6900K6 Series 20 Watt TWT Amplifier Features • IEEE-488 • CIIL/MATE Compatible • Talker and Listener • Interface Built-In • CE marked and TUV approved The 6900K6 Series are GPIB controllable versions of the popular CPI 6900K4 series low power commercial TWT amplifiers. CPI 6900K6 series TWT amplifiers are manufactured with the same quality as all CPI amplifiers and are backed by CPI’s worldwide 24-hour customer support network that includes 9 regional factory service centers. Quality, reliability and product support are integral parts of your CPI power amplifier. Model # VZC-6961K6 VZX-6981K6 VZU-6991K6 VZM-6991K6 VZV-2776K6 Power (Watts) 20 20 20 20 20 Freq (GHz) 4-8 8-12.4 12.4-18 8-18 4-18 Gain (dB) 35 40 40 40 30 O/P Conn N N N N N These units can function as either a GPIB Listener or a Talker; i.e., the TWTA can be controlled by the external computer and report on its status. When addressed as a Listener, the TMA causes the amplifier to take some action such as turning high voltage ON. When addressed as a Talker, the amplifier sends back information on its operating or fault condition. Local operation is possible by enabling the front panel controls; however, incoming Bus commands will override the front panel unless an internal safety switch has been set to prevent it. Two control languages are included; CPI Simplified Language (CSL) and a version of the Air Force’s Control Interface Intermediate Language (CIIL). An internal switch allows quick selection of language. Specifications Refer to CPI 6900K4 Series data sheets for detailed specifications of the basic unit. This data sheet covers only those specifications which apply to the interface itself. Listener Functions • High Voltage ON/OFF • Fault Reset • Heater ON/OFF Talker Functions • Heater Power ON • HV ON • Summary Fault • Interlock Fault • Heater Time Delay • Standby • Helix Fault • Thermal Fault Data Interface IEEE Std. 488-1978. Driver and receiver circuits are fully Bus compatible. Receivers contain Bus terminating resistors and have 500 mV hysteresis. Drivers are open collector devices, capable of driving up to 14 other Bus compatible devices. Power up/down protection is included to prevent transmitting invalid data to the Bus or holding the Bus when power is off. Format Sixteen lines, eight for data and eight for control and status messages. Data transfer is byte serial using a three-wire handshake per IEEE-488 Standard. Address Capability Unit recognizes 31 primary addresses (address 0 through 30) or 31 secondary addresses with a fixed primary address of 17 (address 1700 through 1730). Interface Handshake Repertoire: Function Source Handshake Acceptor Handshake Talker Extended Talker Listener Extended Listener Service Request Parallel Poll Remote/Local Device Clear Device Trigger Controller Bus Driver Code SH1 AH1 T5 TE5 L3 LE3 SR1 PP1 RL0 DC1 DT1 C0 E1 Comments Implemented Implemented Implemented Implemented Implemented Implemented Implemented Implemented Not Implemented Implemented Implemented Not Implemented Open Collector Language CPI Simplified Language (CSL) A simplified version of CIIL. All commands enclosed in brackets are deleted. In addition, the SRQ function is enabled allowing serial and parallel polling as well as the “D” command status request. Control Interface Intermediate Language (CIIL) Compatible per proposed MATE System Control Interface Standard No. 2806763 Rev. B. Several non-CIIL approved noun modifiers have been defined as required by a TWTA. CIIL required commands are indicated herein enclosed by brackets [ ]. Listener Operation Codes and Statements Function Op-Code FNC = Function CHØ = Channel Ø SET = Set RST = Reset STA = Status Set-Up Statements Set-Up to Standby FNC [SGC : CHØ Noun SGC = Signal Conditioner SET GAIN 50 SET] VLST Modifier GAIN = Gain VLST = Standby VLON = Voltage ON CR [LF] If this command is received during the ON mode, high voltage will be switched OFF and the amplifier placed in Standby; i.e., heater ON, high voltage OFF. If this command is received when the heater is OFF, the heater will be switched ON and the amplifier will switch to Standby at the end of the Heater Time Delay period. Set-up to ON FNC [SGC :CNØ SET GAIN 50 SET] VLON CR [LF] If this command is received when the amplifier is in Standby, the High Voltage will be switched ON. If this command is received when the amplifier is still in Heater Time Delay, High Voltage will be switched ON at the end of the delay period. If this command is received when the heater is OFF, the heater will be switched ON and the amplifier will switch to High Voltage ON at the end of the Heater Time Delay period. Reset Statement RST [SGC :CHØ] CR [LF] Upon receipt of this command, the High Voltage is switched OFF. If it is ON the heater is switched OFF and any faults reset. Status Statement STA [SGC] CR [LF] Upon receipt of this command, the TMA prepares a current status response. This command must be issued before addressing the TMA as a Talker. Status Message when addressed as a Talker: Command Accepted: [Space] CR LF Fault: FØ7TWTA:(fault message) Priority Fault Messages 1 2 3 4 5 6 7 8 SYNTAX ERROR THRM OVERLOAD HELX OVERCURRENT INTERLOCK FAULT DUTY CYCLE TRIP PRF TRIP GRID FAULT SUMMARY FAULT Heater Time Delay: FØ6TWTA:AMP TIMING CR LF CR LF Mechanical & Environmental Same as 6900K4 Series Special 488 Functions Device Clear/Selected Device Clear: Causes all relays to de-energize and then assume initial pattern. Additionally, Device Clear and Selected Device Clear output a clear pulse on the Clear lines, initialize the program flags and pointers and clear memory. IFC: IFC clears all Bus Interface functions and, if CLEAR switch on rear panel is on, will cause all relays to de-energize and then assume PROM programmed initial pattern and generate a clear pulse on the Clear lines. SRQ (CSL mode only): Generates a Service Request Interrupt (SRQ) when external data is received if not addressed as a talker. SRQs can be completely inhibited by depressing the front panel SRQ INHIBIT switch. The SRQ signal is reset when the TWTA is addressed to talk or when Serial Polled. Serial Poll Response: The TMA responds to a serial poll by placing an 8-bit character on the Bus data lines. The bit assignments are: DI0 1 DI0 2 DI0 3 DI0 4 DI0 5 DI0 6 DI0 7 DI0 8 Heater Time Delay Standby HV ON Zero Command not executed, syntax error causes RSV bit (DI0 7) to be set. Summary Fault RSV Zero Parallel Poll Response: The TMA responds to a parallel poll by placing the Ready Status condition in the bit selected by the PPE command. The bit is a logic ‘1’ if the RDY light is ON, logic ‘0’ if OFF. The Ready Status is determined by the Summary Fault condition; i.e. Not Summary Fault = Ready. Status Request: Syntax: Response: D CR LF D n n n (Where n represents a status character)* Character Bit Definition 1 – ASCII D 2 3 2 1 Ø Heater Time Delay High Voltage ON Standby Mains Power ON 3 3 2 1 Ø Interlock Fault Thermal Fault Helix Fault Summary Fault 4 3 2 1 Ø Remote Grid Fault Frequency Trip Duty Cycle Trip * A three-character argument is returned in response to the summary status query. Each character contains 4 bits of information. The bits are represented in ASCII hexidecimal notation (00H-0FH). Controls and Indicators Controls Mains Power ON/OFF Front Panel Enable Reset Standby Operate CIIL Enable: Internal switch. Disables service request interrupt Address Switches: Talk, Listen and Secondary Address switches (MTA, MLA, MSA) Indicators: Mains Power ON Filament ON Standby Operate Summary Fault Helix Fault Note: Characteristics and operating values are based on performance tests. These figures may change without notice as a result of additional data or product refinement. Please contact CPI before using this information for system design. satcom division Communications & Power Industries Canada, Inc. 45 River Drive / Georgetown, Ontario / Canada L7G 2J4 TEL: 905-877-0161 / FAX: 905-877-5327 E-MAIL: [email protected] / WEB: www.cpii.com/cmp IAMP12 03/04