Harris RF Communications Division VSR-4141-001 differential GPS ground station transmitter User Manual users manual

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Date Submitted	2000-08-15 00:00:00
Date Available	2001-04-05 00:00:00
Creation Date	2000-08-15 18:45:31
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Document Title	users manual

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Document Title: LAAS Host Simulator User Manual
Document Approval
Project Manager
Name: J. Lundberg
Date and Signature
Process Approvals
SQA Manager
Name: D. Kavanagh
ATC CM Manager
Name: B. Roeder
ATC SW Manager
Name: R. Gray
ATC Dir. Of Ops.
Name: J. Sternowski
Date and Signature
Date and Signature
Date and Signature
Date and Signature
Copyright  2000 by Harris Corporation, RF Communications Division All rights reserved. No part of this publication may be reproduced or transmitted in
any form or by any means, electronic or mechanical, including photocopy, recording, or any information storage and retrieval system, without permission in
writing by Harris Corporation, RF Communications Division, Rochester, New York, USA
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Change History
Issue Change ID Description
1.0
Initial Release
Date
09 June 2000
Author/Signature
D. Hoppe
Copyright  2000 by Harris Corporation, RF Communications Division All rights reserved. No part of this publication may be reproduced or transmitted in
any form or by any means, electronic or mechanical, including photocopy, recording, or any information storage and retrieval system, without permission in
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TABLE OF CONTENTS
INTRODUCTION
1.1
1.2
1.3
1.4
PURPOSE
SCOPE
SYSTEM OVERVIEW
DOCUMENT OVERVIEW
APPLICABLE DOCUMENTS
2.1
2.2
2.3
GOVERNMENT DOCUMENTS
NON-GOVERNMENT DOCUMENTS
HARRIS CORPORATION RF COMMUNICATIONS DIVISION DOCUMENTS
LAAS HOST SIMULATOR HARDWARE REQUIREMENTS
3.1
3.2
3.3
PC SYSTEM REQUIREMENTS
COMPUTERBOARDS CIO-CTR05 COUNTER I/O ISA CARD
INTERFACE BOX
OPERATION OF THE LAAS HOST SIMULATOR
4.1
CONNECTING LAAS RECEIVER AND LAAS TRANSMITTER TO LAAS HOST SIMULATOR PC
4.2
FILE PLACEMENT
4.3
HOW TO CONFIGURE AND EXECUTE THE LAAS HOST SIMULATOR
4.3.1
Installing the Counter I/O ISA card
4.3.2
Determining if the Counter I/O ISA card is properly installed
4.3.3
Determining if the LAAS Host Simulator can communicate with the LAAS radios
4.4
CALIBRATING COUNTER I/O ISA CARD
4.5
EXPLANATION OF COLLECTING BLOCK FAILURE RATE STATISTICS TO A FILE COMMAND
ALPHABETICAL LISTING OF ACRONYMS AND ABBREVIATIONS
10
10
10
10
11
11
12
14
List of Appendices
Appendix A Help File Text ................................................................................................................................. 15
Appendix B HOSTLAAS.CFG file / description of entries ..................................................................................... 24
Appendix C Adapter for LAAS Extended Sensitivity Receiver ............................................................................... 25
Appendix D Connecting LHS to LAAS receiver and LAAS transmitter..................................................................... 26
Copyright  2000 by Harris Corporation, RF Communications Division All rights reserved. No part of this publication may be reproduced or transmitted in
any form or by any means, electronic or mechanical, including photocopy, recording, or any information storage and retrieval system, without permission in
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1.1
Introduction
Purpose
The purpose of this document is to describe how to setup the Local Area Augmentation System (LAAS) Host Simulator
(LHS). The additional purpose of this document is to provide a brief description of how to operate the LAAS Host
Simulator. The LAAS Host Simulator will also be referred to as LHS.
1.2
Scope
The LAAS Host Simulator User Manual describes the requirements for the Personal Computer (PC) used to control a
LAAS receiver and a LAAS transmitter. This document also describes how to configure the ComputerBoards, Inc.
CIO-CTR05 Counter I/O ISA card. In addition this document provides a brief description of how to operate the LHS.
1.3
System Overview
The LAAS Host Simulator system consists of the following equipment:
•
•
•
•
•
Intel compatible PC with monitor, keyboard, and two serial ports
A ComputerBoards, Inc. CIO-CTR05 Counter I/O ISA card that plugs into the PC bus
Any of the following receiver/transmitter configurations:
• One LAAS transmitter
• One LAAS receiver
• One LAAS receiver and one LAAS transmitter
Interface Box with power supply
Shielded RS-232 cables to connect LHS PC to Interface Box and shielded RS-232 cables to connect
Interface Box to a LAAS receiver and a LAAS transmitter
The LHS is used to demonstrate that a LAAS receiver and a LAAS transmitter can be commanded by and report
status to a controlling PC. In addition the LHS is used to demonstrate that LAAS messages can be transmitted in
various time slots and received and reported to the controlling PC.
1.4
Document Overview
This document is comprised of 5 major sections including: an introduction to the document, a list of referenced
documents, a description of the hardware needed for operation of the LAAS Host Simulator, a description of how to
operate and how to configure the LAAS Host Simulator, and a list of acronyms and abbreviations. The Introduction
section provides a general overview of this document and the LAAS Host Simulator. The Applicable Documents
section provides a reference list of documents that provide supporting information to the contents of this document.
The Hardware Requirements section lists the system requirements for the PC used in the LAAS Host Simulator
system, a brief description of the CIO-CTR05 Counter I/O ISA card, and a brief description of the Interface Box that
connects the LAAS Host Simulator to the LAAS receiver and the LAAS transmitter. The Operation section describes
how to connect the cables from the PC to the Interface Box and from the Interface Box to the LAAS receiver and the
LAAS transmitter, the files necessary for operation of the LAAS Host Simulator and their placement, and a brief
Copyright  2000 by Harris Corporation, RF Communications Division All rights reserved. No part of this publication may be reproduced or transmitted in
any form or by any means, electronic or mechanical, including photocopy, recording, or any information storage and retrieval system, without permission in
writing by Harris Corporation, RF Communications Division, Rochester, New York, USA
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explanation of configuration options. The Acronyms and Abbreviation section provides an alphabetized list of acronyms
and abbreviations used within this document.
Copyright  2000 by Harris Corporation, RF Communications Division All rights reserved. No part of this publication may be reproduced or transmitted in
any form or by any means, electronic or mechanical, including photocopy, recording, or any information storage and retrieval system, without permission in
writing by Harris Corporation, RF Communications Division, Rochester, New York, USA
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2.1
Applicable Documents
Government Documents
The following documents form a part of this specification to the extent specified herein.
SPECIFICATIONS
Federal
none
STANDARDS
Military
none
OTHER PUBLICATIONS
Handbook
none
2.2
Non-Government Documents
The following documents form a part of this specification to the extent specified herein. In the event of conflict between
the documents referenced herein and the contents of this specification, the contents of this specification shall be
considered a superseding requirement.
SPECIFICATIONS
none
STANDARDS
none
OTHER PUBLICATIONS
none
Technical society and technical association specification standards are generally available for reference from libraries.
They are also distributed among technical groups and using Federal Agencies.
Copyright  2000 by Harris Corporation, RF Communications Division All rights reserved. No part of this publication may be reproduced or transmitted in
any form or by any means, electronic or mechanical, including photocopy, recording, or any information storage and retrieval system, without permission in
writing by Harris Corporation, RF Communications Division, Rochester, New York, USA
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2.3
Harris Corporation RF Communications Division Documents
The following documents form a part of this specification to the extent specified herein. In the event of conflict between
the documents referenced herein and the contents of this specification, the contents of this specification shall be
considered a superseding requirement.
SPECIFICATIONS
none
STANDARDS
none
OTHER PUBLICATIONS
00-6400A01
LAAS Host Simulator Test Plan
Copyright  2000 by Harris Corporation, RF Communications Division All rights reserved. No part of this publication may be reproduced or transmitted in
any form or by any means, electronic or mechanical, including photocopy, recording, or any information storage and retrieval system, without permission in
writing by Harris Corporation, RF Communications Division, Rochester, New York, USA
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LAAS Host Simulator Hardware Requirements
The LAAS Host Simulator needs the following hardware:
•
•
•
•
•
•
•
•
•
An Intel (or equivalent) based PC
ComputerBoards, Inc. CIO-CTR05 Counter I/O ISA card
An Interface Box with power supply
A LAAS VHF Extended Dynamic Range Receiver or a LAAS VHF receiver
A LAAS VHF Transmitter
A cable to connect the Counter I/O ISA card to the Interface Box
Shielded RS-232 cables to connect the PC COM ports to the Interface Box
Shielded RS-232 cables to connect the Interface Box to the LAAS receiver and the LAAS transmitter
The adapter cabling shown in Appendix C may be used to allow the connection of the LAAS Host Simulator
to the VDR-2205 hardware platform used for the LAAS Enhanced Sensitivity Receiver
The following sections provide a brief description of the PC System Requirements, a brief description of CIO-CTR05
Counter I/O ISA card and a brief description of the purpose of the Interface Box. The other items listed above will not
be described because these items do not require any specific setup or their purpose is self explanatory.
3.1
PC System Requirements
Windows 95 running in DOS mode (not a DOS window)
(Note: The LAAS Host Simulator may run under Win98, but has not been tested.)
16 Megabytes of RAM
One available ISA slot
IRQ7 available
Two serial ports available (COM1, COM2)
Pentium @ 133 MHz (or equivalent)
3.2
ComputerBoards CIO-CTR05 Counter I/O ISA card
To meet the control requirements of the LAAS receiver and LAAS transmitter, a Counter I/O ISA card manufactured
by ComputerBoards, Inc. is installed in the PC. This is a half-length card, and occupies one ISA slot. The default
location of the card in the PC I/O space is 0x300. This may be changed by reconfiguring jumpers on the card. An
interrupt generated by the Counter I/O card is mapped to IRQ7. This IRQ is normally associated with the parallel port
of the PC. This Counter I/O ISA card is used to generate the simulated Global Positioning System (GPS) time marks
used by the LAAS receiver and the LAAS transmitter.
3.3
Interface Box
The LHS communicates to the LAAS receiver and the LAAS transmitter via two serial ports, COM1 and COM2. All
signals from the PC (COM ports and Counter I/O card) are routed through an interface box before going to the LAAS
receiver and the LAAS transmitter. This interface box serves two purposes, it shifts the RS-232 and TTL signal levels
to RS-422 signal levels, and it routes the Counter I/O ISA card signals as required by the LAAS Host Simulator.
Copyright  2000 by Harris Corporation, RF Communications Division All rights reserved. No part of this publication may be reproduced or transmitted in
any form or by any means, electronic or mechanical, including photocopy, recording, or any information storage and retrieval system, without permission in
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Operation of the LAAS Host Simulator
4.1
Connecting LAAS Receiver and LAAS Transmitter to LAAS Host Simulator PC
Refer to Appendix D for a pictorial representation of how the LAAS Host Simulator PC is connected to the LAAS
receiver and the LAAS transmitter.
Plug cables into the following ports on the LAAS Host Simulator PC:
•
•
•
The Counter I/O ISA card cable into the Counter I/O ISA card connector
A shielded RS-232 cable into COM 1
A shielded RS-232 cable into COM 2
Plug the cables from the LAAS Host Simulator PC into the Interface Box as follows:
•
•
•
Plug the unconnected end of the Counter I/O ISA Card cable into the connector labeled TIMER CARD
Plug the unconnected end of the COM 1 cable into the connector labeled COM 1 (TX)
Plug the unconnected end of the COM 2 cable into the connector labeled COM 2 (RX)
Plug cables into the following connectors on the Interface Box:
•
•
•
•
Plug a shielded RS-232 cable into the connector
Plug a shielded RS-232 cable into the connector
Plug a shielded RS-232 cable into the connector
Plug a shielded RS-232 cable into the connector
labeled J1 (RX)
labeled J1 (TX)
labeled J2 (RX)
labeled J2 (TX)
Plug the cables from the Interface Box into the LAAS Transmitter as follows:
•
•
Plug the unconnected end of the J1 (TX) cable into the port labeled J2 DATA I/O
Plug the unconnected end of the J2 (TX) cable into the port labeled J3 GPS TIME MARK
Presently there are two receivers that support the LAAS Receiver Command Protocol, the “standard product” LAAS
receiver and the LAAS Extended Sensitivity Receiver.
If the LHS will be used with the “standard product” LAAS receiver perform the following steps to plug the
cables from the Interface Box to the LAAS Receiver:
•
•
Plug the unconnected end of the J1 (RX) cable into the port labeled J2 DATA I/O
Plug the unconnected end of the J2 (RX) cable into the port labeled J3 GPS TIME MARK
If the LHS will be used with the LAAS Extended Sensitivity Receiver, perform the following steps to plug the
cables from the Interface Box to the LAAS Extended Sensitivity Receiver:
•
•
Obtain an adapter connector as described in Appendix C or an equivalent adapter connector and
plug the 25 pin D-Connector into the port labeled J3 DATA I/O
Plug the unconnected end of the J1 (RX) cable into the 9 pin D-Connector labeled DATA I/O
Copyright  2000 by Harris Corporation, RF Communications Division All rights reserved. No part of this publication may be reproduced or transmitted in
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•
Plug the unconnected end of the J2 (RX) cable into the 9 pin D-Connector labeled GPS TIME
MARK
This completes the connecting of the LAAS Receiver and the LAAS Transmitter to the LAAS Host Simulator.
4.2
File Placement
The LAAS Host Simulator consists of the following three (3) files:
•
•
hostlaas.exe
hostlaas.cfg
•
laashelp.txt
application
configuration file for LAAS Host Simulator (address of Counter I/O ISA card and
calibration constant for crystal oscillator on the Counter I/O ISA card)
online help text file
The above listed files must be installed in a common directory.
4.3
How to configure and execute the LAAS Host Simulator
The LAAS Host Simulator is a DOS program, therefore the PC used to execute this program must be booted as a
DOS machine. The following configuration is required to be done:
•
•
change the line labeled address=value to the address of the Counter I/O card, this only has to be done if
the address of the Counter I/O card is not 0x300, because the LAAS Host Simulator defaults to an address
of 0x300
change the line labeled CountsPerSecond=value to the value determined by executing the procedure
described in Section 4.4 of this document, in order to generate accurate time marks
4.3.1 Installing the Counter I/O ISA card
Perform the following steps to install the Counter I/O ISA card:
1. Set the address of the Counter I/O ISA card to 0x300 unless it is known that this address conflicts with a
card already installed in the PC. If so, pick one of the other valid addresses, set the Counter I/O card to
that address and update the address= line in the LHS configuration to the selected address.
2. Set the IRQ to be used by the Counter I/O card to 7.
3. Set the number of wait states to no wait states.
4. Remove the cover from the PC.
5. Identify an empty ISA slot that provides enough room on the outside of the cabinet to plug a cable into the
D-connector located on the Counter I/O ISA card.
6. Install the Counter I/O ISA card into the empty ISA slot.
7. Replace the cover on the PC.
4.3.2 Determining if the Counter I/O ISA card is properly installed
From the directory containing the files listed in Section 4.2, type in the following command from the DOS prompt:
hostlaas
Copyright  2000 by Harris Corporation, RF Communications Division All rights reserved. No part of this publication may be reproduced or transmitted in
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After typing the above line, on the monitor there should be two windows displayed, one window consisting of 25 lines
and one window consisting of 1 line. The window with 25 lines should have some text displayed, this is the window
where the command acknowledgments from the LAAS radios and status reported by the LAAS radios is displayed.
The 1 line window is where commands for the LAAS Host Simulator are typed.
To determine if the Counter I/O ISA card is installed correctly perform the following steps:
1. After connecting the system together as described in section 4.1, start the LAAS Host Simulator and type in
the following command:
rpe 1
2. The LAAS transmitter should power on.
3. If the LAAS transmitter does not power on, then check that all of the cables are plugged in correctly and
that all of the cables are connected securely.
4. After checking the cables type in the following command:
rpe 1
5. If the LAAS transmitter does not power on, repeat the steps in the section 4.3.1 using another valid address
for the Counter I/O ISA card.
6. Repeat steps 1 through 5 of this procedure until the LAAS transmitter powers on or all valid addresses have
been tried. If all valid addresses have been tried and the LAAS transmitter has not powered on then the
Counter I/O ISA card may not be working.
4.3.3 Determining if the LAAS Host Simulator can communicate with the LAAS radios
To determine if the LAAS Host Simulator can communicate with the LAAS radios, perform the following steps:
1. After connecting the system together, as described in section 4.1, start the LAAS Host Simulator and type
in the following commands:
rpe 1
bit v
2. The BIT/Status for both the LAAS receiver and the LAAS transmitter should be displayed.
3. If BIT/Status for both the LAAS receiver and the LAAS transmitter is not displayed, then check that all of
the cables are plugged in correctly and that all of the cables are connected securely. Also check that the
LAAS receiver and the LAAS transmitter are powered on.
4. After checking the cables type in the following command:
bit 1
5. The BIT/Status for both the LAAS receiver and the LAAS transmitter should be displayed.
6. If BIT/Status for both the LAAS receiver and the LAAS transmitter is not displayed then the PC may have a
bad serial port.
4.4
Calibrating Counter I/O ISA card
The Counter I/O ISA card has a 50 PPM crystal oscillator that is used as the time base for the simulated GPS 1 pulse
per second signal. The counters are configured to give one microsecond resolution. This equates to a possible error of
50 microseconds over a one second period. The configuration file for the LAAS Host Simulator contains a calibration
parameter that can be set to reduce this error. Note that the long term aging characteristics of the crystal oscillator
may require that this value be adjusted occasionally to maintain the desired accuracy.
Copyright  2000 by Harris Corporation, RF Communications Division All rights reserved. No part of this publication may be reproduced or transmitted in
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The calibration consists of accurately measuring the simulated GPS signal period and determining the error (in
microseconds) from one second. The CountsPerSecond entry of the configuration file should then be changed by that
number. The default value of CountsPerSecond is 16960, which will provide a nominal 1 PPS simulated GPS signal
given an ideal crystal oscillator.
For example, if the simulated GPS period is measured and determined to be 0.999977 seconds (23 microseconds
less than one second), and the CountsPerSecond parameter is currently set to 16960, the new value for
CountsPerSecond would be 16983, to increase the period by 23 microseconds. The entry in the configuration file
would be:
CountsPerSecond=16983
The simulated GPS signal may be measured between pins 4 and 5 of the connector labeled J2(TX) on the Interface
Box. The LAAS Host Simulator program must be running, the Counter I/O ISA Card cable must be connected, and the
Interface Box must be powered to make this measurement.
4.5
Explanation of Collecting Block Failure Rate Statistics to a File Command
The bfr command allows a second command line argument which is used to log the test results to a file.
When used, the following statistics are written to the file (in the order displayed):
a. Received Counter
b. Missed Burst
c. Total Missed Bursts
d. CRC Status (0 – CRC is valid, 1 – CRC is invalid)
e. Total Messages with CRC error
f. FEC Status (0 – FEC was not used, 1 – FEC was used)
g. Signal Strength (dBm)
To access this option enter the following command:
bfr value filename where
value is the size of the message (ex. 222)
filename is the name of the file to which the statistics are written (ex. test)
filename has the following constraints:
a. the file is written to the directory where the LAAS Host Simulator is executing
b. the file extension of bfr is added to the entered filename
c. the file name is limited to 8 characters, if more than 8 characters are entered, the entered file name is
truncated to 8 characters
d. if file name entered is identical to a file already in the directory, then the existing file is overwritten.
To close this file (this also stops the BFR test) enter the following command:
Copyright  2000 by Harris Corporation, RF Communications Division All rights reserved. No part of this publication may be reproduced or transmitted in
any form or by any means, electronic or mechanical, including photocopy, recording, or any information storage and retrieval system, without permission in
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bfr 0
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Alphabetical Listing of Acronyms and Abbreviations
Abbreviation
BFR
GPS
I/O
IRQ
ISA
LAAS
LHS
PC
RAM
TTL
VHF
Meaning
Block Failure Rate
Global Positioning System
Input/Output
Interrupt ReQuest
Industry Standard Architecture
Local Area Augmentation System
LAAS Host Simulator
Personal Computer
Random Access Memory
Transistor-Transistor Logic
Very High Frequency
Copyright  2000 by Harris Corporation, RF Communications Division All rights reserved. No part of this publication may be reproduced or transmitted in
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Appendix A – Help File Text
bit [0/1] [r/t] [v/h] [s] [c]
Requests the current BIT/Status from the receiver, transmitter, or both.
With no argument requests BIT/Status from both the receiver and transmitter and displays the response in hex or
verbose format.
[0] disable automatic requests (nominally occur at 1 request per second)
[1] enable automatic requests (nominally occur at 1 request per second)
[r] command or option affects receiver only
[t] command or option affects transmitter only
[v] verbose (text description of response, 'sticky', i.e. applies to all subsequent requests until explicitly changed)
[h] hex (response shown as hex characters, 'sticky')
[s] suppress display of the BIT/Status response. Normally the response to the automatic request is displayed. This
suppresses that display, this state is cleared by issuing a "bit v" or "bit h" command
[c] send the BIT/Status Clear message to the transmitter or receiver (or both)
-------------------txt q [s] b 1-249 [s] f file 0
Commands the transmitter to start or stop a message transmission sequence.
q [s] The message data transmitted is:
"The quick brown fox jumped over the lazy dog 0123456789",0xD
b 1-249 [s] The message data is the 511 BER data
f file The message data is the 511 BER data, fil = filename of file containing transmission slots for Data Message
and which slots to send the message from the LAAS Host Simulator to the transmitter
0 Stops a continuous transmission started by txt q, txt b, or txt f
[s] Single Message Transmission (defaults to continuous)
-------------------bfr 0, 6-222 [filename] d [0/1]
Commands the transmitter to start or stop transmitting a message
that contains 511 BER message data. Displays message transmission
statistics.
0 Terminate Block Failure Rate test
6-222 The message data contains selected number of bytes of 511 BER message data
Copyright  2000 by Harris Corporation, RF Communications Division All rights reserved. No part of this publication may be reproduced or transmitted in
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filename Limited to 8 characters, extension of bfr added to
inputted filename
Collects the following statistics to the inputted filename (in the order listed):
received sequence number, missed bursts, accumulated missed bursts, CRC status (0-no error,
1-CRC error), accumulated CRC errors, FEC status (0-not used, 1-used), and received signal
strength (dBm)
d 0 Disables BFR statistics display
d 1 Enables display of BFR statistics and displays last result
-------------------dps [38400/57600/76800] [O/E/N]
Allows the user to change the baud rate and the parity of the serial ports in use by the application.
With no argument displays the current data port settings.
[19200] - set the baud rate for both ports to 19,200
(This option added for debugging only!)
[38400] - set the baud rate for both serial ports to 38,400
[57600] - set the baud rate for both serial ports to 57,600
[76800] - set the baud rate for both serial ports to 76,800
[O]
[E]
[N]
- set the parity for both serial ports to Odd
- set the parity for both serial ports to Even
- set the parity for both serial ports to None
(Note: the data bit count is fixed at 8 bits, and the stop bits are fixed at 1. )
-------------------err [0] t MessageNumber r MessageNumber
This command is used to cause a command message sent from the LHS to a receiver or transmitter to have 1 fewer
byte or 1 more byte than specified by the ICD. In addition this command can be used to corrupt the CRC of a
Data Message. The chosen corruption (1 fewer byte, 1 more byte, or corrupted CRC) will occur the next time the
command or Data Message is sent and only the next time. This command does not create a permanent
corruption of a command or Data Message.
[0]
t [1-18, 20]
Clear all errors
Transmitter only. 1 through 9 creates the selected command message with 1 fewer byte than
specified in the ICD. 10 through 18 creates the selected command message with 1 more byte
than specified in the ICD. 20 creates a Data Message with a corrupted CRC.
Copyright  2000 by Harris Corporation, RF Communications Division All rights reserved. No part of this publication may be reproduced or transmitted in
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r [1-12]
Receiver only. 1 through 6 creates the selected command message with 1 fewer byte than
specified in the ICD. 7 through 12 creates the selected command message with 1 more byte
than specified in the ICD.
-------------------int frq pwr slt [v]
Initializes the transmitter to the entered arguments.
frq [1-400] Sets the Assigned Channel field of the Initialization Message to the entered value
pwr [0-20] Sets the Assigned Power field of the Initialization Message to the entered value
slt [1-ff] Bit field representing the assigned time slots. There are 8 assignable time slots. This bit field represents
the 8 slots, with the LSB the earliest time slot (Assigned Time Slot 1). The bit in each position of the
argument should be set to one if the corresponding slot is assigned, and to 0 if it is not assigned. A value
of 0 is not allowed as input, but is the default value.
[v] Display command response in verbose format
-------------------inr frq [v]
Initializes the receiver to the entered argument.
frq [1-400] Sets the Assigned Channel field of the Initialization Message to the entered value
[v] Display command response in verbose format
-------------------mod [x/s/n] [t/r] [v]
Reports/sets the current mode of the receiver, transmitter, or both.
With no argument displays the current mode of the transmitter and receiver in hex format
[x] Send a Mode Control Command Message to reset [t] transmitter, [r] receiver, or both
[s] Send a Mode Control Command Message to set [t] transmitter, [r] receiver, or both to standby
[n] Send a Mode Control Command Message to set [t] transmitter, [r] receiver or both to normal
[v] Display the response in verbose format. The verbose switch is not sticky and applies only to the current request
[r] Display the current mode of the receiver in hex format
[t] Display the current mode of the transmitter in hex format
--------------------
Copyright  2000 by Harris Corporation, RF Communications Division All rights reserved. No part of this publication may be reproduced or transmitted in
any form or by any means, electronic or mechanical, including photocopy, recording, or any information storage and retrieval system, without permission in
writing by Harris Corporation, RF Communications Division, Rochester, New York, USA
Document Number/Ref.-No.
00-6383A01
(113491 2)
Issue
1.0
Page 18 of 26
mon [0-8] [v/h]
Controls the display of data from the receiver and provides a second method of controlling the display of BIT/Status
responses from both the transmitter and receiver.
With no agruments displays the current enable/disable status of displaying of data from the receiver and
BIT/Status responses.
[0-8] 0 = all BIT/Status and data display disabled
1 = Enable the transmitter BIT/Status response display
2 = Enable the receiver BIT/Status response display
3 = Enable both the receiver and transmitter BIT/Status display
4 = Enable display of transmitter and receiver BIT/Status responses and all the fields of the receiver
data message with the exception of the data itself
5 = Enable display of all the fields of the receiver data message with the exception of the data itself
6 = Enable display of the data field of the receiver data message
7 = all BIT/Status, Data Message fields & data displays enabled
8 = Enable displaying of valid acknowledgement messages
[v] Display response in verbose format
[h] Display response in hex format
-------------------bcr [t/r]
Sends a Bit Clear Request to the receiver, transmitter or both.
With no argument sends a BIT/Status Clear Command Message to both the receiver and the transmitter and
displays the response in hex.
[t] Sends a BIT/Status Clear Command Message to the transmitter and displays the response in hex
[r] Sends a BIT/Status Clear Command Message to the receiver and displays the response in hex
-------------------urm t/r [0-249] [v]
Sends an unrecognized message to the receiver or the transmitter.
t [0-249] Sends a message with the Message ID 0xFF to the transmitter having a Message Data of length [0-249]
r [0-249] Sends a message with the Message ID 0xFF to the receiver having Message Data of length [0-249]
[v]
Display command response in verbose format
--------------------
Copyright  2000 by Harris Corporation, RF Communications Division All rights reserved. No part of this publication may be reproduced or transmitted in
any form or by any means, electronic or mechanical, including photocopy, recording, or any information storage and retrieval system, without permission in
writing by Harris Corporation, RF Communications Division, Rochester, New York, USA
Document Number/Ref.-No.
00-6383A01
(113491 2)
Issue
1.0
Page 19 of 26
mra [0] [s/r]
This command allows adjustment of the rate of data messages sent to from the LAAS Host Simulator to the
transmitter.
With no argument, displays the current skip value and the current message rate value.
[0] Sets the message rate to be synchronized to the Transmitter Time Mark
[s] Displays a menu alowing the user to select the SKIP value to be set (Range 0 - 255)
[r] Displays a menu alowing the user to select the Message Rate to be set ( Range -25 to 25 (mS) )
-------------------rpe [0/1]
Remote Power Enable, controls the turning on and turning off of the transmitter.
No argument displays the current state of the remote power enable line
[0] Turns the transmitter off
[1] Turns the transmitter on
-------------------sdc [0/1] [v]
Displays the current power source and allows changing the current power source.
No argument displays the response to the current power source request in hex format
[0] Sends a command message to switch the transmitter to the AC power source
[1] Sends a command message to switch the receiver to the DC power source
[v] Display command response in verbose format
-------------------cwt 0/1 [v]
Enables/disables the transmission of a constant waveform.
0 Stops the transmission of the CW signal
1 Starts the transmission of the CW signal. The current frequency and power settings are to be used
Copyright  2000 by Harris Corporation, RF Communications Division All rights reserved. No part of this publication may be reproduced or transmitted in
any form or by any means, electronic or mechanical, including photocopy, recording, or any information storage and retrieval system, without permission in
writing by Harris Corporation, RF Communications Division, Rochester, New York, USA
Document Number/Ref.-No.
00-6383A01
(113491 2)
Issue
1.0
Page 20 of 26
[v] Display command response in verbose format
-------------------tce t/r [v]
Sends a TCXO Adjustment Enable message to the receiver or the transmitter.
t Send a TCXO Adjustment Enable Command Message to the transmitter
r Send a TCXO Adjustment Enable Command Message to the receiver
[v] Display command response in verbose format
-------------------tcd t/r 0/1 [v]
Sends a TCXO Adjustment Direction message to the receiver or the transmitter.
t Send a TXCO Adjustment Direction Command Message to the transmitter
r Send a TXCO Adjustment Direction Command Message to the receiver
0 Decrease the frequency
1 Increase the frequency
[v] Display command response in verbose format
-------------------ver
Displays the version of the LHS, receiver software (DSP and MICRO), receiver hardware, transmitter software (DSP
and MICRO), and transmitter hardware (PA and PS)
An example printout:
LHS
23
TX DSP 10
TX MICRO 11
TX PA 11
TX PS 20
RX DSP 20
RX MICRO 11
--------------------
Copyright  2000 by Harris Corporation, RF Communications Division All rights reserved. No part of this publication may be reproduced or transmitted in
any form or by any means, electronic or mechanical, including photocopy, recording, or any information storage and retrieval system, without permission in
writing by Harris Corporation, RF Communications Division, Rochester, New York, USA
Document Number/Ref.-No.
00-6383A01
(113491 2)
Issue
1.0
Page 21 of 26
tme [t/r] 0/1
Time Mark Enable control.
Not selecting t or r enables/disables time marks for both the receiver and the transmitter.
[t] Enable/Disable transmitter time mark
[r] Enable/Disable receiver time mark
0 Disables time mark
1 Enables time mark
-------------------tmp [0] t/r
Time Mark Period control.
t Menu for adjusting the time mark period of the transmitter is displayed
r Menu for adjusting the time mark period of the receiver is displayed
[0] Selects "perfect" time mark period setting for both the transmitter and the receiver
t 0 Sets "perfect" time mark period for the transmitter
r 0 Sets "perfect" time mark period for the receiver
-------------------tmo [0]
Receiver Time Mark Offset
With no arguments, displays a menu which allows the user to change the time mark offset for the Receiver.
[0] Sets the receiver time mark offset back to zero (i.e. perfect synchronization with the transmitter time mark signal)
-------------------cls
This command causes the application to clear the screen.
--------------------
Copyright  2000 by Harris Corporation, RF Communications Division All rights reserved. No part of this publication may be reproduced or transmitted in
any form or by any means, electronic or mechanical, including photocopy, recording, or any information storage and retrieval system, without permission in
writing by Harris Corporation, RF Communications Division, Rochester, New York, USA
Document Number/Ref.-No.
00-6383A01
(113491 2)
Issue
1.0
Page 22 of 26
exit
This command causes the application to terminate.
-------------------log [start/stop/reset/filename] [filename.ext]
Control the logging of data.
With no arguments, terminates data logging.
[start] Begin logging all transmitted and received data to a data log file named "LOGFILE.TXT". Data is appended
to the existing log file if one exists, else a new file is created.
[stop] Terminate data logging
[reset] Causes the log file to be deleted and, if logging is currently enabled a new log file is created
[filename.ext] logfile.txt
--------------------
Sets the logging file name to "logfile.txt"
scrn 0/1
Set the number of rows displayed on the screen. This command clears the screen and repositions the cursor to the
top line of the screen.
0 Set number of lines on screen to 25
1 Set number of lines on screen to 50
-------------------tick [0/1]
Causes a single character, a '-', to be displayed once per second.
With no arguments, displays whether the tick option is enabled or
disabled.
0 disables this option
1 enables this option
-------------------show [text]
Causes the text following the command "show" to be displayed on the screen. This text is displayed in Light Grey.
--------------------
Copyright  2000 by Harris Corporation, RF Communications Division All rights reserved. No part of this publication may be reproduced or transmitted in
any form or by any means, electronic or mechanical, including photocopy, recording, or any information storage and retrieval system, without permission in
writing by Harris Corporation, RF Communications Division, Rochester, New York, USA
Document Number/Ref.-No.
00-6383A01
(113491 2)
Issue
1.0
Page 23 of 26
run filename.ext
Causes the application to read "filename.ext" and accept commands from this file as though they were typed in on the
command line.
-------------------pause 0/1
This command stops the displaying of data or re-enables the displaying of data on the screen.
1 Stops all data display activity
0 Re-enables data display activity.
-------------------flag [v/h/s/d] [0/1]
Displays/Controls the states of the "Sticky" flags.
With no command parameters this command displays the enable/disable state of all of the "Sticky" flags.
Verbose Flag
Hexidecimal Display Flag
Show Bit/Status Flag
Debug Flag (much debug data displayed)
0 Disabled
1 Enabled
-------------------txmsg xx xx xx xx xx xx xx
Causes the message described by "xx xx xx xx xx xx xx" to be sent to the Transmitter. The message is made up of 1
or more hexadecimal bytes shown above as "xx". A message is made up of a series of 2 character ASCII/hex
characters, each representing a byte of data. For example:
txmsg aa 55 01 01 f0 0f
-------------------rxmsg xx xx xx xx xx xx xx
Causes the message described by "xx xx xx xx xx xx xx" to be sent to the Receiver. The message is made up of 1 or
more hexadecimal bytes shown above as "xx". A message is made up of a series of 2 character ASCII/hex
characters, each representing a byte of data. For example:
rxmsg aa 55 01 01 f0 0f
Copyright  2000 by Harris Corporation, RF Communications Division All rights reserved. No part of this publication may be reproduced or transmitted in
any form or by any means, electronic or mechanical, including photocopy, recording, or any information storage and retrieval system, without permission in
writing by Harris Corporation, RF Communications Division, Rochester, New York, USA
Document Number/Ref.-No.
00-6383A01
(113491 2)
Issue
1.0
Page 24 of 26
Appendix B HOSTLAAS.CFG file / description of entries
See document titled Configuration Data, LAAS Host Simulator, document number 00-6406A01.
Copyright  2000 by Harris Corporation, RF Communications Division All rights reserved. No part of this publication may be reproduced or transmitted in
any form or by any means, electronic or mechanical, including photocopy, recording, or any information storage and retrieval system, without permission in
writing by Harris Corporation, RF Communications Division, Rochester, New York, USA
Document Number/Ref.-No.
00-6383A01
(113491 2)
Issue
1.0
Page 25 of 26
Appendix C Adapter for LAAS Extended Sensitivity Receiver
2205 receiver
GPS
(RX2)
9 pin Female
D connecotr
COM
(RX1)
8 2 3 7 1
20
23
2 3 7 14 16
9 pin Female
D connecotr
25 pin Male
D connecotr
Copyright  2000 by Harris Corporation, RF Communications Division All rights reserved. No part of this publication may be reproduced or transmitted in
any form or by any means, electronic or mechanical, including photocopy, recording, or any information storage and retrieval system, without permission in
writing by Harris Corporation, RF Communications Division, Rochester, New York, USA
Document Number/Ref.-No.
00-6383A01
(113491 2)
Issue
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Page 26 of 26
Appendix D Connecting LHS to LAAS receiver and LAAS transmitter
LAAS Host Simulator
COM 1
TIMER
COM 2
CARD
DATA
LAAS VHF Receiver
GPS
TIME
MARK
Interface Box
DATA
GPS
TIME
MARK
LAAS VHF Transmitter
Copyright  2000 by Harris Corporation, RF Communications Division All rights reserved. No part of this publication may be reproduced or transmitted in
any form or by any means, electronic or mechanical, including photocopy, recording, or any information storage and retrieval system, without permission in
writing by Harris Corporation, RF Communications Division, Rochester, New York, USA

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