Comtech EF Data MBT-4000B User Manual

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MBT-4000B

Multi-Band Transceiver System

Installation and Operation Manual

IMPORTANT NOTE: The information contained in this document supersedes all previously published

information regarding this product. Product specifications are subject to change without prior notice.

Part Number MN/MBT4000.IOM - Revision 0

Comtech EF Data is an ISO 9001

Registered Company.

MBT-4000B

Multi-Band Transceiver System

Installation and Operation Manual

Part Number MN/MBT4000B.IOM

Revision 0

June 2, 2006

Comtech EF Data, 2114 West 7th Street, Tempe, Arizona 85281 USA, 480 333 2200, FAX 480 333 2161.

CUSTOMER SUPPORT

Contact the Comtech EF Data Customer Support Department for:

 Product support or training

 Information on upgrading or returning a product

 Reporting comments or suggestions concerning manuals

A Customer Support representative may be reached at:

Comtech EF Data Attention: Customer Support Department 2114 West 7th Street Tempe, Arizona 85281 USA

480 333 2200 (Main Comtech EF Data Number) 480 333 4357 (Customer Support Desk) 480 333 2161 FAX

or, E-Mail can be sent to the Customer Support Department at:

service@comtechefdata.com

To return a Comtech EF Data product (in-warranty and out-of-warranty) for repair or replacement:

1. Request a Return Material Authorization (RMA) number from the Comtech EF Data Customer Support Department.

2. Be prepared to supply the Customer Support representative with the model number, serial number, and a description of the problem.

3. To ensure that the product is not damaged during shipping, pack the product in its original shipping carton/packaging.

4. Ship the product back to Comtech EF Data. (Shipping charges should be prepaid.)

For more information regarding the warranty policies, see Warranty Policy, p. viii.

CHAPTER 1. INTRODUCTION ................................................................................ 1–1

1.1 Overview ......................................................................................................................... 1–1

1.2 Functional Description .................................................................................................. 1–1

1.3 Specification.................................................................................................................... 1–3

1.3.1 Summary of Specifications.......................................................................................... 1–3

1.3.2 Dimensional Envelope................................................................................................. 1–4

1.4 System Overview............................................................................................................ 1–5

CHAPTER 2. INSTALLATION.................................................................................. 2–1

2.1 Unpacking and Inspection............................................................................................. 2–1

2.2 Installation and Operation............................................................................................ 2–1

2.2.1 COMM (J2) Pin Connections ...................................................................................... 2–2

2.2.2 IF Switch (J4) Pin Connections ................................................................................... 2–3

2.2.3 Redundant Loop (J7) Pin Connections ........................................................................ 2–3

2.2.4 AUX COMM 2 (J8) Pin Connections.......................................................................... 2–4

2.2.5 RF Switch (J10) Pin Connections................................................................................ 2–5

CHAPTER 3. SYSTEM OPERATION ....................................................................... 3–1

3.1 Description...................................................................................................................... 3–1

3.2 Block Up Converter (BUC-4000).................................................................................. 3–2

3.3 LO, Mix and Spectrum Settings(LNB) ........................................................................ 3–3

3.2.1 C-Band ......................................................................................................................... 3–3

3.2.2 Ku-Band....................................................................................................................... 3–4

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CHAPTER 4. REDUNDANT CONFIGURATION ...................................................... 4–1

4.1 General............................................................................................................................ 4–1

4.2 Dual-Base (Chain) Redundancy Operation................................................................. 4–2

4.3 External Fault Monitoring ............................................................................................ 4–3

4.4 LNA Power Supply Current Monitoring..................................................................... 4–3

4.5 Gain Equalization of Redundant Units........................................................................ 4–4

4.6 LED Status Indicators ................................................................................................... 4–4

4.7 Redundancy Systems Check ......................................................................................... 4–5

APPENDIX A. REMOTE CONTROL ....................................................................... A–1

APPENDIX B. FAULTS/EVENTS............................................................................ B–1

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Figures

Figure 1-1. MBT-4000B Outdoor Multi-Band RF Transceiver ................................................ 1–1

Figure 1-2. MBT-4000B Typical Application........................................................................... 1–2

Figure 1-3. MBT-4000B Dimensional Envelope....................................................................... 1–4

Figure 1-4. Typical, Chain Switched, Redundant Diagram....................................................... 1–5

Figure 4-1. Dual-Base (Chain) Redundancy Operation............................................................. 4–2

Tables

Table 2-1. PWR IN (J1) Pin Connections.................................................................................. 2–1

Table 2-2. COMM (J2) Pin Connections................................................................................... 2–2

Table 2-3. IF Switch (J4) Pin Connections................................................................................ 2–3

Table 2-4. Redundant Loop (J7) Pin Connections..................................................................... 2–3

Table 2-5. AUX COMM 1 (J9) Pin Connections ...................................................................... 2–4

Table 2-6. RF Switch (J10) Pin Connections............................................................................. 2–5

Table 3-1. For C-Band: LO and MIX Information for Demodulator and LNB ........................ 3–3

Table 3-2. For Ku-Band: LO and MIX Information for Demodulator and LNB, KU-Band..... 3–4

Table B-1. MBT-4000B Summary Faults .................................................................................B–2

Table B-2. MBT-4000B Configurable Summary Faults ...........................................................B–2

Table B-3. MBT-4000B Informational Events..........................................................................B–2

Table B-4. BUC-4000 Summary Faults.....................................................................................B–3

Table B-5. BUC-4000 Informational Events .............................................................................B–3

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ABOUT THIS MANUAL

This manual provides installation and operation information for the Comtech EF Data MBT-4000B, Multi-Band Transceiver System. This is a technical document intended for earth station engineers, technicians, and operators responsible for the operation and maintenance of the MBT-4000B, Multi-Band Transceiver System.

CONVENTIONS AND REFERENCES

CAUTIONS AND WARNINGS

Indicates information critical for proper equipment function.

IMPORTANT

CAUTION

Indicates a hazardous situation that, if not avoided, may result in minor or moderate injury. CAUTION may also be used to indicate other unsafe practices or risks of property damage.

Indicates a potentially hazardous situation that, if not avoided, could result in

WARNING

death or serious injury.

METRIC CONVERSION

Metric conversion information is located on the inside back cover of this manual. This information is provided to assist the operator in cross-referencing non-Metric to Metric conversions.

TRADEMARKS

All product names mentioned in this manual may be trademarks or registered trademarks of their respective companies and are hereby acknowledged.

RECOMMENDED STANDARD DESIGNATIONS

Recommended Standard (RS) Designations are equivalent to the designation of the Electronic Industries Association (EIA). Reference to only one designator is used in the document

REPORTING COMMENTS OR SUGGESTIONS CONCERNING THIS MANUAL

Comments and suggestions regarding the content and design of this manual will be appreciated. To submit comments, please contact the Comtech EF Data Customer Support Department.

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EMC COMPLIANCE

This is a Class A product. In a domestic environment, it may cause radio interference that requires the user to take adequate protection measures.

EN55022 COMPLIANCE

This equipment meets the radio disturbance characteristic specifications for information technology equipment as defined in EN55022.

EN50082-1 COMPLIANCE

This equipment meets the electromagnetic compatibility/generic immunity standard as defined in EN50082-1.

FEDERAL COMMUNICATIONS COMMISSION (FCC)

This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to Part 15 of the FCC rules. These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment.

This equipment generates, uses, and can radiate radio frequency energy. If not installed and used in accordance with the instruction manual, it may cause harmful interference to radio communications. Operation of this equipment in a residential area is likely to cause harmful interference; in which case, users are required to correct the interference at their own expense.

Note: To ensure compliance, properly shielded cables for DATA I/O shall be used. More

specifically, these cables shall be shielded from end to end, ensuring a continuous shield.

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SAFETY COMPLIANCE

EN 60950

Applicable testing is routinely performed as a condition of manufacturing on all units to ensure compliance with safety requirements of EN60950.

This equipment meets the Safety of Information Technology Equipment specification as defined in EN60950.

LOW VOLTAGE DIRECTIVE (LVD)

The following information is applicable for the European Low Voltage Directive (EN60950):

<HAR> Type of power cord required for use in the European Community.

CAUTION: Double-pole/Neutral Fusing.

ACHTUNG: Zweipolige bzw. Neutralleiter-Sicherung.

International Symbols:

Symbol Definition Symbol Definition

Alternating Current.

Fuse.

Protective Earth.

Chassis Ground.

Note: For additional symbols, refer to “Cautions” listed earlier in this preface.

Multi-Band Transceiver System Revision 0 Preface MN/MBT4000B.IOM

WARRANTY POLICY

This Comtech EF Data product is warranted against defects in material and workmanship for a period of 2 years from the date of shipment. During the warranty period, Comtech EF Data will, at its option, repair or replace products that prove to be defective.

For equipment under warranty, the customer is responsible for freight to Comtech EF Data and all related custom, taxes, tariffs, insurance, etc. Comtech EF Data is responsible for the freight charges only for return of the equipment from the factory to the customer. Comtech EF Data will return the equipment by the same method (i.e., Air, Express, Surface) as the equipment was sent to Comtech EF Data.

LIMITATIONS OF WARRANTY

The foregoing warranty shall not apply to defects resulting from improper installation or maintenance, abuse, unauthorized modification, or operation outside of environmental specifications for the product, or, for damages that occur due to improper repackaging of equipment for return to Comtech EF Data.

No other warranty is expressed or implied. Comtech EF Data specifically disclaims the implied warranties of merchantability and fitness for particular purpose.

EXCLUSIVE REMEDIES

The remedies provided herein are the buyer's sole and exclusive remedies. Comtech EF Data shall not be liable for any direct, indirect, special, incidental, or consequential damages, whether based on contract, tort, or any other legal theory.

DISCLAIMER

Comtech EF Data has reviewed this manual thoroughly to provide an easy-to-use guide to your equipment. All statements, technical information, and recommendations in this manual and in any guides or related documents are believed reliable, but the accuracy and completeness thereof are not guaranteed or warranted, and they are not intended to be, nor should they be understood to be, representations or warranties concerning the products described. Further, Comtech EF Data reserves the right to make changes in the specifications of the products described in this manual at any time without notice and without obligation to notify any person of such changes.

If you have any questions regarding the equipment or the information in this manual, please contact the Comtech EF Data Technical Publications Department at: tpubs@comtechefdata.com

Chapter 1. Introduction

Figure 1-1. MBT-4000B Outdoor Multi-Band RF Transceiver

1.1 OVERVIEW

This manual provides instructions on the installation, operation and maintenance of the MBT-4000B, Multi-Band Transceiver System (MBT-4000B), manufactured by Comtech EF Data (CEFD). Specifications for this model are included in this section.

1.2 FUNCTIONAL DESCRIPTION

The MBT-4000B is designed to perform the following functions:

• LNB support for C-, X-, or Ku- RF to L-Band down conversion

• L-Band to C-, X-, or Ku- RF up conversion

• RF Band switching in minimal time without requiring tools

• Easy expansion for providing a redundant system or other frequency bands

• System status verification via LEDs located behind a removable cover

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Multi-Band Transceiver System Revision 0 Introduction

Note:

L-Band, 10 MHz, DC

Bias.

FROM LNB X

J12

BIAST

1:1 MBT SUBSYSTEM

To L-Band MODEM

J11

TO SSPA X

TO RF

SWITCH

J10

FROM SSPA X

BUC X (SLOT 1)

J9 J7 J3 J5

UNIT X COMM

REDUNDANCY

CONNECTION

SWITCH X IF

From L-Band MODEM

Figure 1-2. MBT-4000B Typical Application

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1.3 SPECIFICATIONS

1.3.1 SUMMARY OF SPECIFICATIONS

BUC-4000 ODU Characteristics

Input Frequency Range 950–2000 MHz, 125 kHz steps

(1 kHz optional)

Output Freq By Model:

BUC-4000C

BUC-4000X

BUC-4000Ku

BUC-4000Ka

Input/Output Impedance

Input Return Loss 15 dB minimum Operating Humidity 5 to 95%, non-condensing

Output Return Loss 18 dB minimum Non-Operating

Input Connector Type ‘N’ – Female

Output Connector Type ‘N’ – Female (C, X, and Ku) ODU: MBT-4000B

Gain 15 dB nominal at minimum

User Attenuation Range 0 to 10 dB Size Refer to Figure 1-3.

Output Power, P1dB +10 dBm minimum

Third Order Intercept +20 dBm minimum

Carrier Spurious -60 dBc

Non-Carrier Spurious -60 dBm

External Reference

5850-6650 MHz

7900-8400 MHz

13.75-14.50 GHz

30.00-31.00 GHz

27.50-28.50 GHz (optional)

28.50-29.50 GHz (optional)

29.50-30.10 GHz (optional)

50 Ω

attenuation

Input, either 5 to 10 MHz ±5 dBm optional

Specifications BUC-4000 ODU

Characteristics

Environmental:

Operating Temperature

ODU: BUC-4000

Operating Altitude 10,000 feet above sea level

Temperature

Physical:

Prime Power 90 to 260 VAC, 47 to 63 Hz

Specification

-40° to +50° C

(-40° to 122°F)

-50° to + 75°C

(58° to +160°F)

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1.3.2 D

IMENSIONAL ENVELOPE

Figure 1-3. MBT-4000B Dimensional Envelope

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1.3 SYSTEM OVERVIEW

The transceiver is constructed in a modular configuration. Common to the configuration for any frequency band of operation is a base module, which provides the M&C, Power Supply, and Reference function. A Band-specific BUC module is mounted to the base module with clip-type fasteners. An internal bias tee provides a 10 MHz reference and bias voltage for an external LNB.

RF SWITCHES

SHOWN IN POSITION

REJECT

FILTER

REJECT

FILTER

WAVEGUIDE

LOAD

WAVEGUIDE

SWITCH 2 RF

SWITCH 1 RF

LNB2

LNB1

AUX COMM 1

SSPA 2

SSPA 1

J10

AUX COMM 1

BIAST

1:1 MBT SUBSYSTEM

BUC 2 (Slot 1)

BIAST

1:1 MBT SUBSYSTEM

BUC 1 (Slot 1)

UNIT 1 COMM

REDUNDANCY INTERLINK CABLE

MBT A MBT B

UNIT 1 COMM

SWITCH 2 IF

SWITCH 1 IF

LOAD

L-BAND OUT

L-BAND MODEM

L-BAND IN

COMTECHEFDATA

DUAL MBT-4000 REDUNDANT SWITCH

Note: 1:2 splitters/combiners may be substituted for the L-Band Input/Output switches.

Figure 1-4. Typical, Chain Switched, Redundant Diagram

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Multi-Band Transceiver System Revision 0 Introduction MN/MBT4000B.IOM

NOTES:

1-6

Chapter 2. Installation

2.1 UNPACKING AND INSPECTION

Inspect shipping container for damage. If shipping containers are damaged, keep them until contents of shipment have been carefully inspected and checked for normal operation.

Remove the packing list from the outside of the shipping carton. Open the carton and remove the contents, checking the contents against the packing list. Verify completeness of the shipment and that the unit functions correctly. If damage is evident, contact the carrier and Comtech EF Data immediately and submit a damage report. If the unit needs to be returned to Comtech EF Data, use the original shipping container.

2.2 INSTALLATION AND OPERATION

The Common Module of the MBT-4000B may be located near or on the antenna. The band-specific BUC is latched into place on top of the Common Module (M&C, Power Supply, Reference). Cables to the antenna and IDU complete the installation.

Table 2-1. PWR IN (J1) Pin Connections

Pin PWR IN (J1)

A LINE

B NEUTRAL

C GND

Mating Connectors:

ITT Cannon KPT06B-12-3S CEFD PN CN/MS-STPG03F02

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2.2.1 COMM (J2) PIN CONNECTIONS

Table 2-2. COMM (J2) Pin Connections

Pin COMM (J2)

A RS 485 Rx+

B RS 485 Rx-

C RS 485 Tx+

D RS 485 Tx-

E RS 232 RD

F NC

G RS 232 TD

H NC

J NC

K SUM FLT COMM

L SUM FLT NO

M SUM FLT NC

N NC

P NC

R NC

S NC

T GND

U GND

V NC

Mating Connectors:

Cannon MS3116J14-19P CEFD CN/MS3116J14-19P

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Multi-Band Transceiver System Revision 0 Installation MN/MBT4000B.IOM

2.2.2 IF SWITCH (J4) PIN CONNECTIONS

Table 2-3. IF Switch (J4) Pin Connections

Pin IF Switch (J4)

A POS 1 IF

B GND

C POS 2 IF

D POS 1 IND IF

E GND

F POS 2 IND IF

Mating Connectors:

Cannon MS3116J10-6P CEFD CN/MS3116J10-6P

2.2.3 REDUNDANT LOOP (J7) PIN CONNECTIONS

Table 2-4. Redundant Loop (J7) Pin Connections

Pin Redundant Loop (J7)

A SW POS 2 DRIVE OUT

B GND

C SW POS 2 DRIVE OUT

D RF SW IND OUT

E IF SW IND OUT

F SW POS 1 DRIVE IN

G SW POS 2 DRIVE IN

H RF SW IND IN

J IF SW IND IN

K MBT A IND

L MBT B IND

M NC

N BXC 1 FLT OUT

P BXC 2 FLT OUT

R BXC 1 FLT IN

S BXC 2 FLT IN

T NC

U TX

V RX

Mating Connectors:

CEFD CA/WR11224 Redundant Loop Cable

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2.2.4 AUX COMM 1 (J9) PIN CONNECTIONS

Table 2-5. Aux Comm 1 (J9) Pin Connections

Pin AUX COMM1 (J9)

A AUX Rx + A

B AUX Rx – A

C AUX Tx + A

D AUX Tx – A

E +12.6V LNA A

F IO1 A/Fault see Note 1

G IO1 B see Note 2

H GND

Mating Connectors:

Cannon MS3116J12-8P CN/MS3116J12-8P

Notes:

1. Input from external amplifier.

2. Normally, an Input, when programmed as an output, this pin indicates Online/Offline status of Unit 1.

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2.2.5 RF SWITCH (J10) PIN CONNECTIONS

Table 2-6. RF Switch (J10) Pin Connections

Pin RF SWITCH (J10)

A POS 1 RF

B GND

C POS 2 RF

D POS 1 IND RF

E GND

F POS 2 IND RF

Mating Connectors:

MS3116J10-6P CN/MS3116J10-6P

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NOTES:

2-6

Chapter 3. System Operation

3.1 DESCRIPTION

The MBT 4000B supports LNBs for receive down conversion. It outputs +17VDC nominal and 10 MHz on the “L-Band input” connector. The LNB amplifies the input RF signal and down converts it to L-Band in the range of 950 to 1750 MHz (there may be instances that the L-Band range = 950 to 1450 MHz ). The choice of which downlink frequency band is determined by the selection of a frequency range, usually from one of LNBs in the following bands:

For C-Band For Ku-Band

3.625 to 4.2 GHz

4.50 to 4.80 GHz

LNBs are available that are either externally referenced (EXT REF) or internally referenced (INT REF). DC power is supplied to the LNB through the IFL cable from

IMPORTANT

The standard LNB noise temperature is: For C-Band < 35°K.

For Ku- Band < 65°K.

the MBT 4000B for both types.

10.95 to 11.70 GHz

11.70 to 12.20 GHz

12.25 to 12.75 GHz

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Multi-Band Transceiver System Revision 0 System Operation MN/MBT4000B.IOM

3.2 BLOCK UP CONVERTER (BUC-4000)

The BUC-4000 translates an L-Band carrier to the desired output frequency (C, X-, or Ku- or Ka-), with an output level capable of driving an HPA.

BUC-4000 C, X, Ku, Ka

Band Frequency LO Frequency Inverting

C-Band 5850 to 6650 MHz 4900 MHz No

X-Band 7900 to 8400 MHz 6950 MHz No

Ku-Band-W 13.75 to 14.50 GHz 12.800 GHz No

Ka-Band 30.00 to 31.00 GHz

Notes:

1. No spectral inversion

2. 10 dB gain adjustment.

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3.3 LO, MIX AND SPECTRUM SETTINGS (LNB)

3.3.1 C-BAND

Table 3-1. For C-Band: LO and MIX Information for Demodulator and LNB

LNB Part No.

RF/LNB-C-55-35N 3.625 – 4.200 GHz

RF/LNB3.6-4.2FE 3.625 – 4.200 GHz

RF/LNB3.6-4.2F03 3.625 – 4.200 GHz

XXXXXXXXXXXXX 3.400 – 4.200 GHz 5,150.00 - 3,400.00 4,200.00 1,525.00 950.00 Invert 18 Type F

XXXXXXXXXXXXX 4.500 – 4.800 GHz 5,760.00 - 4,500.00 4,500.00 1,525.00 950.00 Invert 18 Type F

Description

Ext Ref

LO (Offset)

Frequency

(MHz)

5,150.00 - 3,625.00 4,200.00 1,525.00 950.00 Invert 18 Type N

5,150.00 - 3,625.00 4,200.00 1,525.00 950.00 Invert 18 Type F

MIX (+/-)

Min

LNB

Satellite

Frequency

(MHz)

Max

LNB

Satellite

Frequency

(MHz)

L-Band

Frequency

LNB Min

(MHz)

L-Band

Frequency

LNB Max

(MHz)

Demod

Spectrum

(Utility

Demod

Menu)

Operating Voltage, V

Connector

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3.3.2 KU-BAND

Table 3-2. For Ku-Band: LO and MIX Information for Demodulator and LNB, Ku-Band

LNB Part No.

RF/LNB-10.9-11.7FE 10.95 – 11.7 GHz

RF/LNB-11.7-12.2FE 11.7 – 12.2 GHz

RF/LNB-12.2-12.7FE 12.25 - 12.75 GHz

RF/LNB-10.9-11.7F03 10.95 – 11.7 GHz

RF/LNB-11.7-12.2F03 11.7 – 12.2 GHz

RF/LNB-12.2-12.7F03 12.25 - 12.75 GHz

Description

Ext Ref

± 3 ppm

LO (Offset)

Frequency

(MHz)

10,000.00 + 10,950.00 11,700.00 950.00 1700.00 Normal 18 Type F

10,750.00 + 11,700.00 12,200.00 950.00 1450.00 Normal 18 Type F

11,300.00 + 12,250.00 12,750.00 950.00 1450.00 Normal 18 Type F

10,000.00 + 11,200.00 11,700.00 950.00 1450.00 Normal 18 Type F

10,750.00 + 10,950.00 11,700.00 950.00 1700.00 Normal 18 Type F

11,300.00 + 12,250.00 12,750.00 950.00 1450.00 Normal 18 Type F

MIX (+/-)

Min

LNB

Satellite

Frequency

(MHz)

Max

LNB

Satellite

Frequency

(MHz)

L-Band

Frequency

LNB Min

(MHz)

L-Band

Frequency

LNB Max

(MHz)

Demod

Spectrum

(Utility

Demod

Menu)

Operating Voltage, V

Connector

3-4

Chapter 4. Redundant Configuration

4.1 General

The MBT-4000B is designed to operate in both stand-alone and redundant configurations. Every MBT-4000B base contains the circuitry and logic necessary to perform all the functions of a backup controller in either a single base and dual base configuration. The Bias Tee side of the MBT 4000B provides the 10 MHz reference and DC voltage for the LNB. This power supply features current monitoring with programmable failure limits. Overcurrent and undercurrent failures can participate in overall fault indication and redundant switchover criteria.

Each MBT-4000B base includes one “AUX COMM” connector. This connector includes a logic input intended to be connected to contact closure fault indications of external equipment. Thus, external equipment failure may participate in overall fault indication and redundant switchover operation. The “AUX COMM” connector also has a user programmable I/O pin. When programmed as an output, this pin indicates the online/offline position of the switch associated with the BUC. This signal can be used to mute the external offline amplifier.

Each MBT-4000B base includes two “switch drive” connectors. Each of these connectors is intended for driving and monitoring a 28V latching switch. In most installations, one switch drive connector will drive an RF waveguide switch, while the second switch drive connector will drive an IF(L-Band) co-axial switch.

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Multi-Band Transceiver System Revision 0 Redundant Configuration MN/MBT4000B.IOM

4.2 Dual Base (Chain) Redundancy Operation

Refer to Figure 4-1 of typical Dual Base (Chain) Redundancy configuration.

RF SWITCHES

SHOWN IN POSITION

REJECT

FILTER

LNB2

LNB1

BIAST

1:1 MBT SUBSYSTEM

BUC 2 (Slot 1)

LOAD

L-BAND OUT

REDUNDANCY INTERLINK CABLE

MBT A MBT B

BIAST

1:1 MBT SUBSYSTEM

BUC 1 (Slot 1)

UNIT 1 COMM

SWITCH 2 IF

LOAD

SWITCH 1 IF

DUAL MBT-4000 REDUNDANT SWITCH

L-BAND MODEM

L-BAND IN

REJECT

FILTER

COMTECHEFDATA

SWITCH 2 RF

WAVEGUIDE

LOAD

WAVEGUIDE

SWITCH 1 RF

AUX COMM 1

SSPA 2

SSPA 1

J10

AUX COMM 1

Note: 1:2 splitters/combiners may be substituted for the L-Band Input/Output switches.

Figure 4-1. Dual Base (Chain) Redundancy Operation

The two base units cooperate in monitoring the health of the two BUCs, two external amplifiers, two LNBs, and each other. In case of a fault on an on-line BUC/amplifier or LNB, the base containing the corresponding standby chain will automatically switch over to the standby chain according to the following rules:

Step Procedures

1 In dual base (chain) redundancy operation, the redundancy is ‘slot’ based. The corresponding

pairs reside in the same ‘slot’ of the opposite MBT-4000B base, the pair of BUCs connected to J3 UNIT 1 COMM (slot 1) on each base form a redundant pair. The LNBs connected to

“L BAND IN” on each base form the other redundant pair. 2 The corresponding BUCs in a pair must be of the same type. 3 The redundancy interlink cable (P/N: CA/WR11224-1 or equivalent), must be installed. 4 Base unit identification (MBT A or MBT B) is driven by the redundancy interlink cable. Hard-

wired connections within the cable designate one MBT-4000B base as MBT-A and the other as

MBT-B. The cable is labeled accordingly. 5 The RF and IF switches connected to MBT-A correspond to the redundant pair of BUCs

installed on J3 UNIT 1 COMM (slot 1). 6 The RF and IF switches connected to MBT-B correspond to the redundant pair of LNBs

installed on the “L Band In” connectors. 7 When a BUC or LNB attached to MBT-A is on-line, the corresponding RF and IF switches will

be switched to position A. When a BUC or LNB attached to MBT-B is on-line, the

corresponding switches will be switched to position B.

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For a switchover to occur:

• Both MBT-4000B base units must be set to redundancy mode 2, the RED=2 command must have been received by each base.

• Both chains must be set to automatic mode. For example, if the redundant pair is on Slot 2 of the bases, the command RAM=21 must have been received by each base.

• The corresponding standby chain must not be in faulted state.

4.3 External Fault Monitoring

Each MBT-4000B base includes a logic input, on the AUX COMM connector, that may be connected to contact closure fault indications of external equipment (usually an SSPA or TWTA). Thus, external equipment failure may participate in overall fault indication and redundant switchover operation according to the following rules:

Step Procedures

1 An open connection (or 2.7 V min) indicates a fault condition exists. 2 A closed connection (or 0.7 V max) indicates no fault condition exists. 3 Maximum voltage range on fault logic inputs is –12V to +12V. 4 The fault input of AUX COM 1 corresponds to the BUC installed as UNIT 1. 5 To enable fault input checking the EAM=1m command is used.The mode parameter ‘m’ can

equal 0 for disabled, or 1 for enabled

4.4 LNB Power Supply Current Monitoring

The bias tee in the MBT-4000B base is used to supply power and the 10 MHz reference to the LNB.

This power supply features current monitoring with programmable failure limits. Over-current and under-current failures can participate in overall fault indication and redundant switchover criteria.

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The following commands and rules configure operation of this feature.

Step Procedures

1 The power supply provides +18V with a 450 mA current limit. 2 The bias tee supply is controlled by issuing the ‘LCS=2m’ command as follows:

a. ‘‘m’ is the mode. Valid values are 0=OFF or 1=ON.

3 In case of excessive current (more than 450 mA), the supply will be disabled and a fault will be

posted. The ‘LCS=2m’ command must be sent again to re-enable the supply.

4 To enable programmable current monitoring, the following steps are taken:

a. The desired output is enabled as outlined above. b. The nominal current is calibrated using the CLC=2 command. c. The programmable current window is specified using the LCW=2xx command. Where ‘xx’

is the allowable percentage of variance from nominal (set by the CLC command). Acceptable values for ‘xx’ are 20 to 50 in increments of 1%. In addition, a value of ‘99’ for ‘xx’ disables the alarm function.

d. If a current is detected outside this window, a LNB current fault will be posted, but the

supply will not be disabled.

4.5 Gain Equalization of Redundant Units

Uplink Gain equalization in an MBT-4000B system is accomplished by issuing individual attenuation settings to the specific BUCs.

4.6 LED Status Indicators

The two LED indicators reflect the status of the MBT-4000B as follows:

For the Online status:

Steady GREEN Steady YELLOW Steady RED

For the Offline status:

Blinking GREEN Blinking YELLOW Blinking RED

No faults present and the unit is not muted. No faults present and the unit is muted. The unit is faulted.

No faults present, the unit is not muted. No faults present, the unit is muted. The unit is faulted.

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4.7 Redundany Systems Check

Step Procedure

1 Set up two MBTs with BUCs installed in slot one.

Note: The BUCs must match.

2 Using a multi-drop 485 connection, set the comm. address of one MBT to

one(<”current address”/SPA=0001) and the comm. address of the other MBT to two(<”current address”/SPA=0002.

3 With both MBTs connected to a multi-drop 485 connection, use the RET

command to verify communication and software versions on all bases and MBTs.

4 Power the system down.

5 Connect the redundant loop cable

units.

6 Connect switches to the RF Switch connector on both base units. Note the “A”

and “B” labels on the end of the redundant loop cable. The MBT base connected to the “A” end of the cable will be connected to the switch associated with the uplink(BUC/SSPA) path and will be referred to as “MBT A”. The MBT connected to the end of the cable labeled “B” will be connected to the switch associated with the downlink(LNB) and will be referred to as “MBT B”.

7 Power up system.

8 Enable two unit redundancy by sending RED=2 to both base units.

9 Place redundancy in AUTO mode by sending RAM=11 and RAM=21 to both base

units.

10 Verify that there are two “solid” LEDs and two “flashing” LEDs. The “solid” LEDs

indicate the “online” slots. The “flashing” LEDs indicate the offline slots.

11 Send MUT=0 to all blocks(<1A1/MUT=0, <2A1/MUT=0) This should unmute the

BUCs. Unmute the bias tee by sending an MSP=0 to both base units(<1/MSP=0, <2/MSP=0)

12 Verify that all LEDs are green, with two flashing.

13 Power down MBT B. This should force both switches to select MBT A.

(CA/WR11224-1) between the two MBT base

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Step Procedure

14 Verify that both LEDs on MBT A are solid green.

15 Power up MBT B

16 Verify that both LEDs on MBT B are flashing green.

17 Power down MBT A.

18 This should have forced both switches to throw to MBT B.

19 Verify that both LEDs on MBT B are solid green

20 Power up MBT A.

21 Verify that both LEDs on MBT A are flashing green.

Uplink Test

22 Fault the block in slot 1 of MBT B by disconnecting the base-to-BUC cable.

23 LED 1 on MBT B should now be flashing red.

24 This should have forced the switch connected to MBT A to throw.

25 Verify that LED 1 on MBT A is solid green.

27 Clear the fault on unit 1 of MBT B by reconnecting the base-to-BUC cable.

28 Verify that LED 1 on MBT B is now flashing green.

29 Fault the block in slot one of MBT B and confirm proper switch/LED behavior.

30 If the system is being used to monitor external SSPAs to provide chain switching,

perform the following. Otherwise, continue to the “Downlink Test”.

31 Build the two cables(one per MBT/SSPA) that interface the AUX COMM 1

connector of the MBT to the amplifiers discrete control connector.

Items to note:

1. The MBT is designed to pass 485 communications directly to the amplifier. Pins A-D are hard wired to the 485 comm. bus coming into the MBT. If the amplifier is going to share the same 485 bus, it will need to have its own serial comm. address.

2. Pin F of the AUX comm. connector is used to monitor the summary fault relay of the amplifier. This line is internally pulled up and must be grounded to clear a fault condition. MBT serial command ”EAM=11” allows this fault to be detected and acted upon by the MBT.

3. Pin G of the AUX comm. connector provides a logic level ONLINE/OFFLINE indication. This can be used to force an offline amplifier to be muted. The amplifier must have a discrete mute-status control line. This pin is set to be an output using the “EOM=1O” (letter O) command. The logic state associated with an online/offline position can be set using the “IOM=21” or IOM=20” command

32 Connect the cable between the amplifiers and the AUX Comm. one connectors

on the base units. Terminate the output of the amplifiers and power them up

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Step Procedure

33 Enable external fault monitoring by sending an EAM=11 command to both base

units.

34 Fault the online SSPA by removing its power and confirm LED one of the

associate MBT is red(indicates fault detected” and blinking(indicates the switch has thrown and is now offline). Restore the system and repeat for the second amplifier.

35 If the online/offline control line(Pin G of the Aux comm. connector) is being used,

proper operation can be established by querying the amplifiers mute status. The line must be enabled as an output using the “EOM-1O” command. If the logic levels are opposite of what is required, the “IOM=1X” command can be used.

36 Setting the BUC attenuators independently performs gain balancing. If the

BUC/amplifier chain associated with MBT A has 1 dB more gain then the chain associated with MBT B, add one dB of attenuation to the desired setting of the BUC on MBT A.

Downlink Test

37 Ensure redundancy is enabled and set to AUTO mode as outlined above

38 Connect the LNBs

39 Enable the LNB voltage by sending “LCS=21” to both base units.

40 Verify the LNBs are drawing appropriate current by polling the with an “RMS?”

query. Reported current for “LNA2” should be in the 200 to 400 mA range.

41 Calibrate the normal operating point of the LNB by sending “CLC=2” to both base

units. This records the operating current of the LNB and the MBT will monitor this current.

42 Set the desired current window(outside of which a fault will be declared) using the

“LCW=2XX” command. Note the “XX” is the percentage of the nominal current allowed before a fault is declared. 30%(LCW=230) is a typical setting.

43 Disconnect the online LNB(indicated by the solid unit two LED). The LED should

now turn red and blink and the LNB switch should throw. The unit 2 LED on the other MBT should stop blinking

44 Restore the first LNB and fault the second. The same change in LEDs and switch

position should be observed.

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This section describes the protocol and message command set for remote monitor and control of the MBT 4000B.

The electrical interface is either an RS-485 multi-drop bus (for the control of many devices) or an RS-232 connection (for the control of a single device), and data is transmitted in asynchronous serial form, using ASCII characters. Control and status information is transmitted in packets, of variable length, in accordance with the structure and protocol defined in later sections.

A.1 RS-485

For applications where multiple devices are to be monitored and controlled, a full-duplex (or 4-wire) RS-485 is preferred. Half-duplex (2-wire) RS-485 is possible, but is not preferred.

In full-duplex RS-485 communication, there are two separate, isolated, independent, differentialmode twisted pairs, each handling serial data in different directions. It is assumed that there is a ‘controller’ device (a PC or dumb terminal), which transmits data, in a broadcast mode, via one of the pairs. Many ‘target’ devices are connected to this pair, which all simultaneously receive data from the controller. The controller is the only device with a line-driver connected to this pair - the target devices only have line-receivers connected.

In the other direction, on the other pair, each target has a tri-stateable line driver connected, and the controller has a line-receiver connected. All the line drivers are held in high-impedance mode until one target transmits back to the controller.

Each target has a unique address, and each time the controller transmits, in a framed ‘packet’ of data, the address of the intended recipient target is included. All of the targets receive the packet, but only the intended one will reply. The target enables its output line driver, and transmits its return data packet back to the controller, in the other direction, on the physically separate pair.

Appendix A. Remote Control

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RS-485 (full duplex) summary:

Two differential pairs

one pair for controller to target one pair for target to controller

Controller-to-target pair

Target-to-controller pair

A.2 RS-232

This is a much simpler configuration in which the controller device is connected directly to the target via a two-wire-plus-ground connection. Controller-to-target data is carried, via RS-232 electrical levels, on one conductor, and target-to-controller data is carried in the other direction on the other conductor.

A.3 BASIC PROTOCOL

Whether in RS-232 or RS-485 mode, all data is transmitted as asynchronous serial characters, suitable for transmission and reception by a UART. The asynchronous character format is fixed at 8 data bits, no parity, and 1 stop bit. Only two (2) baud rates are supported: 9600 baud and 19200 baud.

All data is transmitted in framed packets. The host controller is assumed to be a PC or ASCII dumb terminal, which is in-charge of the process of monitor and control. The controller is the only device that is permitted to initiate, at will, the transmission of data. Targets are only permitted to transmit when they have been specifically instructed to do so by the controller.

All bytes within a packet are printable ASCII characters, less than ASCII code 127. In this context, the Carriage Return and Line Feed characters are considered printable.

All messages from controller to target require a response (with one exception). This will be either to return data that has been requested by the controller, or to acknowledge reception of an instruction to change the configuration of the target. The exception to this is when the controller broadcasts a message (such as Set time/date) using Address 0, when the target is set to RS-485 mode.

one line driver (controller) and all targets have linereceivers.

one line receiver (controller) and all targets have tristate drivers.

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A.4 PACKET STRUCTURE

Controller-to-Target:

Start of Packet Target

Address

ASCII code 60

(1 character)

(4 or 6

characters)

Example: <0412/MUT=1{CR}

Target-to-Controller:

Start of Packet Target

Address

ASCII

code 62

(1 character)

(4 or 6

characters)

Example: >0412/MUT={CR}{LF}

Each of the components of the packet is now explained.

Address

De-limiter

ASCII code 47

(1 character)

Address

De-limiter

ASCII

code 47

(1 character)

Instruction

Code

(3 characters)

Instruction

Code

(3 characters)

Code

Qualifier

= or ?

ASCII code

61 or 63

(1 character)

Code Qualifier Optional

=, ?, !, or *

ASCII code 61,

63, 33 or 42

(1 character)

Optional

Arguments

(n characters)

Arguments

(From 0 to n

characters)

End of Packet

ASCII code 13

(1 character)

End of Packet

Carriage Return,

Line Feed

ASCII code 13,10

(2 characters)

Carriage

Return

A.4.1 START OF PACKET

Controller to Target: This is the character ‘<’ (ASCII code 60)

Target to Controller: This is the character ‘>’ (ASCII code 62) Because this is used to provide a reliable indication of the start of packet, these two characters may not appear anywhere else within the body of the message.

A.4.2 ADDRESS

Up to 9999 devices can be uniquely addressed. In both RS-232 and RS-485 applications, the permissible range of values is 1 to 9999. It is programmed into a target unit using the remote control port.

The BDC and BUC sub-devices may also be addressed by appending the corresponding subdevice address. The sub-device address is ‘A1’ for the BXC.

For example, a mute command addressed to a BUC attached to an MBT-4000B at address 0412 will be:

<0412A1/MUT=1{CR}

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The format of the response will be:

>0412A1/MUT={CR}{LF}

Sub-device addresses cannot be changed.

The controller sends a packet with the address of a target - the destination of the packet. When the target responds, the address used is the same

IMPORTANT

address, to indicate to the controller the source of the packet. The controller does not have its own address.

A.4.3 INSTRUCTION CODE

This is a three-character alphabetic sequence that identifies the subject of the message. Wherever possible, the instruction codes have been chosen to have some significance. This aids in the readability of the message, should it be displayed in its raw ASCII form. Upper case and lower case alphabetic characters may be used (A-Z, and a-z).

A.4.4 INSTRUCTION CODE QUALIFIER

This single character further qualifies the preceding instruction code.

Code Qualifiers obey the following rules:

1. From Controller-to-Target, the only permitted values are: = (ASCII code 61) ? (ASCII code 63)

They have these meanings:

The ‘=’ code (controller to target) is used as the assignment operator, and is used to indicate that the parameter defined by the preceding byte should be set to the value of the argument(s) which follow it.

For example, in a message from controller to target, MUT=1 would mean ‘enable the mute function’.

The ‘?’ code (controller to target) is used as the query operator, and is used to indicate that the target should return the current value of the parameter defined by the preceding byte.

For example, in a message from controller to target, MUT? would mean ‘return the current state of the mute function’

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2. From Target-to-Controller, the only permitted values are: = (ASCII code 61) ? (ASCII code 63)

! (ASCII code 33) * (ASCII code 42) # (ASCII code 35)

They have these meanings:

The ‘=’ code (target to controller) is used in two ways:

First, if the controller has sent a query code to a target (for example MUT?, meaning ‘is mute enable or disable?’), then the target would respond with MUT=x, where x represents the state in question, 1 being ‘enable’ and 0 being disable. Second, if the controller sends an instruction to set a parameter to a particular value, and providing the value sent in the argument is valid, then the target will acknowledge the message by replying with MUT= (with no message arguments).

The ‘?’ code (target to controller) is only used as follows:

If the controller sends an instruction to set a parameter to a particular value, and if the value sent in the argument is not valid, then the target will acknowledge the message by replying (for example) with MUT? (with no message arguments). This indicates that there was an error in the message sent by the controller.

The ‘*’ code (target to controller) is only used as follows:

If the controller sends an instruction to set a parameter to a particular value, and if the value sent in the argument is valid, however, the target is in the wrong mode (e.g., standby mode in redundancy configuration) that it will not permit that particular parameter to be changed at that time, then the target will acknowledge the message by replying (for example) with MUT* (with no message arguments).

The ‘!’ code (target to controller) is only used as follows:

If the controller sends an instruction code which the target does not recognize, then the target will acknowledge the message by echoing the invalid instruction, followed by the ! character. Example: XYZ!

The ‘#’ code (target to controller) is only used as follows:

If the controller sends an instruction code which the target cannot currently perform because of hardware resource issues, then the target will acknowledge the message by echoing the invalid instruction, followed by the # character.

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A.4.5 MESSAGE ARGUMENTS

Arguments are not required for all messages. Arguments are ASCII codes for the characters 0 to 9 (ASCII 48 to 57), period (ASCII 46) and comma (ASCII 44).

A.4.6 END OF PACKET

Controller to Target: This is the ‘Carriage Return’ character (ASCII code 13).

Target to Controller: This is the two-character sequence ‘Carriage Return’, ‘Line Feed’. (ASCII code 13, and code 10.)

Both indicate the valid termination of a packet.

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A.5 REMOTE COMMANDS

A AFR, A-9 ATT, A-9

E EAM, A-15 EOM, A-24

L LCM, A-16 LCS, A-16 LCW, A-16 LFL, A-16 LNA, A-18

R RAI, A-21 RAM, A-21 RAS, A-22 RCS, A-23 RED, A-24 REF, A-24 RET, A-24 RMS, A-25 RSN, A-26 RUS, A-26

X XRF, A-28

C CAA, A-9 CAI, A-10 CAS, A-10 CCS, A-11 CID, A-11 CLC, A-11 CMS, A-14 CUS, A-15

D DAT, A-15

F FRE, A-16 FRW, A-16

I IOM, A-24

M MUT, A-18 MSP, A-19

O ONL, A-20

S SBR, A-26 SFS, A-26 SPA, A-26 SSA, A-27 SSW, A-27

T TIM, A-27 TNA, A-28 TSA, A-28

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Command

Parameter

Type

Automatic

Fault

Recovery

State

Attenuation ATT=xx.xx BDC

Clear All

Stored

Alarms

(Instruction

Code and

qualifier)

AFR=x All 1 byte, value

CAA= All None Command only.

Valid

on MBT, BDC,

BUC

Arguments

for

Command

or Response

to Query

of 0, 1

5 bytes, numeric

Description of arguments

(Note that all arguments are ASCII numeric codes, that is, ASCII codes

between 48 and 57)

Command or Query. Enable Automatic Fault Recovery on a BXC as follows: 0=Disabled 1=Enabled

Example: AFR=1

Command or Query Valid attenuation level, in dB, at 0.25dB step size as factory default.

Example: ATT=08.25

Instructs the slave to clear all Stored Events. This command takes no arguments.

AFR=(message ok) AFR? (received ok, but invalid arguments found) AFR*(message ok, but not permitted in current mode)

ATT=(message ok) ATT? (received ok, but invalid arguments found) ATT*(message ok, but not permitted in current mode) ATT! (Command not accepted by MBT-4000B base unit. It must be addressed to BUC or BDC sub-units) CAA=(message ok)

Response to

Command

(target to

controller)

Query

(Instruction

Code and

qualifier)

AFR? AFR=x

N/A N/A

Response to

query

(target to

controller)

(same format

as command

arguments)

Multi-Band Transceiver System Revision 0 Remote Command MN/MBT4000B.IOM

Arguments

Parameter

Type

Concise

AUX

COMM I/O

Command

(Instruction

Code and

Qualifier)

N/A MBT n=Slot

Valid on

MBT,

BDC, or

BUC

for

Command

Response

to Query

1=AUX COMM 1

Description of arguments

(Note that all arguments are ASCII numeric codes, that

is, ASCII codes

between 48 and 57)

Query only. Used to Query the Concise AUX COMM I/O of the MBT4000B base unit, where n=1 Where: n=1(AUX COMM 1)

Example:

<0001/CAI?n{cr} >0001?CAI=nabcd{cr}{lf}

Where: n=1 (AUX COMM) a=12V (0=Off, 1=On) b=IOA (O=logic low [voltage input < 0.5], 1=logic high [voltage input > 2.7 vdc) c=IOB (O=logic low [voltage input < 0.5], 1=logic high [voltage input >2.7 vdc] d=Reserved (Always zero)

Response to Command

(Target to controller)

CAI=(message ok) CAI? (received ok, but invalid arguments found) CAI*(message ok, but not permitted in current mode)

Query

(Instruction

Code and

qualifier)

CAI?n CAI=nabcd

Response to

query

(Target to

controller)

(see

description for

details of

arguments)

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Arguments

Parameter

Type

Concise

Alarm

Status

Command

(Instruction

Code and

qualifier)

N/A All 20 bytes,

Valid on

MBT,

BDC, or

BUC

for

Command

Response

to Query

numeric

Description of arguments

(Note that all arguments are ASCII numeric codes, that

is, ASCII codes

between 48 and 57)

Query only. Used to query the alarm status of the unit. Example:

<0001/CAS?{cr} >0001/CAS=abcdefghijkl{cr}{lf}

where: a through l = 0 or 1, 0=OK, 1=FLT

All: a=+15V Power Supply b=+7.5V Power Supply c=+5.0V Power Supply

MBT-4000B: d=+28V Power Supply e=Ref Oscillator Lock Detect f=Intermodule Communications g=Max current on LNA power supply AUX COMM1 h=Max current on LNB power supply Bias Tee i=Current window LNA power supply AUX COMM1 j=Current window LNB power supply Bias Tee k=Fault input AUX COMM1 (Pin F, J9) l=Not used

BDC/BUC: d=X (reserved for future use) e=Synthesizer Lock Detect f=Heat-sink Temperature g=LNA current (BDC only, reserved on BUC) h=Reserved, always zero i-l=Not sent.

Response to Command

(target to controller)

N/A CAS? CAS=x…X

Query

(Instruction

Code and

qualifier)

Response to

query

(target to

controller)

(see

description for

details of

arguments)

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Valid on

MBT,

BDC, or

BUC

Arguments for

Command or Response to

Query

41 bytes (BUC) 32 bytes (MBT) alphanumeric

Description of arguments

(Note that all arguments are ASCII numeric codes, that is,

ASCII codes between 48 and 57)

Query only. Returns the summarized version of RCS.

Example for MBT-04000 base unit:

<0001/CCS?{cr} >0001/CCS=aa,bb,cc,dd,e,ff,g,h{cr}{lf}

Where: aa=Frequency band for Unit 1 BXC (‘C”, ‘X”, ‘Ka’, ‘Ku’, or ‘NA’) bb=NA cc=Direction for Unit 1 BXC (‘DN’=BDC, ‘UP’=BUC, ‘NA’=None) dd=NA e=Redundancy mode (0, 1, or 2) ff=Automatic mode g=Redundancy loop cable address N=No Cable A=MBT-A B=MBT-B h=External reference lock (1=locked, 0=Not locked)

Example BDC or BUC:

<0001A1/CCS?{cr}{lf} >0001A1/CCS=aaaaa,bb.bb,c,d.d,e,ff,g,hhhh ,i,j,{CR}{lf}

Where: aaaaa=Frequency in MHz bb.bb=Attenuation in dB c=mute state, 0=unmated, 1=muted d.d=slope adjust e=LNA current source (BDC only, BUC=X) ff=LNA current window (BDC only, BUC=XX) g=LNA fault logic (BDC only, BUC=X) hhhh=XXXX (reserved for future use) i=X (reserved for future use) j=Fault recovery, 0=Manual, 1=Auto

Parameter

Type

Concise

Configuration

Status

Command

(Instruction

Code and

qualifier)

N/A All 48 bytes (BDC)

Response to

Command

(target to

controller)

N/A CCS? CCS=x….x

Query

(Instruction

Code and

qualifier)

Response to

query

(target to

controller)

(see

description for

details of

arguments)

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Valid on

MBT,

BDC, or

BUC

BDC

Arguments for

Command or Response to

Query

alphanumeric

S=1 byte

Value of

1 , 2

1=LNA A

2= LNB bias

tee

Description of arguments

(Note that all arguments are ASCII numeric codes, that is,

ASCII codes

between 48 and 57)

Command or Query. Used to identify or name the unit or station. First line is limited to 24 characters.

Example: CID={cr}

-Earth Station 1--

---Converter #1--Command only. This command is used to set the calibration point for the LNA /LNB current alarm feature. Source 1=LNA A (AUX COMM1) 2=LNB Bias Tee

Example: CLC=2 would record the current measured for the LNB bias tee

Response to

CID=(message ok) CID?(received ok, but invalid arguments found)

CLC=(message ok) CLC?(received ok, but invalid arguments found) CLC*(message ok, but not permitted in current mode) CLC!(command not accepted by BUC or BDC subunits.)

Parameter

Type

Circuit

Identification

Calibrate

LNA Current

Command

(Instruction

Code and

qualifier)

CID= All 24 bytes,

CLC=s MBT

Command

(target to

controller)

Query

(Instruction

Code and

qualifier)

CID? CID=x…x

N/A N/A

Response to

query

(target to

controller)

(see

description for

details of

arguments)

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Valid on

MBT,

BDC, or

BUC

Arguments for

Command or Response to

Query

alphanumeric

Description of arguments

(Note that all arguments are ASCII numeric codes, that is,

ASCII codes between

48 and 57)

Query only. Used to query the maintenance status of the unit in concise format. Response is comma delimited as follows: Example:

<0001/CMS?{cr} >0001/CMS=aaa.a,bbb.b,ccc.c,ddd.d,eee.e,fff.f, ggg.g,h,I,j,k{cr} {lf}

All:

aaa.a=+15V power supply bbb.b=+7.5V power supply ccc.=+5V power supply

MBT-4000B Base Unit:

ddd.d=+28V power supply eee.e=Ref oscillator tuning voltage fff.f=LNA current in mA for LNA A (AUX COMM1) ggg.g= LNB current in mA for the bias tee h=local RF switch position (A, B, or N) i=Local IF switch position (A, B, or N) j=Remote RF switch position (A or B) k=Remote IF switch position (A or B)

Note:

1. It is not possible to detect the absence of a remote switch.

2. N= Not present.

BDC:

ddd.d=XXX.X (reserved for future use) eee.e=Synthesizer tuning voltage fff.f=LNA current in mA. ggg.g= Unit temperature in °C. h – k= Not present

BUC:

ddd.d=XXX.X (reserved for future use) eee.e=Synthesizer tuning voltage fff.f=RF output power in dBm (reserved) ggg.g=Unit temperature in °C h – k= Not present

Response to

Command

controller)

Parameter

Type

Concise

Maintenance

Status

Command

(Instruction

Code and

qualifier)

N/A All 40 bytes

Query

(Instruction

(target to

Code and

qualifier)

N/A CMS? CMS=…

Response to

query

(target to

controller)

(see description

for details of

arguments)

A-14

Multi-Band Transceiver System Revision 0 Remote Command MN/MBT4000B.IOM

Valid on

MBT,

BDC, or

BUC

Arguments for

Command or

Response to

Query

alphanumeric

numeric

COMM1

m=0 (disabled), 1 (monitoring enabled)

Description of arguments

(Note that all arguments are ASCII numeric codes, that is,

ASCII codes

between 48 and 57)

Query only. Used to query the utility status of the MBT-4000 Base Unit, response is comma delimited.

Where: aaaa=Physical Address bbbb=Remote Baud Rate

Example:

<0001/CUS? >0001/CUS=aaaa,bbbb{cr}{lf}

Command or Query. A command in the form mmddyy where; dd = day of the month, between 01 and 31 mm = month of the year, between 01 and 12 yy = year, between 00 and 96 (2000 to 2096)

Example: DAT=042503 would be April 24, 2003.

Command or Query. EAM controls monitoring of external fault logic inputs to Aux Comm connectors (J9 pin F). If enabled and external fault input is at Logic 1 ( > 2.6 vdc) a fault will be reported. This fault is reported has the LNA I1 or LNA I2 status in the RAS? Query.

Note: The inputs may be driven by a contact closure relay. They have an internal pull-up resistor (4.7k) to +5 vdc.

Example: EAM=11

N/A CUS? CUS=x…x

DAT= (message ok) DAT? (received ok, but invalid arguments found) DAT* (message ok, but not permitted in current mode) EAM=(message ok) EAM?(received ok, but invalid arguments found)

Parameter

Type

Concise

Utility Status

Set RTC (Real-TimeClock) Date

Enable Aux

Com

Fault Input

Monitoring

Command

(Instruction

Code and

qualifier)

N/A MBT 21 bytes

DAT=mmddyy All 6 bytes,

EAM=nm MBT n=1 AUX

Response to

Command

(target to

controller)

Query

(Instruction

Code and

qualifier)

DAT?

EAM?n EAM=nm

Response to

query

(target to

controller)

(see

description for

details of

arguments)

DAT=mmddyy

(same format as command arguments)

(same format

as command

arguments)

A-15

Multi-Band Transceiver System Revision 0 Remote Command MN/MBT4000B.IOM

Parameter

Type

Operating RF

Frequency

Retreive

Firmware

Number

Monitor LNA

Current

LNA Current

Source

Command

(Instruction

Code and

qualifier)

FRE=xxxxx.

xxx

N/A ALL Query only

N/A MBT

LCS=sx MBT

Valid on

MBT,

BDC, or

BUC

BDC BUC

BDC

Arguments for

Command or Response to

Query

9 bytes,

numeric

s_xxx.x,

s=1 byte,

value of 1, 2

1=LNA A

2=Bias Tee

xxx.x=5 bytes,

numeric

s=1 byte,

value of 1, 2

1=LNA A

2=Bias Tee

x=1 byte,

value of 0, 1

0 = Disable

1 = Enable

(Note that all arguments are ASCII numeric codes, that

Command or Query Valid Operating RF frequency, in MHz.

For Ku BDCs: FRE values: 10950-11700 MHz an LO of 10000 MHz is activated FRE values: 11701-12250 MHz an LO of 10700 MHz is activated FRE values: 12251-12750 MHz an LO of 11300 MHz is activated

Example: FRE=11300.000

Gets the Firmware Number of the unit.

Example: FRW=FW12001’cr’’lf’ Query only. Returns LNA/LNB Current Source Level in mA.

Example: <0001/LCM?2 >0001/LCM=2_045.3{cr}{lf}

Command or Query. LNA Current Source Enable, where:

Source Enable 1=LNA A (Aux Comm 1) 0 = Disabled

2=LNB Bias Tee 1 = Enabled

Example: LCS=20 would turn off the LNB bias current

Description of arguments

is, ASCII codes

between 48 and 57)

Response to

Command

(target to controller)

FRE=(message ok) FRE? (received ok, but invalid arguments found) FRE* (message ok, but not permitted in current mode) FRE! (command not accepted by MBT4000B base unit. It must be addressed to BUC or BDC sub-units)

N/A FRW? FRW=FWxxxx

LCM= (message ok) LCM? (received ok, but invalid arguments found) LCM! (command not accepted by BUC or BDC sub-units)

LCS= (message ok) LCS? (received ok, but invalid arguments found) LCS* (message ok, but not permitted in current mode) LCS! (command not accepted by BUC or BDC sub-units)

Query

(Instruction

Code and

qualifier)

FRE? FRE=xxxxx.xxx

LCM?s

s=1 byte,

value of 1, 2

LCS?s

s=1 byte,

value of 1, 2

Response to

query

(target to

controller)

(see description of arguments)

LCM=s_xxx.x

LCS=sx

(same format as command arguments)

A-16

Multi-Band Transceiver System Revision 0 Remote Command MN/MBT4000B.IOM

Valid on

MBT,

BDC, or

BUC

BDC

Arguments for

Command or Response to

Query

s=1 byte,

value of 1, 2

1=LNA A 2=LNA B

xx=2 bytes,

numeric

s=1 byte,

value of 1, 2

1=LNA A

2=LNB bias tee

x=1 byte,

Value of 0, 1

0 = Disable

1 = Enable

Description of arguments

(Note that all arguments are ASCII numeric codes, that

is, ASCII codes

between 48 and 57)

Command or Query. This command allows the user to set the alarm window in ± % of the calibrated LNA/LNB bias Current. Valid inputs are 20 to 50 in increments of 1%. In addition, setting the value to 99 disables the alarm function.

Default is disabled.

Example: LCW=230, set alarm window for the LNB bias tee to ± 30%.

Command or Query. Allows LNA/LNB Fault Logic to contribute to the summary fault relay as follows:

Source Enable 1=LNA A (Aux Comm 1) 0 = Disabled 2=LNB bias tee 1 = Enabled

Example: LFL=21 would generate a fault if the measured current for the bias tee varied from the calibrated operating point stored by the CLC=2 command more the % allowed by the LCW=2xx command

Parameter

Type

LNA/LNB Current

Window

LNA/LNB Fault

Logic

Command

(Instruction

Code and

qualifier)

LCW=sxx MBT

LFL=sx MBT

Response to

Command

(target to controller)

LCW= (message ok) LCW? (received ok, but invalid arguments found) LCW* (message ok, but not permitted in current mode) LCW! (command not accepted by BUC or BDC sub-units)

LFL= (message ok) LFL? (received ok, but invalid arguments found) LCS* (message ok, but not permitted in current mode) LFL! (command not accepted by BUC or BDC sub-units)

Query

(Instruction

Code and

qualifier)

LCW?s LCW=sxx

LFL?s

s=1 byte,

Value of 1, 2

Response to

query

(target to

controller)

(same format as command arguments)

LFL=sx

(same format as command arguments)

A-17

Multi-Band Transceiver System Revision 0 Remote Command MN/MBT4000B.IOM

Command

Parameter

Type

Retrieve next 5

unread Stored

Alarms

Mute State MUT=x BDC

(Instruction

Code and

qualifier)

N/A All 145 bytes Query only

Valid on

MBT,

BDC, or

BUC

Arguments for

Command or Response to

Query

1 byte,

value of 0,1

Description of arguments

(Note that all arguments are ASCII numeric codes, that

is, ASCII codes

between 48 and 57)

The unit returns the oldest 5 Stored Events, which have not yet been read over the remote control. Reply format: Subbody{CR}Sub-body{CR}Sub-body{CR}Sub-body{CR}Subbody, where Sub-body= YYYYYYYYYY ZZ hhmmss mmddyy

Where: YYYYYYYYYY=being the fault description. ZZ= being the alarm type. FT = Fault OK = Clear IF = Information

If there are no new events, the unit will reply with LNA*

Note: See Appendix B for a description of possible Alarm/Events that may be found in the Alarm queue.

Command or Query. Mute the unit, where: 0 = Disabled, 1 = Enabled

Example: MUT=1

N/A LNA? LNA=YY..ss

MUT= (message ok) MUT? (received ok, but invalid arguments found) MUT* (message ok, but not permitted in current mode) MUT! (command not accepted by MBT4000B base unit. It must be addressed to BUC or BDC sub-units)

Response to

Command

(target to controller)

Query

(Instruction

Code and

qualifier)

MUT? MUT=x

Response to

query

(target to

controller)

(see description for details of arguments)

(same format as command arguments)

A-18

Multi-Band Transceiver System Revision 0 Remote Command MN/MBT4000B.IOM

Bias Tee Mute

State

MSP=x MBT 1 byte,

value of 0,1

Command or Query. Mute the unit, where: 0 = Disabled, 1 = Enabled

Example: MSP=1 would mute the LNB bias tee

MSP= (message ok) MSP? (received ok, but invalid arguments found) MSP* (message ok, but not permitted in current mode) MSP! (Command not accepted by BUC or BDC sub-units. It must be addressed to the MBT-4000B base unit )

MSP? MSP=x

(same format as command arguments)

A-19

Multi-Band Transceiver System Revision 0 Remote Command MN/MBT4000B.IOM

Command

Parameter

Type

Online Status N/A All N/A Query only.

(Instruction

Code and

qualifier)

Valid on

MBT,

BDC, or

BUC

Arguments for

Command or Response to

Query

Description of arguments

(Note that all arguments are ASCII numeric codes, that is,

ASCII codes

between 48 and 57)

Used to query the online status of the unit (useful in redundant configurations).

Return position of corresponding RF switch.

Example for MBT-4000B base unit:

<0001/ONL?{cr} >0001/ONL={cr}{lf} ON1=ON ,{cr} ON2=ON , {cr}{lf}

Example for BDC:

<0001A1/ONL?{cr} >0001A1/ONL=1{cr}{lf}

Example for BUC: <0001A2/ONL?{cr} >0001A2/ONL=1{cr}{lf}

(target to controller)

ONL= (message ok) ONL? (received ok, but invalid arguments found)

Response to

Command

Query

(Instruction

Code and

qualifier)

ONL? ONL=x

Response to

query

(target to

controller)

A-20

Multi-Band Transceiver System Revision 0 Remote Command MN/MBT4000B.IOM

Valid on

MBT,

BDC, or

BUC

Arguments for

Command or Response to

Query

value of

n=1

1=Aux Comm1

value of 1, 2

1=Unit 1 2=Unit 2

m=1 byte,

Value of 0, 1

0 = Manual

1 = Automatic

Description of arguments

(Note that all arguments are ASCII numeric codes, that is,

ASCII codes

between 48 and 57)

Query only. Used to Retrieve AUX COMM I/O of the MBT-4000B base unit., where n=1 where: n=1 (Aux Comm 1)

Example: <0001/RAI?1 Returns: >0001/RAI= 12V1=On IO1A=0 IO1B=1 RSVD=0

Note: 0 = Logic low or input voltage < 0.5 vdc. 1 = Logic level 1 or input voltage > 2.7 vdc.

Command or Query. Sets redundancy mode as follows:

Unit Mode 1=Unit 1 0 = Manual 2=Unit 2 1 = Automatic

Example: RAM=11

(target to controller)

RAI = (message ok) RAI? (received ok, but invalid arguments found) RAI* (message ok, but not permitted in current mode)

RAM= (message ok) RAM? (received ok, but invalid arguments found) RAM* (message ok, but not permitted in current mode)

Parameter

Type

Retrieve

AUX

COMM I/O

Redundancy

Mode

Command

(Instruction

Code and

qualifier)

N/A MBT 1 byte,

RAM=um MBT u=1 byte,

Response to

Command

Query

(Instruction

Code and

qualifier)

RAI?n RAI=x….x

RAM?u

u=1 byte,

Value of 1, 2

Response to

query

(target to

controller)

(see description for details of arguments)

RAM=um

(same format as command arguments)

A-21

Multi-Band Transceiver System Revision 0 Remote Command MN/MBT4000B.IOM

Valid on

MBT,

BDC, or

BUC

Arguments for

Command or Response to

Query

4000B

64 bytes

(BUC),

74 bytes

(BDC),

alphanumeric

Description of arguments

(Note that all arguments are ASCII numeric codes, that is,

ASCII codes

between 48 and 57)

Query only. Used to Query the Alarm status of the unit

Example for MBT-4000B base:

<0001/RAS?{cr} >0001/RAS={cr} 15VT1=OK{cr} 7V5T1=OK{cr} 5VLT1=OK{cr} 28VT1=OK{cr} REFLD=OK{cr} IICST=OK{cr} LNAC1=OK{cr} (Note 2) LNAC2=OK{cr} (Note 2) LNAW1=OK{cr} (Note 3) LNAW2=OK{cr} (Note 3) LNAI1=OK{cr} (Note 4) LNAI2=OK{cr}{lf} (Note 5)

Example for BDC or BUC:

<0001A1/RAS?{cr} >0001A1/RAS={cr} 15VLT=OK{cr} 7V5LT=OK{cr} 5VOLT=OK{cr} REFLD=XX {cr} (reserved for future use) SYNLD=OK{cr} HSTMP=OK{cr} LNACR=OK{cr}{lf}

Notes:

1. LNACR will only appear for BDC.

2. FT reported if MAX current exceeded.

3. FT reported if LCW window current exceeded.

4. FT reported if EAM = 11 & Pin F of J9 High.

5. FT reported if EAM = 21 & Pin F of J8 High, not applicable to MBT-4000B.

(target to controller)

N/A RAS?

Parameter

Type

Retrieve

Alarm Status

Command

(Instruction

Code and

qualifier)

N/A All 92 bytes MBT-

Response to

Command

Query

(Instruction

Code and

qualifier)

Response to

query

(target to

controller)

RAS=x….x

(see description for details of arguments)

A-22

Multi-Band Transceiver System Revision 0 Remote Command MN/MBT4000B.IOM

Valid on

MBT,

BDC, or

BUC

Arguments for

Command or Response to

Query

4000B)

98 bytes

(BDC),

76 bytes (BUC)

alphanumeric

Description of arguments

(Note that all arguments are ASCII numeric codes, that is,

ASCII codes

between 48 and 57)

Query only. Used to Query the configuration status of the unit

Example for MBT-4000B base:

<0001/RCS?{cr} >0001/RCS={cr} BF1=X {cr} BF2=X {cr} BT1=DN{cr} BT2=UP{cr} RED=0{cr} RAM=00{cr} MBT=N, A, or B EXT=0{cr}{lf}

Example for BDC or BUC:

<0001A1/RCS?{cr} >0001A1/RCS={cr} FLO=06300{cr} ATT=01.00{cr} MUT=1{cr} SLP=0.3{cr} LCS=0{cr} LCW=99{cr} LFL=1{cr} REF=XXXX{cr} (reserved for future use) XRE=X{cr} (reserved for future use) AFR=0{cr}{lf}

Note: for BUC, LCS, LCW, & LFL will not be shown.

(target to controller)

N/A RCS?

Parameter

Type

Retrieve

Configuration

Status

Command

(Instruction

Code and

qualifier)

N/A All 65 bytes (MBT-

Response to

Command

Query

(Instruction

Code and

qualifier)

Response to

query

(target to

controller)

RCS=x….x

(see description for details of arguments)

A-23

Multi-Band Transceiver System Revision 0 Remote Command MN/MBT4000B.IOM

Command

Parameter

Type

Redundancy

State

Reference

Oscillator Adjust

Retrieve

Equipment Type

Enable

Online/offline

indicator line

Invert EOM IOM=xx MBT 1 byte Command or Query. The EOM command is used to establish

(Instruction

Code and

qualifier)

RED=x MBT 1 byte,

REF=xxxx MBT 4 bytes,

N/A All 22 bytes,

EOM=xx MBT 1 byte,

Valid on

MBT,

BDC, or

BUC

Arguments for

Command or Response to

Query

value of 0,1, or

numeric

alphanumeric

value of 1,2

Description of arguments

(Note that all arguments are ASCII numeric codes, that is,

ASCII codes

between 48 and 57)

Command or Query. Controls redundancy state. 0=Off 1=Enables redundancy using single base unit 2=Enables redundancy using dual base units

Example: RED=1

Command or Query. Ref Osc Adjust, between 0000 and 0255. Resolution 0001. Example: REF=0197

Note: REF cannot be adjusted when the unit is locked to an external reference source. Query only. The unit returns a string indicated the Model Number and the software version installed

Example: RET=BUC-4000 VER:1.0.3

Command or Unit Unit Mode 1=Unit 1 0= letter “O”, Aux Comm pin G as an output. 2=Unit 2 I= letter “I”, Aux Comm pin G as an Input.

pin G of Aux comm. 1 to provide Online/offline indication. This command established the logic level associated with the Online/offline indication Unit Mode 1=Unit 1 1=Invert 2=Unit 2 2=No Invert

Response to

Command

(target to controller)

RED= (message ok) RED? (received ok, but invalid arguments found) RED* (message ok, but not permitted in current mode)

REF= (message ok) REF? (received ok, but invalid arguments found) REF* (message ok, but not permitted in current mode) N/A RET?

EOM=(message ok) EOM?(received ok, but invalid arguments found)

IOM= (message ok) IOM? (received ok, but invalid arguments found)

Query

(Instruction

Code and

qualifier)

RED? RED=x

REF? REF=xxxx

EOM? EOM=xx

IOM? IOM=x….x

Response to

query

(target to

controller)

(same format as command arguments)

RET=x….x

(see description for details of arguments)

(see description for details of arguments

A-24

Multi-Band Transceiver System Revision 0 Remote Command MN/MBT4000B.IOM

Valid on

MBT,

BDC, or

BUC

Arguments for

Command or Response to

Query

103 bytes,

alphanumeric

BDC –

98 bytes,

alphanumeric

BUC –

98 bytes,

alphanumeric

Description of arguments

(Note that all arguments are ASCII numeric codes, that is,

ASCII codes

between 48 and 57)

Query only. Used to Query the maintenance status of the unit.

Example for MBT-4000B base: <0001/RMS?{cr}

>0001/RMS={cr}{lf} 15VT1=015.1{cr} 7V5T1=007.7{cr} 5VLT1=005.0{cr} 28VT1=027.2{cr} REFVT=001.3{cr} LNA_1=000.0{cr} LNA_2=000.0{cr} RFSWP=B{cr} IFSWP=N{cr} RRFSW=B{cr} RIFSW=B{cr}{lf}

Example for BUC: <0001A2/RMS={cr}

>0001A2/RMS={cr}{lf} 15VT=015.1{cr} 7V5T=007.6{cr} 5VLT=005.2{cr} REFV=XXX.X{cr} (reserved for future use) SYNT=007.2{cr} POUT=XXX.X{cr} (reserved for future use) TEMP=+25.0{cr}{lf}

Example for BDC: <0001A1/RMS={cr}

>0001A1/RMS={cr}{lf} 15VT=015.1{cr} 7V5T=007.6{cr} 5VLT=005.2{cr} REFV=XXX.X{cr} (reserved for future use) SYNT=007.2{cr} LNAC=255.0{cr} TEMP=+25.0{cr}{lf}

Note: “REFV” will show tuning voltage of reference OSC for standalone. Otherwise REFV=xxx.x which means Not Applicable.

Parameter

Type

Retrieve

Maintenance Status

Command

(Instruction

Code and

qualifier)

N/A All MBT-4000B -

Response to

Command

(target to controller)

N/A RMS?

Query

(Instruction

Code and

qualifier)

Response to

query

(target to

controller)

RMS=x….x

(see description for details of arguments)

A-25

Multi-Band Transceiver System Revision 0 Remote Command MN/MBT4000B.IOM

Command

Parameter

Type

Serial Number N/A All 9 bytes, numeric

Retrieve

Utility Status

Remote Baud

Rate

Summary Fault

Status

Remote Address SPA=xxxx MBT 4 byte,

(Instruction

Code and

qualifier)

N/A MBT 24 bytes

SBR=xxxx MBT 4 bytes, Command or Query.

N/A All N/A Query only.

Valid on

MBT,

BDC, or

BUC

Arguments for

Command or Response to

Query

000000000 to

999999999

alphanumeric

numeric

Description of arguments

(Note that all arguments are ASCII numeric codes, that

is, ASCII codes

between 48 and 57)

Query only. Used to Query the units 9 digit serial number. Slave returns its S/N, in the form xxxxxxxxx.

Example: RSN=000000165

Query only. Used to Query the utility status of the MBT-4000B base unit..

Example:

<0001/RUS={cr} >0001/RUS={cr}{lf} ADR=0001{cr} BDR=9600{cr}{lf}

Set remote baud rate as follows: 9600 = 9600 baud 19K2 = 19200 baud

Used to Query the status of the Summary Fault Relay. Where: 0=OK 1=FT

Example: SFS?

Command or Query. Set Physical Address-between 0001 to 9999. Resolution 0001

Example: SPA=0412

Response to

Command

(target to controller)

N/A RSN?

N/A RUS?

SBR= (message ok) SBR? (received ok, but invalid arguments found) SBR! (Command not accepted by BUC and BDC sub-units.) N/A SFS?

SPA= (message ok) SPA? (received ok, but invalid arguments found) SPA! (Command not accepted by BUC and BDC sub-units.)

Query

(Instruction

Code and

qualifier)

SBR?

SPA?

Response to

query

(target to

controller)

RSN=xxxxxxxx x (see description for details of arguments) RUS=x….x

(see description for details of arguments)

SBR=xxxx

(same format as command arguments)

SFS=x

(see description for details of arguments)

SPA=xxxx (same format as command arguments)

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Multi-Band Transceiver System Revision 0 Remote Command MN/MBT4000B.IOM

Command

Parameter

Type

Slope Adjust SSA=x.x BDC

Set Redundancy

Switch

Set RTC Time TIM=hhmmss All 6 bytes,

(Instruction

Code and

qualifier)

SSW=xy MBT 2 bytes Command only.

Valid on

MBT,

BDC, or

BUC

Arguments for

Command or

Response to

Query

3 bytes, numeric

numeric

Description of arguments

(Note that all arguments are ASCII numeric codes, that

is, ASCII codes

between 48 and 57)

Command or Query. Slope adjust level, valid from 0.0 to 1.0 with 0.1 resolution.

Example: SSA=0.3

SSW control the switches dedicated to Slot1 or 2, and sets them to either Port A or Port B.

Syntax: SSW=xy

Where: X = 1 or 2 depicting Slot 1 or 2 Y = A or B depicting the switch direction.

Direction A Switched to Converter on MBT_A B Switched to Converter on MBT_B

Command or Query. A command in the form hhmmss, indicating the time from midnight, Where: hh = hours, between 00 and 23 mm = minutes, between 00 and 59 ss = seconds, between 00 and 59

Example: TIM=231259 would be 23 hours, 12 minutes and 59 seconds from midnight.

Response to

Command

(target to controller)

SSA= (message ok) SSA? (received ok, but invalid arguments found) SSA* (message ok, but not permitted in current mode) SSA! (command not accepted by MBT4000B base unit. It must be addressed to BUC or BDC sub-units)

SSW=(message ok) SSW=xy

TIM = (message ok) TIM? (received ok, but invalid arguments found) TIM * (message ok, but not permitted in current mode)

Query

(Instruction

Code and

qualifier)

SSA?

N/A N/A

TIM?

Response to

controller)

SSA=x.x

(same format as command arguments)

TIM=hhmmss

(same format as command arguments)

query

(target to

A-27

Multi-Band Transceiver System Revision 0 Remote Command MN/MBT4000B.IOM

Valid on

MBT,

BDC, or

BUC

Arguments for

Command or Response to

Query

value of 0,1

Description of arguments

(Note that all arguments are ASCII numeric codes, that

is, ASCII codes

between 48 and 57)

Returns the number of Stored Events, which remain unread, in the form xx.

Example reply: TNA=18

Query only. Used to Query the status of the Terminal Status. Where: 0=no change in status 1=change in status

Example: TSC=0

Command or Query. XRF controls whether or not the Software monitors the external reference source. If enabled and no source is present, a fault will be reported. 0=Ext Reference not monitored 1=Ext Reference is monitored and the lock state reported

Example: XRF=1

Parameter

Type

Retrieve Number

of unread

Stored Alarms

Terminal Status

change

External

Reference Fault

Logic

Command

(Instruction

Code and

qualifier)

N/A All 2 bytes, numeric Query only.

N/A All 1 byte,

XRF=x MBT 1 byte,

Response to

Command

(target to controller)

N/A TNA? TNA=xx

N/A TSC? TSC=x

XRF=(message ok) XRF?(received ok, but invalid arguments found)

Query

(Instruction

Code and

qualifier)

XRF? XRF=x

Response to

query

(target to

controller)

(see description for details of arguments)

A-28

Multi-Band Transceiver System Revision 0 Remote Command MN/MBT4000B.IOM

NOTES:

A-29

Appendix B. Faults/Events

There are three types of Faults/Events that may occur and be recorded in the event log of an MBT-4000B or BUC-4000. These are:

• Summary Faults

• Configurable Summary Faults

• Informational Events

Summary Faults indicate improper operation. When a Summary Fault condition occurs: The Summary Fault Relay will be de-energized. If a Summary Fault occurs on a converter, it will mute. If a Summary Fault occurs on the base unit, the applicable converters (one or both) will be muted according to the specific error. If a Summary Fault occurs on the on-line unit of a redundant pair, the off-line unit will detect the fault and assume on-line state. In all cases, a corresponding event message will be added to the event log.

Configurable Summary Faults operate the same as Summary Faults, except Configurable Summary Faults may be enabled/disabled via remote commands.

Informational Events are operation conditions, which may be important, but are not considered improper operation and will not cause a converter to mute.

Tables B1through B5 list possible Fault/Event messages.

B-1

Multi-Band Transceiver System Revision 0 Faults/Events MN/MBT4000B.IOM

Table B-1. MBT-4000B Summary Faults

Mnemonic Type Mute Description

15V PS1 Summary Fault All

28V PS1 Summary Fault All

5VT PS1 Summary Fault All

7V5 PS1

IIC BUS

Summary Fault All

The 15 volt power supply is out of tolerance.

The 28 volt power supply is out of tolerance.

The 5 volt power supply is out of tolerance.

The 7.5 volt power supply is out of tolerance.

Unable to communication via the internal high speed communication bus

Table B-2. MBT-4000B Configurable Summary Faults

Mnemonic Type Mute Description

AUXCOM1 Summary Fault

– Configurable

LNACUR2 Summary Fault

- Configurable

LNAWIN2 Summary Fault

– Configurable

REF LD

Summary Fault

– Configurable

Slot 1

Slot 2

Slot 2 The +17 V nominal bias tee provided LNB power supply current is

All

The IO1A/FAULT input (AUX COMM 1) indicates a fault. Monitoring for this fault is enabled using the EAM command.

The +17 V nominal bias tee provided LNB power supply current has exceeded the maximum limit of 450 mA and has been disabled. The LNB power supply—and thus this fault—is enabled using the LCS command.

This fault is cleared by a LCS command or power cycle.

outside the programmed window. (The power supply is not disabled in response to this fault.). LNB current window monitoring is configured and enabled using the LCS, CLC and LCW commands.

This fault is cleared by a LCS command, CLC command, LCW command or power cycle.

The External Reference Monitor has lost lock with the external reference signal. All attached converters (UNIT 1 and UNIT 2) have been muted. Monitoring for this fault is enabled using the XRF command. This fault is cleared when lock has been regained.

Table B-3. MBT-4000B Informational Events

Mnemonic Type Mute Description

LOG CLR Informational Event

PWR OFF Informational Event

PWR ON Informational Event

B-2

None

The Event LOG Queue was cleared in response to receipt of a CAA command.

Power off was detected.

Power on was detected.

Multi-Band Transceiver System Revision 0 Faults/Events MN/MBT4000B.IOM

Table B-4. BUC-4000 Summary Faults

Mnemonic Type Description

15V SUP Summary Fault

5VT SUP Summary Fault

7V5 SUP Summary Fault

OVR TMP Summary Fault

PLL LD Summary Fault

The 15 volt power supply is out of tolerance.

The 5 volt power supply is out of tolerance.

The 7.5 volt power supply is out of tolerance.

The maximum operating temperature has been exceeded.

The PLL has lost lock.

Table B-5. BUC-4000 Informational Events

Mnemonic Type Description

LOG CLR Informational Event

PWR OFF Informational Event

PWR ON Informational Event

The Event LOG Queue was cleared in response to receipt of a CAA command.

Power off was detected.

Power on was detected.

B-3

Multi-Band Transceiver System Revision 0 Faults/Events MN/MBT4000B.IOM

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B-4

METRIC CONVERSIONS

Units of Length

Unit

1 centimeter — 0.3937 0.03281 0.01094

1 inch 2.540 — 0.08333 0.2778

1 foot 30.480 12.0 — 0.3333

1 yard 91.44 36.0 3.0 —

Centimeter

Inch

Foot

Yard

Mile

6.214 x 10

1.578 x 10

1.893 x 10

5.679 x 10

Meter

-6

-5

-4

0.01 — —

0.254 — 25.4

0.3048 — —

0.9144 — —

Kilometer Millimeter

1 meter 100.0 39.37 3.281 1.094

1 mile

1 mm — 0.03937 — — — — — —

1 kilometer — — — — 0.621 — — —

1.609 x 10

6.336 x 104 5.280 x 103 1.760 x 103

6.214 x 10

-4

—

— — —

1.609 x 103

1.609 —

Temperature Conversions

Unit

32° Fahrenheit

212° Fahrenheit

-459.6° Fahrenheit

° Fahrenheit

—

° Centigrade

(water freezes)

100

(water boils)

273.1

(absolute 0)

Formulas

C = (F - 32) * 0.555

F = (C * 1.8) + 32

Units of Weight

Unit

1 gram — 0.03527 0.03215 0.002205 0.002679 0.001

Gram

Ounce

Avoirdupois

Ounce

Troy

Pound

Avoir.

Pound

Troy

Kilogram

1 oz. avoir. 28.35 — 0.9115 0.0625 0.07595 0.02835

1 oz. troy 31.10 1.097 — 0.06857 0.08333 0.03110

1 lb. avoir. 453.6 16.0 14.58 — 1.215 0.4536

1 lb. Troy 373.2 13.17 12.0 0.8229 — 0.3732

1 kilogram

1.0 x 10

35.27 32.15 2.205 2.679 —

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Comtech EF Data MBT-4000B User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

Table of Contents

Chapter 4. Redundant Configuration