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Summary of Contents for ifi T188-250
- Page 1 OPERATING AND MAINTENANCE INSTRUCTIONS MODEL T188-250 HIGH POWER TWT AMPLIFIER DOCUMENT NUMBER T188-250MN.V1.0 Ametek CTS US Instruments for Industry 903 South Second Street Ronkonkoma, NY 11779 Phone 631 467-8400 631 467-8558 Email :...
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Page 2: Table Of Contents
TABLE OF CONTENTS SECTION DESCRIPTION PAGE INTRODUCTION ..........................3 GENERAL DESCRIPTION ........................ 4 WARRANTY INFORMATION ......................10 GENERAL INFORMATION Scope Of This Manual ......................11 Operation Overview ......................11 General Specifications ......................12 Functional Description ......................12 Protection Circuits ....................... 13 Status Indicators, Controls and Connectors ................. -
Page 3: Introduction
CONTENTS ( For a typical Wide Band Amplifier ) Quantity Description TWT High Power Wide Band Amplifier, P/N T188-250 Mating AC Power Line cord Operation and Instruction Manual Data Sheets (Included with the unit) FIGURE 1.0... -
Page 4: General Description
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 output power of at least 250 Watts from 7.0 GHz to 18.0 GHz . The minimum saturated output power midband of the operating frequency range is more than 250 Watts. -
Page 5: Warranty Information
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. -
Page 6: General Information
GENERAL INFORMATION 4.1 SCOPE OF THIS MANUAL This manual is intended to inform a qualified transmitter operator or technician of the normal operating and maintenance procedures for the TWT Amplifier. It is not intended to be a course of instruction for unqualified personnel. 4.2 OPERATION OVERVIEW The Amplifier is designed to amplify a low level microwave signal and supply a high power CW output. -
Page 7: Functional Description
The specifications listed below represent the minimum performance characteristics at the time of delivery. SPECIFICATIONS Frequency Response: 7.0 GHz – 18.0 GHz Power Output: 250 Watts AC Source: 100-240VAC, 50/60 Hz, Single Phase [refer to label information provided on the amplifier] Power Gain: 55 dB Input Impedance:... -
Page 8: Protection Circuits
4.5 PROTECTION CIRCUITS The TWT Amplifier is designed with a variety of protection circuits to provide safeguards for the amplifier should any adverse electrical conditions occur or if the amplifier accidentally experiences operator deviation of the design application. Listed below are the safeguards. 4.5.1 Overheat Protection The TWT, a critical component of this Amplifier, is mounted to a heat sink, which is in turn, air cooled by high efficiency blower. - Page 9 RF AMPLIFIER Front Panel: Rear Panel: POWER ON/OFF Ckt Bkr AC PWR, IEC or MS Power Connector Touchscreen Display RF Input, N Type Female IEEE-488, Connector FWD Sample Port, N Type Female RS232 Remote Control Ethernet Remote Control Interlock RF Output , WRD750 FIGURE 3.0 REAR PANEL ILLUSTRATION Page...
- Page 10 4.7.1 TOUCHSCREEN SOFT KEYS INDICATOR FUNCTION Fault : The FLT RST illuminates Red when either the Helix or the Collector Power Supplies deviate from the design parameters. The Amplifier will revert to AMP OFF mode. It also illuminates when either a Thermal or Airflow condition occurs outside design parameters.
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Page 11: Twt Operating Instructions
4.7 TWT OPERATING INSTRUCTIONS A) Apply power to the unit using the front panel ON/OFF switch. After 5 secs the splash screen will display. Once it displays the Boot-up will start . Figure 4.0, Front Panel Display – Splash Screen Figure 4.1, Front Panel Display –Boot-Up Page... - Page 12 Start-Up Menu After Boot-up the Start-up Menu will show and the amplifier can be controlled either Remotely or Manually. Figure 5 is a typical screen customized to the amplifier Figure 5.0, Front Panel Display – OFF Screen Page...
- Page 13 Turning ON the Amplifier FIGURE 7.0 – TURNING ON THE AMPLIFIER (Typical) 1. Press the OFF/ON Softkey .The unit will immediately start the “FILAMENT WARMUP” and will start the countdown starting with the required time for the applicable TWT incorporated in the amplifier.
- Page 14 FIGURE 8.0 – STANDBY MODE (Typical) 1. Place the unit in OPERATE (OPR) mode. In this mode the TWT will be turned ON. 2. The display will show the Helix and Collector currents as per TWT operating data sheet FIGURE 9.0 – OPERATE MODE (Typical) Page...
- Page 15 FAULTS: All Hard Faults will display in the Status Bar and the Actual Fault will be listed in the Fault Bar. After a Hard Fault to regain control the amplifier the FLT/RST softkey must be pressed. This will put the amplifier in the OFF Mode and you must restart the amplifier. Soft Faults such as VSWR Limit or Interlock Open will only show up in the STATUS bar and turns the amplifier to STANDBY.
- Page 16 OPTION 129S (HARMONIC FILTER) : If the amplifier is configured with Harmonic Filters, the screen will have a Band selection. Band 1 is usually configured as the through Band. This is done as protection, so the filter is not driven out of Band. Band 2 is the Harmonic Filter Band, The Band Frequency limits will be displayed on the Front Panel and also recorded on the data sheet.
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Page 17: Data Sheets
4.8 DATA SHEETS Provided with each Amplifier are specific Test Data Sheets measured from the amplifier using a calibrated 50 Ohm Pad to assist the operator in maximizing the performance of the Wide Band Amplifier. The accuracy of the Metering is ± .5 dB ( nominal ) so to provide the operator with the ability to maximize the performance of the wide band amplifier. -
Page 18: Principles Of Operation
IFI makes available with each shipped amplifier specific data and curves so the operator will know the proper input signal levels to more efficiently operate the amplifier, refer to Paragraph 4.7 herein. -
Page 19: Ieee-488 Interface Option
24-pin socket connector on the rear panel of the unit. IEEE-488.2 Standard is implemented, which defines the protocols and syntax of commands. The GPIB command codes for the IFI Amplifier series are discussed on subsequent pages and, for ease of identification; the command codes are identified within the text by bold capital characters. - Page 20 None RS-422 / RS-485 INTERFACE The IFI Amplifiers have the RS-422 and RS-485, serial interfaces. All amplifier functions can be controlled by coded messages sent over the interface bus via the 9-pin D-type (RS-422) and RJ-11 (RS-485), connector on the rear panel of the unit.
- Page 21 Flow control: None ETHERNET INTERFACE [when applicable] The IFI Amplifiers have an Ethernet Interface. All amplifier functions can be controlled by coded messages sent over the interface bus via RJ-45 connector on the rear panel of the unit. 1.5.1 Description The Ethernet Interface allows the IFI Amplifiers to communicate with and participate in a Local Area Network using RJ-45 cable.
- Page 22 REMOTE COMMAND FORMAT The IFI Amplifiers remote commands are a string of ASCII characters with the following format: Command Code End Of String Characters The Command Code is a three to nine characters command code which the system interprets to determine the type of action to take. See Remote commands below.
- Page 23 1.6.2 REMOTE COMMANDS IEEE COMMANDS FOR TWTA Code TWTA function AMP OFF AMP ON Standby STBY OPRT Operate Fault Reset RESET ATTUxx Increase Attenuation (xx- # of steps) [Response with Gain value, ‘GAIN: XXXXX %’](optional) ATTDxx Decrease Attenuation (xx- # of steps) [Response with Gain value, ‘GAIN: XXXXX %’](optional) BAND Selects Band of Operation &...
- Page 24 POWER AND METERING - STATUS RESPONSES FOR AMP CODE TWTA FUNCTION POWERFWD Returns Forward Power Value in Watts, ‘POWER FWD: XXXXX W’ POWERRFL Returns Reflected Power Value in Watts, ‘POWER RFL: XXXXX W’ HELIXV Returns Helix Volts Value in Volts, ‘HELIXV: XXXXX V’ HELIXI Returns Helix Current Value in milliamps, ‘HELIXI: XXXXX mA’...
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Page 25: Rs-232
REMOTE EXAMPLE CODE RS-232 USB or Ethernet, Example using Hyper-terminal 1. Connect serial port of amplifier to computer using a null modem cable or a standard serial cable with a null modem adapter. 2. Use a program such as Hyper-terminal to communicate with the amplifier. (To find Hyper- terminal go to Start ... - Page 26 See the section 1.6.2 REMOTE COMMANDS for the list of usable commands and responses. REMOTE EXAMPLES Command to read the amplifiers status: ASCII String to amplifier: STATUS(cr)(lf) Hex equivalent of string: 0x53,0x54,0x41,0x54,0x55,0x53,0x0d,0x0a Action: None Response: Responds with the amplifiers current status. Example of response: STANDBY(cr)(lf) Hex value of example response: 0x53,0x54,0x41,0x4e,0x44,0x42,0x59,0x0a,0x0d Command to place unit in operate mode:...
- Page 27 Controlling the amplifier with the web-based interface You can control the amplifier remotely via a web-based interface through a web browser. IMPORTANT Please note that the amplifier and computer must be on the same local network. Obtaining the amplifiers IP address Connect the amplifier to a network by inserting an ethernet cable, and then turn the unit on.
- Page 28 Accessing the web-based amplifier interface Enter the amplifier’s IP address in the address bar of your web browser, using the following format, and then press [ENTER] http://[IP Address]:8000 At this point, any action performed via the web interface or the amplifier’s display, will show in each of the screens.
- Page 29 To change the IP address of the amplifier to a static IP, you can access the ethernet configuration menu of the amplifier from the front display, or remotely. From the front display: Press and hold the [LOC/RMT] button for 8 seconds, and you will be prompted with the following ethernet configuration menu Primary Ethernet IP Address...
- Page 30 Direct Cross-Over Communication with Ethernet Should you want to communicate with the amplifier directly, using a desktop or laptop pc, you can accomplish this by using a cross-over ethernet cable. Cross-Over It is recommended that you first issue an IP to the amplifier via a routers DHCP server, and then configure the amplifier with a static IP.
- Page 31 The MPU was then rebooted with the *RST commanded, and it was verified that the MPU display showed the correct static IP address. Using HyperTerminal, a remote connection was established again, and the same commands listed above were retested. Following this test, the MPU was reset to receive an IP from the DHCP server. Again, using the SETTINGS ->...
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Page 32: Maintenance And Servicing
SECTION 7.0 MAINTENANCE AND SERVICING 7.1 PERIODIC MAINTENANCE The only periodic maintenance required on the TWT amplifier system is insuring that the cooling vents are not obstructed in such a manner that the airflow is restricted. Periodic cleaning of the vents may be required depending on the degree of dust in the atmosphere. -
Page 33: Equipment Return Procedure
For this reason it is important to return the all the accessories with the equipment. It is also IFI's policy to verify performance of all associated accessories of Section 1.0 before returning the equipment to service. -
Page 34: Data Sheets
APPENDIX A TEST DATA SHEETS Page... -
Page 35: Drawings
APPENDIX B Drawings Package 900874 INTERCONNECT DIAGRAM Page...
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