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LT-3600
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General Dynamics UP-DN CONVERTER L-BAND, LT-3600 User Manual

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CG-1309
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REV C
FEB 2006
OPERATION & MAINTENANCE MANUAL
UP/DN CONVERTER
L-BAND
LT-3600 SERIES
EXPORT CONTROL WARNING - Do not disclose this document or its contents to non-U.S. Persons, or transmit this document or its contents outside the United States without the written permission of Vertex Communications Cor
oration and required U.S.
1915 Harrison Road
Longview, Texas 75604
Integrated L-Band Up/Dn Converter LT3600 CG-1309
WARRANTY
VertexRSI warrants its products for a period of two (2) years from the date of shipment to be free from defects caused by faulty materials or poor workmanship.
The terms and conditions of this warranty are as follows
• The purchaser must notify VertexRSI promptly upon discovery of such defect.
• The purchaser must return the defective product, postpaid, to:
VertexRSI
1915 Harrison Road
Longview, Texas 75604 USA
• Evaluation of the defective product at VertexRSI shall disclose that such
defects exist and have not been caused by misuse, neglect, improper handling, alteration or accident.
VertexRSI reserves the right to make product improvements and/or design changes in any of its products without incurring any obligation or liability to make the same changes in units previously shipped.
Copyright © 2006 by VertexRSI
All rights reserved
Printed in the United States of America
Contents of the manual are subject to change.
No part may be reproduced or transmitted in any form
or by any means without the written permission of
VertexRSI
1915 Harrison Road
Longview, Texas 75604 USA
(903) 295-1480
(903) 295-1479 FAX
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Integrated L-Band Up/Dn Converter LT3600 CG-1309

TABLE OF CONTENTS

Section 1 General Information ................................................................................................ 6
1.0 Introduction.............................................................................................................................. 6
1.1 Safety Information................................................................................................................... 6
1.2 General Introduction................................................................................................................ 6
1.3 Purpose of Equipment.............................................................................................................. 6
1.4 Specifications........................................................................................................................... 7
1.5 Front Panel............................................................................................................................... 7
1.6 Rear Panel................................................................................................................................ 7
1.7 Cooling..................................................................................................................................... 7
1.8 Part Number Selection.............................................................................................................. 8
Section 2 Installation .............................................................................................................. 12
2.0 Introduction............................................................................................................................. 12
2.1 Unpacking and Inspection....................................................................................................... 12
2.2 Installation Requirements....................................................................................................... 12
2.3 Mechanical Installation........................................................................................................... 12
2.4 Electrical Connections............................................................................................................ 12
2.4.1 Power Input................................................................................................................. 12
2.4.2 L-Band Output (J10)................................................................................................... 12
2.4.3 IF Input (J9)................................................................................................................ 12
2.4.4 IF Output (J3).............................................................................................................. 12
2.4.5 L-Band Input (J4)........................................................................................................ 12
2.4.6 External 10 MHz Input (J2)........................................................................................ 13
2.4.7 SSPB Interface (J6)..................................................................................................... 13
2.4.8 Remote Serial I/O Interface (J7)................................................................................. 13
2.4.9 High Stability 10 MHz Reference (J1) (Optional Connector).................................... 13
2.5 Operational Check .................................................................................................................. 13
2.5.1 Setup........................................................................................................................... 13
Section 3 Operation ................................................................................................................ 14
3.0 Introduction and General Operation....................................................................................... 14
3.1 StarSwitch Operation.................................................................................................. 17
3.1.1 Auto Mode...................................................................................................... 17
3.1.2 Standby Mode................................................................................................. 17
3.1.3 On Mode......................................................................................................... 17
3.1.4 Backup Converter Operation...........................................................................18
3.1.5 Starswitch Alarm.............................................................................................18
3.1.6 Dual Starswitch Operation...............................................................................18
3.2 Front Panel Alarm Settings..........................................................................................19
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Integrated L-Band Up/Dn Converter LT3600 CG-1309
Section 4 Serial Command Set .............................................................................................. 20
4.0 General.................................................................................................................................... 20
4.1 LT-3600 Serial Interface..........................................................................................................20
4.2 Communication Protocol.........................................................................................................20
4.2.1 General Data Format …………………………………………………………………20
4.3 Commands ................................................................................................................................... 21
4.3.1 Set Up/Converter Frequency....................................................................................... 21
4.3.2 Set Down/Converter Frequency.................................................................................. 21
4.3.3 Set Up/Converter Gain................................................................................................ 21
4.3.4 Set Down/Converter Gain........................................................................................... 21
4.3.5 Set Internal 10 MHz Reference Oscillator Offset....................................................... 21
4.3.6 Enable SSPB............................................................................................................... 21
4.3.7 Down/Converter (LNB) Spectrum Control ................................................................ 22
4.3.8 Up/Converter Spectrum Control..................................................................................22
4.3.9 SSPB Band Control .................................................................................................... 22
4.3.10 Set SSPB Gain (Attenuation).................................................................................... 22
4.3.11 Enable Up/Converter .................................................................................................. 22
4.3.12 Enable Down/Converter.............................................................................................. 22
4.3.13 Satellite Memory Store............................................................................................... 22
4.3.14 Satellite Memory Recall ............................................................................................. 22
4.3.15 StarSwitch Mode Select.............................................................................................. 22
4.4 Status Requests .......................................................................................................................... 23
4.4.1 Command Status......................................................................................................... 23
4.4.2 Fractional Frequency Status........................................................................................ 23
4.4.3 Level Status................................................................................................................. 23
4.4.4 L-Band Status.............................................................................................................. 24
4.4.5 Set Cable Slope Factor................................................................................................ 24
4.4.6 Query Cable Slope Factor........................................................................................... 24
4.4.7 Serial Number Read.................................................................................................... 24
4.4.8 Query Software Version ............................................................................................. 24
4.4.9 Query Card Type......................................................................................................... 25
4.4.10 Satellite Memory Status Query................................................................................... 25
4.4.11 Satellite Fractional Frequency Status.......................................................................... 25
4.4.12 Star Switch Status....................................................................................................... 25
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Integrated L-Band Up/Dn Converter LT3600 CG-1309
APPENDICES
A Technical Manual Revision History ....................................................................................... 26
B CCA Software Revision History............................................................................................. 26
C Display Panel Software Revision History............................................................................... 26
LIST OF ILLUSTRATIONS
Figure 1-1 Front Panel with Keypad and LCD Display................................................................ 7
Figure 1-2 Rear Panel .................................................................................................................... 7
Figure 3-1 Front Panel Controls and Indicators ........................................................................... 14
Figure 3-2 Menu Listing............................................................................................................... 15
Figure 3-3 Satellite Memory......................................................................................................... 16
Figure 3-4 StarSwitch Display – Auto Selection...........................................................................17
Figure 3-5 StarSwitch Display – STBY Selection ........................................................................17
Figure 3-6 StarSwitch Display – ON Selection.............................................................................17
Figure 3-7 StarSwitch Display – Backup Converter .....................................................................18
Figuer 3-8 StarSwitch Display – Fault Indication.........................................................................18
LIST OF TABLES
Table 1-1 Integrated L-Band Specifications ..................................................................................9
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Integrated L-Band Up/Dn Converter LT3600 CG-1309

SECTION 1 General Information

1.0 INTRODUCTION
This manual contains installation, operation, and maintenance information for the Integrated L-Band Up/Dn Converter manufactured by VertexRSI, Longview, Tx. Information is organized according to section. Within each section the pages, figures and tables are numbered by section and by order of appear­ance within the section. Unless otherwise noted, any information about the unit applies to the LT-3600, Base Part Number 201667.
1.1 SAFETY INFORMATION
This equipment has been designed to minimize exposure of personnel to hazards.
WWAARRNNIINNGG
A continuous safety earth ground must be provided from the main power source through the main power cord. This is provided in the power cable shipped with the unit. If this power cord is damaged, it should be replaced with cord of equal or better specifications. This cord can be obtained from VertexRSI.
Servicing instructions are for use by trained personnel only. To avoid dangerous electric shock, do not perform any servicing unless qualified to do so. Do not replace components with the power cord connected to the equipment.
WWAARRNNIINNGG
Some of the adjustments described in this manual are performed with power applied while protective covers are removed. Always be careful not to come on contact with dangerous voltages while performing these procedures, and never work alone. With power applied to the unit and the cover removed, be aware that a rotating fan is operating.
1.2 GENERAL INTRODUCTION
This manual provides operation and service instructions for the Integrated L-Band Up/Dn Converter. The unit consists of a power supply, forced-air cooling system, microprocessor­based CCA (circuit card assembly) and control circuitry and the modules required for up and down conversion. It incorporates extensive monitor and control functions that are accessible from the front panel as well as through a remote serial bus. A general description of the front and rear panels is given in Sections 1.5 and 1.6. A description of the Keypad and Display can be found in Section 3.
The Integrated L-Band Up/Dn Converter is housed in an enclosure destined for mounting in a standard EIA 19-inch rack, requiring a
1.75-inch high vertical space.
1.3 PURPOSE OF EQUIPMENT
The Integrated L-Band Up/Dn Converter is a fully synthesized up and down converter covering 575 or 1000 MHz bandwidth receiving RF frequencies in up to 125 kHz steps. The unit incorporates extensive monitor and control functions that are accessible from the front panel as well as through a remote RS­232/422/485 bus.
The LT-3600 can be configured to accommodate various requirements involving an IF of 70 or 140 MHz, non-inverted or inverted spectrum, with standard or high­stability 10 MHz reference oscillator or any combination the user desires. Combined with jumper selectable and user programmable options, the LT-3600 is flexible to user requirements.
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Integrated L-Band Up/Dn Converter LT3600 CG-1309
1.4 SPECIFICATIONS
The specifications for the Integrated L-Band Up/Dn Converter are listed in Table 1-1, along with the mechanical dimensions.
1.5 FRONT PANEL
All the operating controls and indicators for the Integrated L-Band Up/Dn Converter are located on the front panel. The front panel is depicted in Figure 1-1. Alarm and level monitoring of the L-Band Up/Dn Converter CCA, an external LNB, and SSPB modules is accomplished through the front panel display and keboard interface.
1.6 REAR PANEL
The rear panel is depicted in Figure 1-2. It incorporates, from left to right, Grounding Lug (GND), Power Connector, Optional 10MHz high stability reference output (J1), 10 MHz
(J4), On/Off Switch for Dc output on J4 (SW2), Cooling Fans, Down Converter StarSwitch Interface (Opt.) (J5), SSPB monitor and control (J6), Remote Serial Interface (J7), Up Converter StarSwitch Interface (Opt.) (J8), IF In (J9), On/Off Switch for Dc output on J10 (SW3), L-Band Out (J10).
In the lower right hand side of the rear panel is a label that refers to the operation and maintenance manual and revision level that applies to this converter.
1.7 COOLING
Cooling of the equipment is achieved by pulling in cool air through the two side inlet grills. The heated air exits the equipment through the two rear panel mounted exhaust fans.
reference input (J2), IF Out (J3), L-Band In
Figure 1-1 Front Panel w/Keypad and LCD Display
Figure 1-2 Rear Panel
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Integrated L-Band Up/Dn Converter LT3600 CG-1309
1.8 Part Number Configuration
The Part Number Selection Chart shows configuration options that are set at the factory prior to shipment. The voltage output to J4 and J10 may be changed as required by the customer, however this requires removal of the cover and resetting internal jumper connections. This should be performed by qualified personnel.
1st Digit 2nd Digit 3rd Digit 4th Digit Base
Number
IF Operation L-Band Bias Voltage Ref. Oscillator
201667 - 1 70 MHZ 1 Std. 0 None 0 Std 10Mhz
2 140 MHz 2 Extend 1 D/C-22VDC
U/C-22VDC
2 D/C-22VDC
1 Hi Accuracy
10 MHz
U/C-15VDC
5th Digit 6th Digit 7th Digit L-Band Ports 10 MHZ Ref. Out StarSwitch Ready
0 SMA Female 0 No Output 0 No 1 N-Type Female 1 U/C & D/C 1 Yes 2 U/C Only
3 D/C Only Note: If connected to a StarSwitch, No Bias Voltage Output is allowed. Option Descriptions:
st
1
Digit – IF Frequency, Options 3 and 4 are set for inverted spectrum.
nd
2
Digit – Standard – 950 to 1525 MHz, Extended – 950 to 1950 MHz
rd
3
Digit – Bias voltage outputs are switchable in rear panel, if selected.
th
Digit – A reference oscilator is built in to the main board. The high accuracy unit is optional.
4
th
5
Digit – D/C Input and U/C Output Port Type (J4 & J10)
th
Digit – The output from the 10 MHz reference oscilator may be connected to either or both.
6
th
7
Digit – StarSwitch Ready includes output connections to J5 and J8 for control between the
Starswitch and the LT3600.
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Integrated L-Band Up/Dn Converter LT3600 CG-1309
Table 1-1 Integrated L-Band Specifications
UPCONVERTER
Input Frequency Range Input Impedance Input Level Range Output Frequency Range
Output Impedance Output Return Loss Conversion Gain Gain Linearity (over 10 dB) Gain Linearity (over 20 dB) Gain Stability (0 to +50 °C) Amplitude Response (over any 36 MHz) Amplitude Response (over 875 MHz) Output Power (1 dB GCP)
rd
Order Intermodulation (for 2 car. each at 0 dBm o/p)
3 Spurious (at 0 dBm output) Non-Carrier -60 dBm Transmit Spectrum Sense Noise Power Density -125 dBm/Hz
DOWNCONVERTER
Input Frequency Range Input Impedance Input Level Range Output Frequency Range Output Impedance Input Return Loss Conversion Gain Gain Linearity (over 10 dB) Gain Linearity (over 20 dB) Gain Stability (0 to +50 Frequency Response (over 36 MHz) Frequency Response (over 575 MHz) Output Power (1 dB GCP) Non-Carrier -55 dBm Spurious Over 52 to 88 MHz (at 0 dBm output)
Receive Spectrum Sense Noise Figure
°C)
50 to 90 MHz 50 Ohms
-20 to -40 dBm 950 to 1525 MHz
950 to 1950 MHz (Optional) 50 Ohms 18dB 10 to 30 dB (0.5 dB steps)
+
0.5 dB
1.0 dB
+
0.75 dB
+
0.75 dB
+
1.0 dB
+ +10 dBm (minimum)
-40 dBc
-55 dBc
Non-Inverting or Inverting
950 to 1950 MHz 50 Ohms
-75 to -35 dBm 50 to 90 MHz 50 Ohms 18dB 25 to 45 dB (0.5dB steps)
0.5 dB
+ +1 dB +1 dB
0.75 dB
+ +1 dB
10 dBm
+
-50 dBc Inverting or Non-Inverting 15 dB max
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Integrated L-Band Up/Dn Converter LT3600 CG-1309
Table 1-1 Integrated L-Band Specifications
OPTIONAL INTERNAL REFERENCE
Reference Frequency Stability (0 to +50
°C) Aging per Day + 1 x 10-9 Output Level (rear panel) + 12 dBm +2 dB Phase Noise @ 10 Hz -115 dBc/Hz 100 Hz -135 dBc/Hz 1 kHz -145 dBc/Hz 10 kHz < -150 dBc/Hz
UPCONVERTER and DOWNCONVERTER
Synthesizer Configuration
Tx Synthesizer and Rx Synthesizer Step Size Parameter Memory Storage L-Band Output Phase Noise: at 100 Hz Offset at 1 kHz Offset at 10 kHz Offset at 100 kHz Offset at 1 MHz Offset -106 dBc/Hz
INTERNAL REFERENCE
Reference Frequency Stability (0 to+50 °C) Reference Output Calibration
Reference Programmable Control Output Level (10 MHz on LB IN J4 coax) Output Level (10 MHz on LB OUT J10 coax) Output 2
EXTERNAL REFERENCE INPUT
Input Frequency Input Level
nd
Harmonic
Frequency Stability
CHASSIS PHYSICAL SIZE
Height 1.75 inches Depth 18 inches Width 19 inches Weight 12 lbs. max.
10.000 MHz + 2 x 10-8
Dual U/C and D/C with Independent Programmability
125 kHz Non-Volatile EEPROM
-66 dBc/Hz
-76 dBc/Hz
-86 dBc/Hz
-96 dBc/Hz
10.000 MHz 1 PPM
+
+
10 Hz
+
20 Hz
-2 dBm +
-2 dBm +
2 dB 2 dB
-40 dBc
10.000 MHz
0 to +13 dBm As Required
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Integrated L-Band Up/Dn Converter LT3600 CG-1309
Table 1-1 Integrated L-Band Specifications
INTERFACE AND CONNECTORS
Voltage (auto-ranging) Internal Electronics (Power)
StarSwitch Interface Connectors (Options)
Remote Serial Interface:
115/230 VAC + 25 watts
DB-15 (Female) DB-9 (Male)
15%
Standard: RS-422/RS-485 (J7)
External SSPB Monitor and Control (J6) DB-9 (Female) DC Output to LNB on J4 (coaxial) (Options) 22 VDC @ 0.5 amps (max)
DC Output to SSPB on J10 (coaxial) (Options) 22 or 15VDC @ 2.0 amps (max) Operational Temperature Range 0 to 50 °C
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Integrated L-Band Up/Dn Converter LT3600 CG-1309

SECTION 2 Installation

2.0 INTRODUCTION
This section defines the installation require­ments by which the Integrated L-Band Up/Dn Converter will meet the published specifications.
2.1 UNPACKING AND INSPECTION
Remove the unit from its shipping container and inspect for any damage sustained during shipment. Save the packing material for reshipment back to the factory or to another site. Report any damage to the shipping forwarder in accordance with required procedures.
2.2 INSTALLATION REQUIREMENTS
The LT-3600 is designed for mounting in a standard EIA 19-inch rack. The unit must be supported on the sides and space must be allowed at the side of the unit to permit the flow of cooling air. The unit should be installed in an environment that is within the environ­mental envelope described in Table 1-1. Primary power must be made available that is within the specified limits.
2.3 MECHANICAL INSTALLATION
The chassis is equipped with threaded inserts on either side for the installation of slides. Slides are not provided with the unit. The front panel is equipped with slots to accommodate user-supplied retaining screws.
CCAAUUTTIIOONN
MOUNTING THE UNIT BY ONLY THE FRONT PANEL WILL CAUSE EXTENSIVE DAMAGE.
2.4 ELECTRICAL CONNECTIONS
All electrical connections are made to the rear panel of the unit. The following describes the rear panel connectors and its interface requirements. The chassis ground is a #10-32 lug on the back panel.
2.4.1 Power Input
This connector is an IEC 320-C14 male and will accept any compatible mating connector. The power cord supplied as standard with the unit is equipped with a NEMA 5-15P male plug at the opposite end and is compatible with most 115 VAC supplies. The unit is manufact­ured with a Universal Input Power supply that will accept voltages in the range of 115 or 230 +/-15% VAC.
CCAAUUTTIIOONN
DAMAGE MAY RESULT IF THE INCORRECT VOLTAGE IS APPLIED TO THE UNIT.
2.4.2 L-Band Output (J10)
This connector is selectable as an SMA or N­Type female. The mate (not supplied) should be compatible with the 50-ohm coax used to connect to the system.
CCAAUUTTIIOONN
DC OUTPUT CURRENT MAY BE PRESENT ON J4 AND J10 DEPENDING ON POWER OPTIONS SUPPLIED FOR THE SSPB AND LNB.
2.4.3 IF Input (J9)
This connector is a BNC female. The male mate (not supplied) should be compatible with the 50-ohm coax used to connect to the system.
2.4.4 IF Output (J3)
This connector is a BNC female. The male mate (not supplied) should be compatible with the 50-ohm coax used to connect to the system.
2.4.5 L-Band Input (J4)
This connector is selectable as an SMA or N­Type female. The male mate (not supplied) should be compatible with the 50-ohm coax used to connect to the system.
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Integrated L-Band Up/Dn Converter LT3600 CG-1309
2.4.6 External 10 MHz Input (J2)
This connector is a BNC female. The male mate (not supplied) should be compatible with the 50-ohm coax used to connect to the system.
2.4.7 SSPB Interface (J6)
This connector is a 9-pin female miniature type “D” connector with standard #4-40 female screw-lock hardware mounting. The mating shell, pins, and strain relief are not supplied. Outputs are open collector and inputs have internal 1K full PS to +5V. The pin-out is as follows:
Pin 1 SSPB Band Control Output - (Low = Lo Band) Pin 2 Amplifier Fault - Open (Hi) = ALM Pin 3 Thermal Alarm Input – Open (Hi) = ALM Pin 4 Lock Alarm Input - Open (Hi) = ALM Pin 5 Up/Dn Converter Ground Pin 6 SSPB Attenuator/Enable Control – (Lo = Enable) Pin 7 Not Used Pin 8 SSPB Detector Input + Analog 0-5V Pin 9 SSPB Detector Input – Analog 0-5V
2.4.8 Remote Serial I/O Interface (J7)
This connector is a 9-pin male miniature type “D” connector with standard #4-40 female screw-lock hardware mounting. The mating shell, pins, and strain relief are not supplied. The electrical interface to this connector is for a standard RS-422/485 bus. This port may be reconfigured for RS-232 as shown below. For bus protocol requirements, refer to Section 3-3. The convention used for the signals is a logic Hi for Mark (Rest) and a logic Lo for Space. The pin-out is as follows for RS-422/485:
Pin 1 Rx ­Pin 2 Rx + Pin 3 Tx + Pin 4 Tx ­Pin 5 Ground Pin 6 Alarm Relay: Common Pin 7 Alarm Relay: Normally Closed Pin 8 Not Used
Pin 9 Alarm Relay: Normally Open
Port J7 may be reconfigured for RS-232 interface by changing the following jumpers locations on the main board inside the converter: Serial Port RS-422/485 RS-232 JP3 TXD SER 0 RXD SER 1 (Standard) JP3 TXD SER 1 RXD SER 0 JP2 Remove Install The pinout for RS-232 is as follows:
Pin 1 Not Used Pin 2 Rx + Pin 3 Tx + Pin 4 Not Used Pin 5 Ground Pin 6 Alarm Relay: Common Pin 7 Alarm Relay: Normally Closed Pin 8 Not Used
Pin 9 Alarm Relay: Normally Open
2.4.9 High Stability 10 MHz Reference Output (J1) (Optional Connector)
Jumpers On 1-2 5-6 7-8 9-10 11-12 17-18 3-4 5-6 7-8 9-10 11-12 19-20
Jumpers On 13-14 15-16
13-15 14-16
This connector is a BNC female. BNC jumper cable is supplied with this option for connection to J2.
2.5 OPERATIONAL CHECK
To verify that the basic functions of the unit are operational, it is recommended that the following check-out procedure be followed prior to final system integration. If there are any questions regarding performing the indicated operations, refer to Section 3-3.
2.5.1 Setup
Connect the unit to a primary power source and turn on the power switch at the front of the unit. Verify that the power led is illuminated. If the power led is not illuminated, check the power cord and fuse. A spare 3.15 A fuse is provided inside the power connector.
Switch the primary power off and connect the IF out, LB in, IF in and the LB out at the rear of the chassis to J3, J4, J9 and J10 respectively. Re-establish the primary source of power. The Front display will light and status will be displayed.
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Integrated L-Band Up/Dn Converter LT3600 CG-1309

SECTION 3 Operation

3.0 INTRODUCTION
The Up/Down Converter can be controlled from the front panel or remotely via a serial bus located on the rear panel of the converter. Various menus are available for EDIT and DISPLAY purposes.
See Figure 3-2 for a listing of the menus. Section 4 gives a complete description of the
bus commands and conventions for operating the converter remotely.
Red LED illuminates when any of the monitor functions in the converter are not within pre-defined parameters.
PLUGGED; NOT USED
UP/DOWN CONVERTER
ENT
LT3600
UC 1200.000 +25.0 dB DC 1300.000 +35.0 dB
ALARM
2 4 3 5
6
8 9 7 0
LCL
ENT
MENU
MENU
MONITOR
IF RF
UC 1200.000 +25.0 dB DC 1300.000 +35.0 dB
THE DISPLAY WINDOW SHOWS THE
VARIOUS SETTINGS FOR THE UNIT.
CONTROL AND STATUS MENUS
CAN BE VIEWED BY USING THE UP
AND DOWN MENUS KEYS.
USED TO MAKE FUNCTIONAL SELECTIONS WHEN IN ANY OF THE SET MENUS. THESE KEYS MOVE A CURSER UNDERLINE LEFT OR RIGHT TO ENTER NUMERICAL DATA FROM THE 0-9 KEYS.
MENU
USED TO SCROLL THE MENU DISPLAY UP AND DOWN.
MENU
0
USED FOR ENTERING NUMERICAL DATA FOR VARIOUS PARAMETER SETTINGS. THE APPLICABLE NUMBER IS ENTERED AT THE CURSER UNDERLINE AND THEN IS PRESSED TO ACCEPT THE CHANGE.
9
ENT
PRESSING THIS BUTTON
TOGGLES BETWEEN EDIT
LCL
AND DISPLAY MODE.
PRESSING THIS BUTTON CHANGES THE PARAMETERS
ENT
ENTERED WHEN IN ANY OF THE EDIT MENUS. IF THE PARAMETERS ARE CHANGED WITH THE NUMERICAL KEYPAD, BUT IF THIS BUTTON IS NOT PRESSED, THE PARAMETER UNDERLINED WILL NOT CHANGE.
Figure 3-1 Front Panel Controls and Indicators
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Integrated L-Band Up/Dn Converter LT3600 CG-1309
DISPLAY EDIT
RefOsc: OK Ofst:127 Slope Factor: 0 dB
LCL
RefOsc: OK Ofst: 127 Slope Factor: 0 dB
REFERENCE STATUS AND CONTROL/ SLOPE FACTOR SET
Unit Address: xx xx = 422 Mode
LCL
Unit Address: xx xx = 422 Mode
RS 485 ADDRESS AND STATUS
Brd SN 1234 20/12/04 S/W:v7.70 Temp: 32 C
BOARD STATUS
Front Panel SW v5.20 FP Alarm Tone: Muted
SOFTWARE VERSION AND ALARM CONTROL
MENU
Front Panel SW v5.20 FP Alarm Tone: On
LCL
STARSW: OK ON
MODE: Auto
LCL
STARSW: OK OFF
MODE: STBY
STARswitch MODE, AND ALARM CONTROL
UC 1200.000 +25.0 dB DC 1300.000 +35.0 dB
LCL
UC 1000.250 +15.0 dB DC 1500.625 +30.0 dB
DEFAULT MENU FREQUENCY AND
GAIN SETTINGS
UC: Ovr State: On DC: Low State: Muted
LCL
UC: Ovr State: On DC: OK State: On
UP/DN CONVERTER STAT U S AN D M U TE CONTROL
MENU
UC Lvl: +1 dBm DC Lvl: -25 dBm
DETECTOR LEVELS
SSPB: Muted Lck: Bad Amp: OK Therm: N/A
LCL
SSPB: Muted Lck: Bad Amp: OK Therm: Act
SSPB STATUS AND ALARM MASK CONTROL
LNB: OK Lvl: 380 mA UC: Normal DC: Normal
LCL
LNB: Act Lvl: 000 mA UC: Invert DC: Normal
LNB AND CONVERTER STATUS
MENU BUTTONS TOGGLE ALARMS FROM ACTIVE TO MUTED STATES WHEN IN
MENU
EDIT MODE
SSPB: Muted Lck: Bad Amp: OK Therm: Act
MENU
Figure 3-2 Menu Listing
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Integrated L-Band Up/Dn Converter LT3600 CG-1309
ENTER KEY RECALLS MEMORY TO ACTIVE
MENU
MENU
UC 0950.000 +10.0 dB DC 1525.000 +30.0 dB
ENT
Make Satellite: 0
Active? (Yes/No) No
0
HIT ANY KEY (0-9) Example (KEY 0)
EDIT
MENU
MENU
MENU
ESCAPES TO ADJACENT MENU WITHOUT RECALL
UC0 1200.000 +20.0 dB DC0 1200.000 +30.0 dB
1
UC1 1000.125 +30.0 dB DC1 1500.125 +45.0 dB
ENT
UC0 1200.000 +20.0 dB
LCL
CONFIRM AND STORE CHANGE TO EACH FIELD AND LEAVE EDIT MODE AFTER LAST FIELD
DC0 1200.000 +30.0 dB
ENT
MENU
SELECT MENU ARROWS UP OR DOWN TO
MENU
MENU
SELECT MENU ARROW UP FOR POSITIVE GAIN AND MENU ARROW DOWN FOR NEGATIVE GAIN WHEN CURSOR IS ACTIVE AT GAIN SIGN
SCROLL 125 KHZ STEP SIZE WHEN CURSOR IS ACTIVE AT .000
UC9 1500.875 +25.0 dB DC9 1300.875 +35.0 dB
Figure 3-3 Satellite Memory
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Integrated L-Band Up/Dn Converter LT3600 CG-1309
3.1 StarSwitch Operation
The LT3600 UP/DOWN Converter may be used in conjunction with the StarSwitch to provide redundancy switch over operations if configured as StarSwitch Ready. The following modes of operation may be selected.
3.1.1 Auto Mode
Upon reaching the StarSwitch Menu the information shown in Figure 3-4 will be displayed. The Information Window can have three selections, AUTO, STBY, or ON. The converter’s default is AUTO. Any of the three selections stated previously can be made, and will be activated when the ENTER key is pressed.
If a particular converter is in the AUTO mode, and an alarm is activated, it will be backed up by the backup converter if there are no other alarms in the system. REMEMBER: ONE AND ONLY ONE ALARM IN THE SYSTEM CAUSES A SWITCHOVER.
STARSW: OK ON
MODE: AUTO
Figure 3-4 StarSwitch Display – Auto Selection
3.1.2 StandBy Mode
When STBY has been selected, the display will change to the display shown in Figure 3-5a. In this mode the converter with this selection will be backed up if there are no other alarms in the system. Upon switchover to the backup converter, the display will change to Figure 3-5b indicating STBY in the Activity Window. Under normal operation the Summary Alarm would only be ON if there were another alarm activated on the converter, however in this case, the Summary Alarm is forced to be ON regardless of the state of the other alarms. The operator can still view the state of alarms via the other menus, i.e. if an alarm has been activated it will be displayed, however the Summary Alarm will always be ON.
3.1.3 ON Mode
STARSW: OK ON MODE: STBY
Figure 3-5 StarSwitch Display – STBY Selection
STARSW: OK STBY
MODE: STBY
When ON Mode has been selected, the display will change to the display shown in Figure 3-6. This mode is the opposite to the STBY mode, in that the Summary Alarm is turned OFF, so even if there was a valid alarm, the converter would not show a Summary Alarm. As in the STBY mode the operator can still view the state of the alarms via the other menus, i.e. if an alarm has been activated it will be displayed, however the Summary Alarm will be OFF.
NOTE: If the converter is already in STBY mode, a change to the ON mode will not occur, unless there is no alarm in the system.
STARSW: OK ON
MODE: ON
Figure 3-6 StarSwitch Display – ON Selection
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Integrated L-Band Up/Dn Converter LT3600 CG-1309
3.1.4 Backup Converter Operation
The Backup Converter must be programmed to store all of the Converter Frequencies and Gains in the system, in its Satellite Memory Locations, corresponding to the Converter Number (1 to 8) labeled on the StarSwitch Interface cables. Figure 3-7 shows the Backup Converter in Auto Mode ready to Backup any converter in the system and after backing up Converter 2.
STARSW: OK ON 2
MODE: Auto
3.1.5 StarSwitch Alarm
STARSW: OK STBY MODE: Auto
Figure 3-7 StarSwitch Display – Backup Converter
The StarSwitch Alarm is displayed as “Fault” in the StarSwitch Menu Window on the Backup Converter only. A fault indicates either an internal StarSwitch Unit failure or a Power Off condition detected on any one of the Converters in the system. The StarSwitch Alarm however, does not activate the Summary Alarms, and the Backup Converter will still backup an Online Converter when it is powered down. Figure 3-8 shows the Backup Converter display after Converter 1 has been powered off and the Backup has taken over.
Figure 3-8 StarSwitch Display – Fault Indication
3.1.6 Dual StarSwitch Operation
STARSW: Fault ON 1
MODE: Auto
Each LT3600 Converter has two StarSwitch Interface connectors (J8, Main and J5, Secondary) to control two StarSwitch Units, for systems where switching for both Up and Down Converter sections is required. The two interfaces are not independent as an alarm in either Up or Down Converter system will cause both to switch to the backup converter. This is necessary since a failed unit, including both Up and Down Converter sections, will need to be removed for service. Ensure that J8, Main Interface, is used if only one StarSwitch Unit is configured in the system.
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Integrated L-Band Up/Dn Converter LT3600 CG-1309
3.2 Front Panel Alarm Settings
Menu Page
Active Modes
Mask (Default)
Comment
1) Starswitch
Front Panel
2) Alarm Tone
Reference
3) Oscillator
4) LNB
Lck
5) SSPB
Amp
Therm
Auto ON STBY
Muted On
N/A Act OK Bad
N/A Act OK Bad
N/A Act OK Bad
N/A Act OK Bad
N/A Act OK Bad
Auto
Muted
N/A
N/A
N/A
N/A
N/A
Must select "Auto" Mode when Starswitch is not present. Forces summary alarm to OFF (see Starswitch operation). Forces summary alarm to ON (see Starswitch operation).
Mutes audio tone when in alarm. (has no effect on Summary Alarm condition). Audio Tone will indicate an Alarm.
Disable Alarm if External Reference Oscillator is not present. Activate for External Reference Alarm (select in Edit Mode). External Reference is detected (Active Mode) External Reference is not detected (Active Mode).
Disable Alarm if LNB (or BDC) is not present. Activate for LNB supply current Alarm (select in Edit Mode). LNB supply current is within acceptable range (Active Mode) LNB supply current is not within acceptable range (Active Mode)
Disable Alarm if SSPB (or BUC) is not present. Activate for SSPB, PLL Alarm (select in Edit Mode). SSPB, PLL is Locked (Active Mode) SSPB, PLL is not Locked (Active Mode)
Disable Alarm if SSPB (or BUC) is not present. Activate for SSPB, Amplifier Summary Alarm (select in Edit Mode). SSPB, Amplifier Summary Alarm is OFF (Active Mode) SSPB, Amplifier Summary Alarm is ON (Active Mode)
Disable Alarm if SSPB (or BUC) is not present. Activate for SSPB, Thermal Alarm (select in Edit Mode). SSPB, Thermal Alarm is OFF (Active Mode) SSPB, Thermal Alarm is ON (Active Mode)
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Integrated L-Band Up/Dn Converter LT3600 CG-1309

SECTION 4 Serial Command Set

4.0 GENERAL
The standard Up/Dn Converter is controlled via a rear panel serial link (RS-422/485)(Reconfigurable to RS-232). With the front panel control, a user can operate the L-Band Up/Dn Converter from its front panel as well as from the serial link. This section describes the format for the ASCII serial control as well as front panel operation.
Note: Some commands and status strings have been changed as of Software Release v7.70 (main board) and v5.20 (front panel). Units marked with “Rev A” on the rear panel support the new protocol.
4.1 LT-3600 SERIAL INTERFACE
The serial interface format to the Up/Dn Converter for RS-422 is identical to the RS-485 format except that under RS-485, the format includes an address field (aa in the format below).
4.2 COMMUNICATION PROTOCOL
Baud Rate: 9600 Parity: None Data Bits: Eight Start Bits: One Stop Bits: One
4.2.1 General Data Format
{aaCND…}
Where: { = Start byte aa = 2 character address (00 to 50, remote interface only) C = 1 character, either C (Command) or S (Status) N = 1 number 0 to 9, A,B,C Command or Status Number D = 1 or more Data characters (depending on command) } = Stop byte
Note: The address is only used in the RS-485 mode when having several addressable units communicating with one station.
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Integrated L-Band Up/Dn Converter LT3600 CG-1309
4.3 COMMANDS
4.3.1 Set UP/Converter Frequency
{aaC1xxxxx} Where xxxx(x) = First 4 numeric data characters Range: 0950 to 1525 (MHz) for Std. Band units Range: 0950 to 1950 (MHz) for Extended Band units Where (xxxx)x = Fifth character is fractional MHz as follows 0 = 0.0 MHz 1 = +0.125 MHz 2 = +0.250 MHz 3 = +0.375 MHz 4 = +0.500 MHz 5 = +0.625 MHz 6 = +0.750 MHz 7 = +0.875 MHz Note: If only four charactors entered, 0 is assumed as fifth digit.
4.3.2 Set DOWN/Converter Frequency
{aaC2xxxxx} Where xxxx(x) = First 4 numeric data characters Range: 0950 to 1950 (MHz) for Std and Extended Band units Where (xxxx)x = Fifth character is fractional MHz as follows 0 = 0.0 MHz 1 = +0.125 MHz 2 = +0.250 MHz 3 = +0.375 MHz 4 = +0.500 MHz 5 = +0.625 MHz 6 = +0.750 MHz 7 = +0.875 MHz Note: If only four charactors entered, 0 is assumed as fifth digit.
4.3.3 Set UP/Converter Gain
{aaC3xxxx} Where xxxx = 4 numeric data characters Range: +100 to +300 (+10.0 dB to +30.0 dB) in 0.5 dB steps
4.3.4 Set DOWN/Converter Gain
{aaC4xxxx} Where xxxx = 4 numeric data characters Range: +250 to +450 (+25.0 dB to +45.0 dB) in 0.5 dB steps
4.3.5 Set Internal 10 MHz Ref Oscillator Offset
{aaC5xxx} Where xxx = 3 numeric data characters Range: 000 to 255 (0 through 10 volts)
4.3.6 Enable SSPB
{aaC6x} Where x = 0 to disable SSPB control and x = 1 to enable SSPB control
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Integrated L-Band Up/Dn Converter LT3600 CG-1309
4.3.7 DOWN/Converter (LNB) Spectrum Control
{aaC7x} Where x = 0 for Non-Inverting spectrum and x = 1 for Inverting spectrum
4.3.8 UP/Converter Spectrum Control
{aaC7TXz} Where z = 0 for Non-Inverting spectrum and z = 1 for Inverting spectrum
4.3.9 SSPB Band Control
{aaC8x} Where x = 0 for SSPB Std.Band control and x = 1 for SSPB Extended Band control
4.3.10 Set SSPB Gain (Attenuation)
{aaC9xx) Where xx = 2 data characters (sign and number) Range: –8 to –0 (-8 to 0 dB) or ++ for full on.
4.3.11 Enable UP/Converter
{aaCAx} Where x = 0 to disable or mute the transmitter and x = 1 to enable or un-mute the transmitter
4.3.12 Enable DOWN Converter
{aaCBx} Where x = 0 to disable or mute the DOWN/Converter and x = 1 to enable or un-mute the DOWN/Converter
4.3.13 Satellite Memory Store
{aaCSSxyyyyyyyyyy} Where x = Number from 0 to 9 (memory position) y = ASCII character making up to a 10
Stores current UP and DOWN Converter Frequencies and Gains to storage position specified along with a Text name for that satellite is so desired.
character name for the satellite
4.3.14 Satellite Memory Recall
{aaCSRx} Where x = Number from 0 to 9 (memory position) Recalls saved satellite settings of Frequencies and Gains to the current set-up.
4.3.15 StarSwitch Mode Select
{aaCWx} Where x = A – Auto Mode x = S – Standby Mode x = O – ON Mode
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Integrated L-Band Up/Dn Converter LT3600 CG-1309
4.4 STATUS REQUESTS
4.4.1 Command Status
{aaS1} Returns: {aaS1bbbbccccddddeeeefffUL}
Where bbbb = Up/Converter Frequency (as above) cccc = Down/Converter Frequency (as above) dddd = Up/Converter Gain eeee = Down/Converter Gain fff = Ref. Osc. Offset U = 0 for Non-Inverting Up/Converter, 1 for Inverting L = 0 for Non-Inverting LNB, 1 for inverting
4.4.2 Fractional Frequency Status
{aaSF} Returns: {aaSFxy}
Where: x = U/C Fractional Frequency (0 to 7, in 125 kHz increments) Where: y = D/C Fractional Frequency (0 to 7, in 125 kHz increments)
4.4.3 Level Status
{aaS2} Returns: {S2MLffppeett}
Where: M = ASCII-hex Char. MSN of bitmapped status F indicates no alarm in group D7 – Low = SSPB Lock Alarm D6 – Low = SSPB Thermal Alarm D5 – Low = SSPB Amp Alarm D4 – Low = LNB Alarm Where: L = ASCII-hex Char. LSN of bitmapped status F indicates no alarm in group D3 – Low = Ext. 10 MHz Ref. Osc. Alarm D2 – Low = Down/Converter Synthesizer Alarm D1 – Low = Up/Converter Synthesizer Alarm D0 – Low = Summary Alarm Where: ff = 2 Chars., Forward SSPB Power Detection Range: 00 or 16 to 40 (dBm) (00 = No SSPB) Where: pp = 2 Chars., L-Band Output Level Detection Range: 25 to +5 (-25 to +5 dBm) Where: rr = 2 Chars., IF Output Level Detection Range: 25 to +5 (-25 to +5 dBm) Where: tt = 2 Chars., on board Temperature Monitor Range: 00 to 70 (0 to 70°C)
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Integrated L-Band Up/Dn Converter LT3600 CG-1309
4.4.4 L-Band Status
{aaS3} Returns: {S3bbCddTReeN}
Where: bb = 2 Chars., LNB current Detection Range: 00 to 99 ( 0 - 990 mA) C = 1 Character, SSPB Band Control Range: 0 = low band, 1 = high band dd = 2 Characters, SSPB Gain Range: –8 to –0 or ++ (dB) ++ = Full On T = 1 Character, Up/Converter enable Range: 0 = disable, 1 = enable R = 1 Character, Down/Converter enable Range: 0 = disable, 1 = enable ee = 2 Character, SSPB current detection Range: 00 to 30 (0 – 3.0 A) N = 0 for SSPB Disable, 1 SSPB Enable
4.4.5 Set Cable Slope Factor
{aaFx} Where: x = numeric character Range: 0 to 5 (dB/500 MHz)
4.4.6 Query Cable Slope Factor
{aaF} Returns: {F = x}
Where: x = numeric character Range: 0 to 5 (dB/500 MHz)
4.4.7 Serial Number Read
{aaID} Returns: {aaIDyymmddxxxx}
Where : yy = last 2 digits of year mm = month dd = day xxxx = 4 digit sequence number
4.4.8 Query Software Version
{aaV} Returns: {aaVr.ii}
Where: r = Software Release number (1 – 9) ii = Software Issue number (00 – 99)
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Integrated L-Band Up/Dn Converter LT3600 CG-1309
4.4.9 Query Card Type
{aaZ} Returns: {aaZxx}
Where: xx = L-Band Card Type (1 – 8) 10 = 70 MHz IF, Std. Band Unit (SBU) 20 = 140 MHz IF, SBU 11 = 70 MHz IF, Ext Band Unit (EBU) 21 = 140 MHz IF, EBU 50 = 70 MHz IF, SBU with Inv. Up/Converter Spectrum 60 = 140 MHz IF, SBU with Inv. Up/Converter Spectrum 51 = 70 MHz IF, EBU with Inv. Up/Converter Spectrum 61 = 140 MHz IF, EBU with Inv. Up/Converter Spectrum
4.4.10 Satellite Memory Status Query
{aaSSx} Where x = Number from 0 to 9 (memory position) Returns: {aaSSxbbbbccccddddeeee}{aayyyyyyyyyy}
Where: x = The number of the Satellite Memory location bbbb = Frequency for the Up/Converter cccc = Frequency for the Down/Converter dddd = Gain for the Up/Converter eeee = Gain for the Down/Converter y = ASCII character making up to a 10 character name for the satellite
4.4.11 Satellite Fractional Frequency Status
{aaSGn} Where: n = Number from 0 to 9 (memory position) Returns: {aaSGnxy}
Where: n = The number of the Satellite Memory position. x = U/C Fractional Frequency (0 to 7, in 125 kHz increments) y = D/C Fractional Frequency (0 to 7, in 125 kHz increments)
4.4.12 StarSwitch Status
{aaSW} Returns: {aaSWxnyz}
Where: x = O – ON (Current Status) X = S – STBY (Current Status) n = – No Converter Backed Up, (Space) n = 1 – Converter 1 Backed Up, (1 to 8) y = A – Auto Mode y = S – STBY Mode y = O – ON Mode z = G – SW ALM Green (Normal) z = R – SW ALM Red (Fault)
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Integrated L-Band Up/Dn Converter LT3600 CG-1309
Appendix A Manual Revision History
C – Add Starsw menu M. Neely 2-03-05 D. Snyder 2-03-05 6323
B – Add Satellite Menu Info M. Neely 10-14-05 D. Snyder 10-5-05 6129
A – Gain signs M. Neely 8-15-05 D. Snyder 8-15-05 6020
- Original Release M. Neely 11-5-04 D. Snyder 11-5-04 5442
Rev. No/change Revised By Date Approved By Date ECO#
Appendix B CCA Software Revision History
7.72 StarSwitch Menu and Status Update
7.71 Added RS-485 address to Fractional Frequency Status
7.70 High/Low gains with signs, M&C changes (July 05)
7.56 1950 MHz limit, invert ref. osc. alarm (May 05)
7.55 Freq. and gain limits, fixed starswitch 485 address (Feb. 05)
7.54 Original (Jan. 05)
Appendix C Display Panel Software Revision History
5.22 StarSwitch Alarm display message is now "Fault" was "Bad".
5.21 Reversed Relay Alarm - now energized in no alarm condition.
5.20 Gain signs added, U/C Spectrum invert (July 05)
5.03 Fix Display errors (Jan. 05)
5.01 Original (Dec. 04)
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