ifi T251-500A Handbuch
Prepared by:
Instruments for Industry
903 South Second Street
Ronkonkoma, NY 11779
Phone 631 467-8400
Fax 631 467-8558
OPERATING AND MAINTENANCE
INSTRUCTIONS
MODEL T251-500A
HIGH POWER TWT AMPLIFIER
DOCUMENT NUMBER
T251-500A Rev.A
SERIAL NUMBER
Prepared for: Advanced Test Equipment S/O #
10401 Roselle St. P/O #
San Diego, CA 92121
Phone: 858-588-6500
Rev. A 10/01/08
2
TABLE OF CONTENTS
SECTION DESCRIPTION PAGE
1.0 INTRODUCTION ............................................................................................................................... 3
2.0 GENERAL DESCRIPTION................................................................................................................ 4
3.0 WARRANTY INFORMATION ....................................................................................................... 10
4.0 GENERAL INFORMATION
4.1 Scope Of This Manual......................................................................................................... 11
4.2 Operation Overview ............................................................................................................ 11
4.3 N/A
4.4 General Specifications......................................................................................................... 12
4.5 Functional Description ........................................................................................................ 12
4.6 Protection Circuits............................................................................................................... 13
4.7 Status Indicators, Controls and Connectors......................................................................... 13
4.8 Data Sheets ................................................................................................................. 16
5.0 PRINCIPLES OF OPERATION
5.1 Proper Usage And Warnings............................................................................................... 17
5.2 Features ................................................................................................................ 17
6.0 IEEE-488 INTERFACE OPTION
6.1 Introduction ......................................................................................................................... 18
6.2 Remote Initialization ........................................................................................................... 18
6.3 GPIB Address...................................................................................................................... 18
6.4 IEEE-488 Commands.......................................................................................................... 19
RS 232 ................................................................................................................. 21
7.0 MAINTENANCE AND SERVICING
7.1 Periodic Maintenance .......................................................................................................... 22
7.2 Servicing The Amplifier...................................................................................................... 22
7.3 Equipment Return Procedure............................................................................................... 23
LIST OF FIGURES
FIGURE DESCRIPTION PAGE
1.0 TWTA ILLUSTRATION ................................................................................................................... 3
2.0 FRONT DISPLAY PANEL START UP MENU ................................................................................ 5
3.0 FRONT DISPLAY PANEL GPIB ADDRESS MENU....................................................................... 6
4.0 FRONT DISPLAY PANEL OPERATE MENU................................................................................. 7
5.0 FRONT DISPLAY PANEL WARM UP TIME.................................................................................. 8
6.0 FRONT DISPLAY PANEL OPERATE MODE WITH RF POWER INDICATION ........................ 9
7.0 SYSTEM BLOCK DIAGRAM......................................................................................................... 11
8.0 REAR PANEL ILLUSTRATION..................................................................................................... 14
LIST OF APPENDICES
SECTION APPENDIX DESCRIPTION PAGE
8.0 A DATA SHEETS.................................................................................................... 24
9.0 B DRAWINGS ......................................................................................................... 25
Rev. A 10/01/08
3
SECTION 1.0
INTRODUCTION
Congratulations on the purchase of your new Wide Band Amplifier from Instruments For Industry,
Inc. Your new Wide Band Amplifier incorporates the finest advancements in the state of the art
electronics technology available in a compact, portable and versatile package. Your Wide Band
Amplifier's quality, performance and trouble free operation depends on you thoroughly reading
through this manual and familiarizing yourself with its proper operation and usage.
Your Wide Band Amplifier comes with the following accessories, be sure to check your packaging
for the items listed below before disposing of the packaging.
CONTENTS
( For a typical Wide Band Amplifier )
Quantity Description
1 TWT High Power Wide Band Amplifier, P/N T251-500A
1 Mating Connector, Power Line
1 Operation and Instruction Manual
1 Data Sheets (Included in Manual )
FIGURE 1.0
OUTLINE DRAWING
Rev. A 10/01/08
4
SECTION 2.0
GENERAL DESCRIPTION
The Instruments For Industry, Inc. ( IFI ) manufactured TWT Wide Band Amplifier is a Bench Top
or rack mount amplifier providing a nominal 500 Watts of RF power from 0.8 to 2.5GHz, with output
power of at least 500 Watts. The minimum saturated output power midband of the operating
frequency range is more than 500 Watts.
The Amplifier features an 8 Line Liquid Crystal Display ( LCD ) that displays continuous forward
and reflected power metering. The display also provide the operator with operating status and self
diagnostic fault indications.
The Amplifier incorporates protection circuits that monitors and controls so the amplifier cannot be
damaged by any mismatched load.
The Amplifier has an IEEE-488 BUS interface which allows the amplifier to be remotely controlled
through the use of a computer and a GPIB BUS.
To operate the Amplifier , connect a three phase power line ( 115 or 230 Vac line to line ), [or a
single phase as specified by the customer] to the Power line MS connector on the rear panel as
shown
Single Phase Connection.
PIN A - PHASE
PIN D – NEUTRAL
PIN E – GROUND
Three Phase Connection.
PIN A – PHASE A
PIN B – PHASE B
PIN C – PHASE C
PIN D – NEUTRAL
PIN E – GROUND
Rev. A 10/01/08
5
TWTA Controller Operation
A) Apply power to the unit using the front panel ON/OFF switch. Start.
Figure 2.0, Front Panel Display – Start-Up Menu
Start-Up Menu
When the circuit breaker or AC power on switch is energized, the above menu will be displayed after
the MPU booting cycle. This menu displays the company information, the amplifier model number
and serial number along with the firmware version used.
From this menu, by selecting the GPIB ADDR button a GPIB address can be set by the control knob
as seen in figure 2. After the address is set, press the RETURN key to return to the main menu.
Rev. A 10/01/08
6
Figure 3.0 Front Panel Display – GPIB address Menu
The Start-up menu will be replaced by Operate menu after about 5 seconds.
Rev. A 10/01/08
7
Figure 4.0 Operate Menu
Rev. A 10/01/08
8
Figure 5.0, Front Panel Showing Warmup time
1. Press the ON Key. The unit will display “FILAMENT WARMUP” and will start the
countdown as set per TWT used. At this mode the Filament, Collector and Grid (if applicable)
supplies will be energized.
2. After the time out, if no faults exist the STB mode will be displayed.
Rev. A 10/01/08
9
Figure 6.0 Front Display Panel Showing Operate Mode with RF Power Indication
1. Place the unit in Operate (OPR) mode. At this mode the TWT will be turned ON.
2. The display will show the Helix and Collector, Voltages and Currents as per TWT operating
data sheet (enclosed in the manual).
Rev. A 10/01/08
10
SECTION 3.0
WARRANTY INFORMATION
Instruments For Industry, Inc. (IFI) warrants each product of its manufacture to be free from any
defect in material and workmanship for a period of three years from shipment to the original
purchaser. All warranty returns, however, must first be authorized by our factory office
representative. Refer to the Service Section for information on how to return items for warranty
repair.
Warranty liability shall be limited to repair or replacement of, or part thereof, which proves to be
defective after inspection by IFI. This warranty shall not apply to any IFI product that has been
disassembled, modified, physically or electrically damaged or any product that has been subjected to
conditions exceeding the applicable specifications or ratings.
IFI shall not be liable for any direct or consequential injury, loss or damage incurred through the use,
or the inability to use, any IFI product.
IFI reserves the right to make design changes to any IFI product without incurring any obligation to
make the same changes to previously purchased units.
This warranty is the full extent of obligation and liability assumed by IFI with respect to any and all
IFI products. IFI neither makes, nor authorizes any person to make, any other guarantee or warranty
concerning IFI Products.
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