TABLE OF CONTENTS (Continued)
3.4
3.5
3.6
3"7
3.8
4.1
4.2
4.3
4.4
R
.6
-'7
R1
5.2
5.3
4.7.2.
4.7 .2.
NUMERICAL DISPI.,AYS
MODE INDICATORS 3 -l_5
3-15
3-t7
3-L7
3-L7
3-L7
3 -l_8
3-19
3-l-9
4-1,
4-l_
4-t
4-2
4-3
4-5
4-5
4-6
4-7
4-7
4-8
4-10
4-LL
4-L2
4 -1"3
4-15
4-]-6
4-1,6
4-15
4-L6
4 -16
4-L6
4 -l_6
5-L
5-1
5-t-
5-2
5-2
5-4
5-7
5-9
5-1 1
5- 13
5-1 3
BAR INDICATORS
MODUI,ATOR OUTPUT
CONTROL COMMANDS
STATUS RESPONSES
LEVEL
OPERATIONAL MODES
3.8 " L Start-Up
3.8.2 Local Operation
3.8.3 Standby Mode
3.8.4 Emergency Operation
CHAPTER 4 REMOTE CONTROL
ST-8OOOA REMOTE CONTROL
4.L.1 Remote Control
4.1.2 Unit Addressing
REMOTE CONTROL PROTOCOL
SET.UP
Data Rate
4.4.1 Long Format
4.4.2 Long Format
4.4.3 Short Format
4.4.4 Short Format
4.4.5 Other Status
4.4.6 HELP Page 1
4-4.7 HELP Page 2
4.4.8 HELP PaEe 3
Examples
Examples
Responses
4
4
4
INTERNAL BIT
4.7 .2
ERROR MESSAGES
OPERATING PROCEDURES
4.7 .1 Local Operation
4.7 .I.L Standby Operation
4.7 .L.2 Shut-Down
Remote Operation
1
2Start-Up Standby operation
CHAPTER 5 THEORY OF OPERATION
GENERAL
FSK SYSTEM APPLIC
5.2.1 Radio FSK
5.2.2 Wire Li-ne
FUNCTIONAL DESCRI
5. 3. 1 Demodulat
5. 3.2 Modulator
Data System
ATION
Data
FSK
PTION
System
or Circuits
and Keyline circuits
5.3.3
5.3 .4
5.3.5 Digital Control Circuitry
Front Panel
Power Supply
5.3 .6 Cabinet
HAL910416 r11 87 0-08 005

ST-8OOOA OPERATOR'S MANUAL
TABLE OF CONTENTS (Continued):
CHAPTER 5 MAINTENANCE
6. ]- GENERAL
6.2 DEPOT MAINTENANCE
6. 3 ROUTINE MAINTENANCE
6.4
6.5
APPENDIX
APPENDIX
6.5.1 Purpose
POWER-ON SYSTEM TEST
BUrLT-IN-TESTS (BrT) (Posr)
(Test
6)
7)
8)
e)
A)
6-t
6-L
6-2
6-2
6-3
6-3
6-3
6-4
6-4
6-5
5-5
6-5
6-7
6-7
5-7
6-7
5-8
6-8
6-8
6-9
6-9
6-t_0
6-t-0
6-t t
6-t l_
6-t2
6-L2
6-L2
5- 13
6-L4
6-14
6-L5
A-1
B-1
6.5.2
5.5.3
6.5.4
6. 5.4 .8
6.5.4.9
6.5.5 BIT Executi
6.5.6 Manual Test
6.6 ADDITIONAL FAULT ID
6.7 RETURN TO FACTORY
APPENDICIES
BIT Activation
6.5.2.L BIT Entry via Front Panel Keypad
6.5.2.2 BIT Entry via Remote Control Commands
BIT Test ResuLt fndications
6. 5. 3 . 1 BIT Step Successful
6.5.3.2 BIT Step Failure
ST-8000A BIT Steps
6.5.4. l- Microprocessor Alive test
6.5.4.2 Internal Clock Test (Test
6 .5 . 4 .3 ROM Checksurn Test (Test 2)
(Test 0)
r.)
6.5.4.4 Random Access Memory Test (Test 3)
6.5.4.s EEPROM Test (Test 4)
6.5.4.6 Front Panel- Indicator Test
6.5.4.7 Loopback Data Test #f (Test s)
5.5.4. 10 Loopback Data Test #q (Test
6.5.4.11 Loopback Data Test #S (Test
6.5.4.L2 Remote Port Test (Test B)
6. 5.4 . l-3 Deadman Timer Test (Test C)
6.5.4.L4 Final BIT Report
6.5.4. 15 Restore Parameters
Loopback Data Test #Z (Test
Loopback Data Test #: (Test
on Times
Selection
ENTIFICATION
A,
B,
FCC PART 15 VERIFICATION
WARRANTY
HAL9 104 15 1V 87 0-08 005

TABLES:
TABLE 2
TABLE 2
TABLE 2
TABLE 2
TABLE 2
TABLE
TABLE
TABLE
TABLE
TABLE
TABLE
TABLE
TABLE
TABLE
TABLE
TABLE
TABLE
TABLE
TABLE
l_
2
3
4
5
ST-8OOOA OPERATOR'S MANUAL
ST-8OOO ACCESSORIES
INTERNAL OPTION LOG
AUDIO I/O CONNECTOR J2
DATA r/O CONNECTOR JL
REMOTE CONTROL CONNECTOR J4
BIT ROUTINES
DISPLAY OF INTERNAL OPTIONS
REMOTE CONTROL DATA RATE SET-UP
REMOTE CONTROL ADDRESS SET-UP
ST-8OOOA REMOTE CONTROL COMMANDS
LONG COMMAND FORMAT
SHORT COMMAND FORMAT
G COMMAND RESPONSES
HELP PAGE 1
HELP PAGE 2
HELP PAGE 3
BIT T1 RESPONSE
REMOTE COMMAND ERROR RESPONSES
BIT STEP EXECUTION TIMES
ST-8OOOA MODEM
ST-8OOOA PACKAGING
ST-8OOOA REAR PANELFOR SHTPMENT
MILITARY AC POWER ADAPTER CABLE
USER-SET OPTION SWITCHES AND JUMPERS
DEMODULATOR INPUT IMPEDANCE (A1J6)
AMH THRESHOLD AND DELAY (AtSWl-, A1SW2)
LOSICD JUMPER (A1J9)
AUTO-MUTE JUMPER (Ar-J8) - ..
REMOTE CONTROL DATA RATE (A2SW3)
REMOTE CONTROL ADDRESS (A2SW4)
AUTO-MUTE DELAY (A2SW1, A2SW2)
RS-232 / lfiL-]-g8 JUMPERS (A2J2, A2J6, A2J7 ) ...
REMOTE CONTROL TERMTNATIONS (AzJ4 AND A2J8) ....
TYPICAL RADIO DATA SYSTEM
RADIO SYSTEM CONNECTIONS
TYPICAL FDX WIRE-LINE SYSTEM
4.WIRE LINE CONNECTTONS
2-WIRE LINE CONNECTIONS
DATA r/O CONNECTTONS
REMOTE CONTROL CONNECTIONS
ALTERNATE REMOTE CONTROL CONNECTIONS
MULTI-UNIT REMOTE CONTROL CONNECTION
2-3
2-20
2-2L
2-30
2-33
3-6
3-7
4-L
4-2
4-3
4-5
4-7
4-8
4-l_0
4-Lt_
4-t2
4 -13
4-15
6- t-3
vl11
2-2
2-5
2-7
2-10
2-LT
2-]-2
2-L3
2-L3
2-L4
2-L5
2-L7
2-18
2-t9
2-23
2-24
2-26
2-27
2-29
2-32
2-34
2-35
2-37
3
3l-
2
1
2
3
4
5
6
7
I
9
10
11
4
4
4
4
4
4
4
4
4
4
4
6
FIGURES
FIGURE ]-. 1
FIGURE 2.L
FIGURE 2.2
FIGURE 2.3
FIGURE 2.4
FTGURE 2.5
FTGURE 2.6
FIGURE 2.7
FIGURE 2.8
FIGURE 2.9
FIGURE 2.LO
FTGURE 2.LL
FIGURE 2.12
FIGURE 2.T3
FIGURE 2.14
FIGURE 2.15
FIGURE 2.16
FTGURE 2.I7
FTGURE 2.18
FIGURE 2.L9
FIGURE 2.20
FIGURE 2.27
FIGURE 2.22
HAL910416 87 0-08 005

ST-8OOOA OPERATOR'S MANUAL
FIGURES (Continued):
FIGURE 3. ].
FIGURE 3.2
FIGURE 3.3
ST.SOOOA FRONT PANEL
ST-8OOOA FRONT PANEL
ST-8OOOA FRONT PANEL KEYPAD
DISPI,AYS
3-2
3-4
3-16
5-3
5-6
5-8
5-1 0
5-L2
FIGURE
FIGURE
FIGURE
FIGURE
FIGURE
5.1
5.2
5.3
5.4
5.5
ST-8OOOA INTERNAL ASSEMBLIES
DEMODUI,ATOR CIRCUIT
MODULATOR CIRCUIT
R CONTROL
MICROPROCESSO
FRONT PANEL
HAL9 104 16 vl 87 0-08 005

ST-8OOOA OPERATOR'S UANUAL
THIS PAGE LEFT BI,ANK INTENTIONALLY
HAL9 104 16 v].1 870-08005

ST-8OOOA OPERATOR'S MANUAL
ST-8OOOA MODEM
r:""^ 0
U O OU
0000
0000
0000
000
o oo
000
ooo
0 00
o oo
ooo
ooo
000
o ooo
00 oo0
000 000
00s0 000
0000 000
0000 000
0000000
0 ooo0O0
aa
; s u lira a
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l'l
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HAL91041_6
FIGURE 1.1 v].tr 8 7 0-08 005

ST.SOOOA FSK MODEM
OPERATOR'S MANUAL
CHAPTER ]-
INTRODUCTION
1.1 PURPOSE
The purpose of this manual is to provide operating and field
mai-ntenance instructi-ons for the Model ST-8OOOA Modem. Individual
chapters describe installation, operation, remote control, theory
of operation, and field maintenance.
L.2 GENERAL DESCRIPTION
The ST-8000A is a modulator-demodulator (MODEM) device that is an
interface between digitat data signals and radio or wire-line
transmission systems. The modulator section of the ST-80OOA
converts digital data pulses into audio tones. The frequency of
the output tone is shifted according to the MARK or SPACE state of
the data pulses. The Modulator FSK output signal is used to drive
data transmission Iines or as an audio input to a radio
transmitter. The ST-B0OOA demodulator section converts FSK audio
tone data j-nto digital pulses that are then used to drive a data
terminal devj-ce. The ST-8000A FSK MODEM is shown in Figure 1.1.
Modulator and demodulator parameters of the ST-8000A are set by
front panel keypad entry or by using rernote control commands issued
by a computer or controlling data terminal. Microprocessor control
circuitry within the ST-8000A interprets these user inputs and
generates the required control signals to the modulator and
demodulator sections of the modem. The modem may be operated in
either rrfuI1-duplexrr ( FDX) or rrhal f -duplex'r (HDX) modes.
The ST-8000A front panel includes a 27-key keypad for parameter
entry, numerical digital displays, and LED mode indicators. The
MARK, SPACE, and CENTER frequencies are displayed to 0.5 Hz
resolution and may be set in 0.5 Hz increments from 300 to 3000 Hz.
Baud rate is displayed to 1. O baud resolution and may be set in 1.0
baud increments over the range of 30 to 1200 baud. LED indicators
show currently selected operating modes. Two 2O-segment Bar Graph
displays show the amplitude of the MARK and SPACE signals of both
the modulator output and demodulator input audio signals.
The ST-8000A remote control input port may be used with either an
RS-232 or MIL-188 compatible terminal or computer at data rates
from 110 to 38,400 baud. Remote control commands include HELP
messages and summary output features.
HAL9 104 16 ST-8OOOA OPERATOR'S MANUAL 87 0-08005

INTRODUCTION PAGE 1,-2
The ST-8OOOA is housed in a rack-mountable aluminum cabinet. The
cabinet is 3.5 inches high by l-9 inches wide by L8 inches deep.
The FSK Modem may be operated from power line sources of l-L5 VAc
+10? or 23o vAc +10? at frequencies from 47 to 44o Hz. The modem
requires a total of 30 Watts of AC power.
fhe ST-8000A meets U.S.A., German, and United Kingdom (Host Nation)
approval for Safety, Telecornmunications, and RFI suppression. The
design Mean-Tirne-Between-Failure (MTBF) of the ST-8b-ooA is greater
than 30,000 hours. The sr-Boo0A may be operated over the
temperature range of 0 to 50 degrees c, up to g5z humidity (non-
condensing), and up to LO,OOO ft. elevation.
].. 3 SPECTFICATIONS
L.3.1 Demodulator
Input fmpedance:
Input Level:
Data Rate:
Frequency:
Frequencies Set:
shift: 30 to 27OO Hz, 30 to 600 baud, 1 Hz incr. 850
to l-200 Hz, 601 to l-200 baud, L Hz incr.
Filter Bandwidth: 16 MARK and l-6 SPACE bandwidths automatically
selected according to data rate selected.
600 ohm or 10 r 000 ohn, +10U, Bdlanced;
impedance set by internal jumper option.
-45 dBm to +6 dBm into 600 ohm.
30 to 1200 baud, in l-.0 baud increments.
300 to 3000 Hz, in 0.5 Hz increments.
MARK and SPACE or CENTER and SHIFT.
MARK OnIy, SPACE On1y, or MARK/SPACE (M/S)
differential detection.
Automatic MARK HoId (AMH) returns output RXD to
MARK state when signal is not present (LOS).
AMH Threshold = -42 to 0 dBm, 6 dB incr. AMH
Delay : 1.0 to 5.0 seconds, 0.5 sec. incr. AMH
Threshold & DeIay set via internal option
switch.
Two separate demodulators and detectors;
Low-Speed : 30 to 600 baud;
High-Speed = 601 to L2OO baud.
Automatically selected according to data rate.
RS-232C (MARK = -V) and MIL-188 (MARK : +V) on
separate output pins.
SelectabLe NORMAL or REVERSE.
Detection:
Auto Mark HoId:
LowlHigh Speed:
Receive Data Out:
Data Sense:
HAL910416 ST-8OOOA OPERATOR'S MANUAL 87 0-08 005

INTRODUCTION
Carrier Detect:
Receive Clock:
Synchronous Mode:
Asynchronous Mode:
BIT Loop-back:
Diversity Option:
L.3.2 Modulator
Output Impedance:
Output Level:
Data Rate:
Modulation:
Harmonics:
Spurious Signals:
Frequency:
shifr:
Frequencies Set:
TXD Mute:
PAGE 1-3
RS-232/I'41L-L88 output; LOS = -V or *V, set via
internal option jumper.
RS-232 Mid-Bit Regenerated C1ock, 30 to l-2OO
baud. Synchronizer tracking range of +58 of
selected baud rate.
RS-232 and MIL-L88, 30 to L200 baud.
RS-232 and MIL-I-88 for 5, 6, 7 , and I bit data
word length; set via front panel or Remote
Control command.
fnternal Built-In-Test (BIT) loop-back of
Modulator signal into Demodulator inputt BIT
Ievels = 0 dBrn, -2O dBm, and -45 dBm.
OPTIONAL FEATURE: Connects two ST-8000A FSK
Modems for two-receiver combination diversity.
Requires OPTfON 0l-.
600 ohm +L0%, balanced.
-35 dBm to 0 dBm into 500 ohm; set via Front
Panel adjustment.
30 to 12OO baud in L.0 baud increments.
FSK as defined in MIL-STD-188C (2.347 & 4.5.1-5)
and MIL-188-Ll-0A (5.2.L, 5.2.2, & 5.3.L.3).
AII harmonics less than -40 dBm, referenced to
O dBrn output signal.
A11 non-harmonic spurious outputs less than -60
dBm.
300 to 3000 Hz in 0.5 Hz increments.
30 to 27OO Hz in L.O Hz increments.
MARK and SPACE oT CENTER and SHIFT.
Turns Modulator output tones OFf. Mute
selected via Front PaneI keypad or remote
control command. AUTO MUTE may be selected by
internal option junper to turn output tones OFF
a delay period after input TXD has ceased.
AUTO MUTE De1ay: 0.000 to 9.999 seconds in L.0
msec. increments; set via internal option
switches.
HAL9t-04 L6 ST-8OOOA OPERATOR'S MANUAL 87 0-0800s

INTRODUCTION
Transmit Data fn:
Transmit Clock:
Data Sense:
Keyline Output:
DRTS/DCTS:
1.3.3 Modem Control
Control Input:
Selection:
Memory:
Current Parameters:
1.3.4 Front Panel
Data Entry:
Keys:
Indicators:
PAGE L-4
30 to L200 baud, RS-232 (MARK = -V) or MIL-188
(MARK : +V); selected via internal option
jumper.
Provides synchronous transmit clock for data
terminal devices . RS-2 3 2 , 3 O to t-2 OO baud ;
clock frequency : selected data rate.
NORMAL oT REVERSE.
Isolated relay contact output for control of
transmit/receive function (PTT) . Keyline Delay
is controlled by Auto-MUTE delay setting.
Data I/O connections used to irnmediately
activate Modulator Output tones and Keyline (to
transmit condition). Signal input to DRTS
enables Modulator output and Keyline. Signal
output DCTS is delayed 200 msec. from DRTS
activation and may be used to control data flow
of the transmit data device.
Set parameters using Front panel keypad and/or
rear panel REMOTE port.
Front Panel REMOTE keypad switch or via REMOTE
Port command (R0/R1).
AIl previously set parameters and conditions
are stored and saved. When AC power is
interrupted, previously set parameters are
restored on power-ON.
Front Panel LED annunciators and frequency
displays reflect current operating conditions
for rrLocalrr (Front Panel)' or rrRemotert (REMOTE
port) control.
27 Key keypad.
0.5, 0 through 9, ENTER, M/S CENT, BIT, 2nd,
FSK, MARK ONLY, SPACE ONLY, DIV, MUTE, REMOTE,
AMH HOLD, NORM REV, SYNCH REGEN, CHAN, BAUD
RATE, CLEAR.
AII indicators are visible on front panel;
Keypad annunciators on ENTER, DIV, MUTE, and
REMOTE keys. Separate LED annunciators for
DEMOD, MOD, MARK, CENTER, SPACE, SHIFT, SYNCH,
HALg 104 15 ST-8OOOA OPERATOR'S MANUAL 87 0-08005

INTRODUCTION
Frequencies:
Signal Level:
Other Controls:
1.3.5 Remote Control
Data Format:
Data Rate:
Unit Address:
Multi-Modem:
Commands:
Control Commands:
s-Digit RED LED display
s-Digit RED LED display
4-Digit RED LED display
1-Digit RED LED display
Two 20-segment RED LED
from -42 dBn to +6 dBm
: 1- (Modulator) : Bars
SPACE output leve1s.
Bars show signal input
for MARK/CENTER;
for SPACE/SHIFT;
for BAUD;
foT CHANNEL.
Bar Graphs, calibrated
(600 ohm reference). CH
show MODUI,ATOR MARK ANd
CH : 2 (Demodulator):
levels to demodulator.
PAGE ].-5
FSK, REGEN, MK ONLY, SP ONLY, AMH, HOLD, ANd
REV.
POWER Controls AC power to ST-8000A, OUTPUT
LEVEL Continuous adjustment of Modulator
output level.
RS-232 (MARK = -V) or MIL-188 (MARK : +V),
selected by internal option jumpers; compatible
with VT-IOO and other data terminal devices.
Data format: l- Start bit, 8 data bits (bit $ =
SPACE), 2 stop bits.
l-l-0, 300, 600, l-200 , 24oo , 4800, 9600 , L9 ,2OO ,
or 38,400 baud selected by internal switch.
Selected by internal option switch to Unit L
through Unit 9 (Channel select COL C18).
Up to nine ST-8000A Modems may have REMOTE
ports rrdaisy-chainrr connected for control by
one data terminal. Each modem responds only
when addressed.
AII Front Panel featureb of the ST-8OOOA may be
set via REMOTE port commands (except Modulator
Output Level and POWER ON). Commands may be
set f or rr I ong rr or rr short rr command f ormat -
Command echo to controlling terminal may be set
oN or oFF. Once given unit is selected
(Channel command), further commands may be
issued to that unit without repeating Channel
number.
Status, Select Channel, Set MARK, Set SPACE,
Set CENTER, Set SHIFT, Set BAUD, Select FSK
mode, Select MARK ONLY mode, Select SPACE ONLY
mode, Se1ect Synchronous mode, Select
Asynchronous mode and set character length in
bits, S elect / disable +0.5 Hz frequency
increment, Set NORMAL/REVERSE sense, Set
HAL9 104 16 ST-8OOOA OPERATOR,S MANUAL 87 0-08005

INTRODUCTION
Control Signals:
1".3.6 Rear Panel Connections
DATA I/oz
AUDrO I/oz
REMOTE:
DIVERSITY:
AC POWER:
MULTI.NATIONAL
OPERATION:
PAGE 1-5
Channel HOLD mode, Set/disable MUTE function,
SeIect/disable Diversity (onIy with Diversity
OPTION 01), Set/disable Automatic MARK Hold
(AMH), SeIect/disable Regeneration function,
Set/disable short REMOTE Controt command
format, Enable or disable LOCAL/REMOTE mode.
Input Data (RXD), Output Data (TXD), Status
Input (CTS), Status Output (RTS) that is a
continuous + voltage, Status Output (CTS).
Rear panel connector JL (MS27508EL4F35SB) ;
Signals include: Demodulator Undetected MARK
output, Undetected SPACE output, Carrier Detect
(CD) output, Demodulator analog ground, Keyline
Re1ay (two isolated connections), Data Request
to Send input (DRTS), Data Clear To Send output
(DCTS), Transmit Clock output (TXC), Modulator
Data input (TXD), Demodulator Mid-Bit Clock
output (RXC), Demodulator RS-232 Data output
(RS-RXD) , Dernodulator MIL-188 Data output (MIL-
RXD), Modulator analog ground, Chassis ground
(shield), and jumper to AUDIO A/O (.J2).
Rear panel connector J2 (MS2750881-4F35SA):
Signals include: Modulator FSK Audio output
(two balanced connections), Keyline Relay
output (two isolated connections), Demodulator
FSK Audio input (two balanced connections),
Chassis ground (shield), and jumper to DATA f/O
(r1) .
Rear Panel connector J4 (MS27508810F35P) :
Signals include: Data input (RXD), Status
input (CfS), Data Otitput .(TXD), Status output,
*V, (RrS), Status Output (CTS), and Digital
ground.
Rear Panel connector J5 (MS27508810F355) :
OPTfONAL, requires inclusion of DIVERSfTY
OPTION-01.
Rear Panel connector J3 (IEC 320):
Signals include: AC Power LfNE, AC Power
NEUTRAL, and AC Power SAFETY GROUND.
HAL9 104 16 ST-8OOOA OPERATOR'S MANUAL 87 0-08005

INTRODUCTTON
},IIL OPERATIONS:
PAGE L-7
Rear PaneI Connector J3a (MS274728L2F98P):
Adapter cable that plugs into IEC AC Power
connector (J3). Signals include: AC Power
LINE, AC Power NEUTRAL, and AC Power SAFETY
GROUND.
Chassis Ground terminal for connection to
system safety ground.
GND
L.3.7
FUSE
ACV
FREQ
Other Rear Panel Devices
Field replaceable 0.5 Amp. slow-blow fuse.
Switch to change between nominal 1-15 +1"0? and
230 +l-08 VAC power input.
Switch to change between low and hiqh frequency
AC power sources (50/60 Hz or 400 Hz).
1.3.8 Physical Data
Cabinet Finish: Front Panel: Light cray
Cabinet Style:
Size:
Wei-ght:
AC Power:
AC Protection:
1.3.9 Compatibility
Interoperabil ity:
Safety:
RFI:
Cabinet: Natural aluminum iri-dite finish.
19rt rack mountingi rack handles included.
3.50!' High x 18.0il Deep x L9.0r' Wide (8.9 cm x
45.7 cm x 48.3 cm)
16 lbs (7 .3 kq) net, 28 lbs ( 1.2 . 8 kg) shipping.
115 VAC +1OZ or 23O VAC +10t, 47 to 44O Hzi 30
Watts.
Rear panel fuse, 0.5 Amps, slow-blow.
The ST-8000A is fulIy compatible and
interoperable with the Model L28OA/14 FSK Modern
manufactured by the Frederick Electronics
Corporation. Rear panel connectors and signal
connections are completely compatible with
cabling for the L29OA/lq FSK Modem. The ST-8000A
REMOTE port is completely conpatible and will
operate in a multi-unit connection of up to
nine L2eOA/tq and ST-8000A FSK Modems.
ul,t-950, EN50950.
In accordance with Fcc Part L5 (Class A),
VDE/TUV (Germany) and BS (United Kingdom).
HAL9 104 16 ST-8OOOA OPERATOR'S MANUAL 87 0-08005

INTRODUCTTON
Telecommunications :
Environment:
Reliability:
Maintenance:
Warranty:
PAGE 1.-8
FCC Part 68, FTZ and ZZF, BABT and BSI.
O to 50 degrees C, 95t Relative Humidity (non-
condensinq) i Sea level to 1O,OOO feet.
Transport at up to 50,000 ft., unpressurized.
(MIL-HDBK-21,78, Method 5. L (Stress Analysis) ,
at 25 Degrees C, Gg environment.
Depot repair at HAL Communications in Urbana,
Il1inois. Built-In-Test (BIT) for field
determination of failure. Mean-Time-To-Replace
remove defective unit, replace with new unit,
test new unit). Factory repair time: 30 days.
One year from date of purchase.
HAL91 0415 ST.SOOOA OPERATOR'S MANUAL 870-08005

CHAPTER 2
INSTALI,ATION
2.L GENERAL
This chapter explains how to install the ST-8000A MODEM in a data
communications system. fncluded are: (1) directions for unpacking
the modem, (2) setting power and signal option switches and
jumpers, (3) making cable connections, (4) and typical connections
that may be used between the ST-8OOOA and other eguipnent. Close
attention to these steps is reguired to assure proper operation of
the MODEM in the data system.
2.2 UNPACKTNG AND INSPECTION
2.2.I Unpacking
Each ST-8000A FSK MODEM is packed as shown in Figure 2.A. The unit
is double-boxed. The outer box is a special weather-proof box.
The inner box is vacuum sealed against moisture penetration. If it
is necessary to return the ST-8000A to the factory for repair or
otherwise re-ship the ST-8000A, these packing techniques must be
followed. See Section 6.7 for re-packing instructions.
Before opening the shipping carton, examine it carefully for
evidence of shipping damage. Note aII exterior damage. Open the
outer shipping carton and remove the inner carton. Retain the
outer carton for later use. Examine and note any damage found to
the inner carton. Open the water-proof sealed bag around the inner
carton and remove the inner carton. The inner carton is sealed
with shipping tape. Cut the tape to remove the unit.
Remove the ST-8OOOA and its cushioning end-caps from the i.nner
carton. Again, exarnine the packing materials and unit itself for
evidence of shipping damage - note aII found.
Packed on top of the ST-8000A are the Accessory Bag and packages of
desiccant. Discard the desiccant and set the Accessory Bag aside.
At this point, if shipping damage has been found, file a written
claim with the shippinq agency and forward a copy of the claim to
your supplying agency (HAL Communications, shipping depot, etc. ).
NOTE: Claims for shipping danage must originate at receiving end.
Claims cannot be originated by HAL or the supplying Depot. In case
of damage, keep all shippinq materials. A representative of the
shipping agency wiII want to examine all items.
HAL9104 16 ST-8OOOA OPERATOR'S MANUAL 87 0-0800s

PAGE 2-2
INSTALLATION
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2.L ST-8OOOA PACKAGING FOR
ST-8OOOA OPERATOR'S MANUAL
FIGURE
HAL9104 L6
S.
\
87 0-08005
SHIPMENT