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Model 40T26G40A

6

Rev A

Amplifier gain is set by the voltage-controlled variable gain attenuator. The control head determines the
output of a digital-to-analog converter (DAC) on the HPA interface board. The output of the DAC controls
the attenuator’s loss.

The emergency bypass board (A24830-001) is mounted behind the front panel. It is provided with a circuit
that increases the attenuation so that reflected power is limited to a level on the order of 10 watts. In
emergency bypass operation (see section 3.7), the gain control signal is provided locally by means of a
potentiometer on the emergency bypass board. The foldback circuits remain on line during emergency bypass
operation.

2.3 DESCRIPTION OF THE POWER SUPPLY (A22826-352)

The TWT’s power supply is of modular construction. Low-voltage power for logic and control of the entire
power supply assembly is provided by the low-voltage power supply module (A23687-001). In addition, this
module provides Direct Current (DC) power for the HPA interface and emergency bypass boards. Control
logic and TWT protection circuits are contained in the HPA Logic and Control Assembly (A16485-488).

The Heater Power Supply Module (A25963-000) powers the TWT DC heater. In addition, the millimeter
wave TWT has a grid modulator (A23684-352).

The high-voltage power supply consists of the following: the Power Factor Correction Module (A23683-100)
converts line voltage to DC for the high-voltage switching supply. Switching transistors are on the Power
Board Assembly (A23710-000), and switching is controlled by the Pulse Width Modulation (PWM) Board
(A10017-488). The high-voltage transformer and rectifiers are contained in the High-Voltage
Diode/Capacitor Assembly (A23707-488). The high-voltage DC is filtered in the HV Filter Assembly
(A21461-488).

Low-voltage interconnects between the power supply modules are through a motherboard. It is installed in a
finned heat sink assembly to which the modules are bolted. The heat sink is cooled by the incoming cabinet
air. The Heat Sink/Motherboard Assembly is A23709-000.

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Содержание 10009284

Страница 1: ...Operating and Service Manual 40T26G40A Model 10009284 Part Number Serial Number 160 School House Road Souderton PA 18964 215 723 8181 Fax 215 723 5688 www arworld us ...

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Страница 3: ...EEC EMC Directive 89 336 EEC and Low Voltage Directive 73 23 EEC in accordance with the relative standards listed below EMC EN 50082 1 1992 Electromagnetic compatibility Generic immunity standard EN 50081 1 1992 Electromagnetic emissions requirements for Industrial Scientific and Medical ISM Equipment Safety EN 60950 1995 The CE marking is affixed on the device according to the EC Directives Donal...

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Страница 5: ... clearance on all vented sides of the equipment to permit the airflow required for proper ventilation Do not restrict airflow into the equipment by blocking any vents or air intakes Restricting airflow can result in damage to the equipment intermittent shut downs or safety hazards Keep equipment away from extremely hot or cold temperatures to ensure that it is used within the specified operating r...

Страница 6: ...na assembly may be heavy requiring two persons to lift Use caution when installing or removing unit Follow all equipment setup and lifting instructions specified in this document Ensure connectors are appropriate for intended operation Connectors are specified in the user manual and product specification sheet Do not exceed the maximum RF input level stated in the specifications Refer to the user ...

Страница 7: ...fications to the machine may have been made use this information only as a guide Carefully compare the unit s actual configuration and operation to the descriptions in this manual before you undertake to operate service or modify this machine Any variance or modification should be noted dated and initialed in the discrepant part of all manuals on hand for future reference If you have technical or ...

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Страница 9: ...equency with Gain set to 100 apply RF drive that will provide rated power This will help indicate if the gain or power is changing and if the traveling wave tube or pre amp needs service Record the following a RF Drive Level b Forward Power c Reverse Power d Body Current Iw e Sample Port Power reading if possible 3 Remove air intake filter and clean using compressed air and or vacuum cleaner 4 Ens...

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Страница 11: ...8 RF Connector 10 3 3 Front Panel Features 11 3 4 Front Panel Display and Soft Keys 12 3 5 Rear Panel Features 16 3 6 Initial Turn On and Warm up Procedure 16 3 7 Emergency Bypass Operation 17 3 8 Remote IEEE 488 Operation 18 3 9 TWTA General Considerations 23 4 MAINTENANCE 25 4 1 Safety Warning 25 4 2 Unauthorized Repairs 25 4 3 Preventive Maintenance 25 4 4 Troubleshooting 26 4 5 Non Repairable ...

Страница 12: ... Front Panel 11 3 3 TWTA Front Panel Display Screens 12 3 4 TWTA Rear Panel Features 16 TABLES 3 1 TWTA Front Panel Features 11 3 2 TWTA Rear Panel Features 16 3 3 Catalog of IEEE 488 Commands 18 3 4 Catalog of Status Codes 19 3 5 Catalog of Fault Code Returned by RDFLT Command 20 3 6 Catalog of System State Codes 21 3 7 STA Response Codes 21 3 8 STB Response Codes 22 3 9 Catalog of Heater Auto Of...

Страница 13: ...it is 25 25 inches deep excluding the rear panel connectors For bench top use the amplifier is supplied in an enclosure with integral carrying handles Primary power is 99 260 volts 50 60 Hz single phase An efficient switching power supply design provides minimum power consumption A fast regulation control loop and a high degree of filtering ensure performance within specifications over a wide rang...

Страница 14: ...Model 40T26G40A 2 Rev A 1 5 TEST DATA SHEET A Test Data Sheet for a specific unit is prepared at the time of manufacture and is included with the unit s copy of this manual ...

Страница 15: ... broadband traveling wave tube TWT microwave amplifier designed for applications where wide instantaneous band width high gain and moderate power output are required A reliable TWT provides a conservative 40 watts minimum at the amplifier output con nector Stated power specifications are at the fundamental frequency The amplifier s front panel digital display shows forward and reflected output plu...

Страница 16: ...pulse modulation appearing on the input signal AM peak envelope power limited to specified power VIDEO PULSE CAPABILITY S8V OPTION Pulse Width 0 1 microseconds min Pulse Rate PRF 10 kHz max RF Rise and Fall 30 ns max 10 to 90 Delay 300 ns max pulse input to 90 RF PW Distortion 30 ns max NOISE POWER DENSITY Minus 60 dBm Hz maxi mum Minus 70 dBm Hz typical HARMONIC DISTORTION Minus 20 dBc maximum Mi...

Страница 17: ...ed over speci fied frequency response S2F Flatness Flatness 6 dB max at rated power S3F Reflected power port type K female connector on front panel Forward and reflected sample port calibration data supplied on disk in Excel format at 51 points evenly spaced over speci fied frequency response S4F RF input connector On front panel not on rear panel S5F Forward output sample port On front panel not ...

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Страница 19: ...input is fed to the solid state preamplifier via an input isolator E20375 000 The solid state preamplifier s output passes through a voltage controlled attenuator E20369 000 to drive the RF input of the TWT Some units are provided with an RF equalizer E01462 000 adjusted to achieve the 40T26G40A flatness specification The RF output of the TWT is WRD 180 waveguide flange After a transition to WR 28...

Страница 20: ...01 In addition this module provides Direct Current DC power for the HPA interface and emergency bypass boards Control logic and TWT protection circuits are contained in the HPA Logic and Control Assembly A16485 488 The Heater Power Supply Module A25963 000 powers the TWT DC heater In addition the millimeter wave TWT has a grid modulator A23684 352 The high voltage power supply consists of the foll...

Страница 21: ...as been unplugged and it has been positively established that the high voltage filter capacitors have been discharged to a known safe level WARNING Safety Ground Improper grounding of this equipment can result in electric shock The TWTA must be operated only with a line cord with a safety ground wire It is the user s responsibility to ascertain that the power connector is properly wired and that t...

Страница 22: ...N Never rack mount the TWTA using the front panel alone The chassis is likely to be damaged unless its weight is supported Bottom support rails must be provided in a rack mount configuration See Figure 3 1 for the locations of threaded holes that may be used for supplementary support of the rear of the TWTA If bottom supports are used for rack mount installation of multiple units the amplifiers sh...

Страница 23: ...lifier will operate from any line voltage between 99 and 260 VAC 3 2 5 RF Output Connection The RF output is a WR 28 waveguide flat flange Output flange alignment is critical for proper operation of the amplifier Use 4 hardware equivalent Align the two output flanges and secure the mating waveguide while maintaining flange alignment CAUTION Never operate the TWTA without a matched output load rate...

Страница 24: ...tion system Users may adopt this interlock feature to disable the RF output for either equipment protection or as a backup for personnel protection CAUTION Do not rely on the external interlock for personnel protection The intent of the external interlock feature is to disable the RF output for equipment protection Use proper operating and safety procedures to insure that power is removed for pers...

Страница 25: ...nd heater delay are cleared 3 STANDBY Push button shuts off TWT beam and turns off high voltage 4 ADJUST Rotary knob used as an input device to change values of a variety of parameters 5 EXIT Push button terminates various menu selection routines and returns to the previous menu level 6 9 S1 S4 Soft key push buttons various menu selection functions 10 Display Displays numerous parameter values and...

Страница 26: ...a number of informational screens are programmed It is important for the operator to be able to select the screen with the required information Screen selection is accomplished by pressing an appropriate soft key or by pressing the EXIT key When a soft key is active its function is displayed on the bottom line of the display Figure 3 3 provides a roadmap for navigating between the screens Figure 3...

Страница 27: ...ower supply and put the HPA into Sleep Mode see below Pressing S1 SET toggles between On and OFF Pressing MORE again brings up the SETUP 2 screen which allows the user to change the Auto Sleep Mode timer setting Pressing SET will change the timer options in half hour increments from 0 5 to 3 0 hours Pressing MORE again will save the timer setting and bring up the SETUP 3 screen which toggles the d...

Страница 28: ...he cause Pressing more brings up WARNINGS 2 which allows the under forward power set point to be entered Adjusting this to the minimum value causes OFF to be selected disabling this alarm In WARNINGS 3 the maximum reflected power level is set Note that these are warning levels at which the beep sounds the actual maximum reflected power level that generates a system fault is set in hardware in the ...

Страница 29: ...al state of the TWTA is used as a fault display line until the fault is cleared When the fault clears the system will automatically resume the standby state and high voltage on will be enabled once again Factory Service Screens A number of screens intended for factory service and calibration are behind passwords and are not accessible to the user System Malfunction Screens A number of screens are ...

Страница 30: ...Provide an RF generator to the RF input Type K connector A1J1 Set RF generator level below 50 dBm and set desired frequency in specified range Connect a load suitable for 100 watts continuous operation to the output waveguide The load VSWR should be less than 2 0 1 A power meter and suitable attenuators may be connected to the RF sample port A1J2 or optional reverse power sample port Refer to RF s...

Страница 31: ...l of the TWT It is at a minimum with no RF drive The helix currents with no drive and with rated RF output mid band are logged on the test data sheet The value of the helix current is a good qualitative indicator of RF drive present To shut the system down turn down the RF generator level below 50 dBm and press STANDBY Allow the TWTA to cool down until the TWT temperature drops below 60 C then tur...

Страница 32: ... grid or anode voltage V Eg Ea RDEF Returns heater voltage V Ef RDIF Returns heater current A If RDIW Returns helix current mA Iw RDTMPTWTF Returns TWT temp F F TWTF F RDTMPTWTC Returns TWT temp C C TWTC C RDTMPPSF Returns power supply temp F F PSF F RDTMPPSC Returns power supply temp C C PSC C RDTWTOTF Returns TWT overtemp warning setpoint F F TWTOTF F STWTOTF Sets TWT overtemp warning setpoint F...

Страница 33: ...M OFF Emulates pressing the Power Save button Enter Sleep Mode RDHTRAUTOOFF Returns heater auto off delay hours SHTRAUTOOFF Sets heater auto off delay see Table 3 9 IDN Returns the product model number STA Returns status string see Table 3 7 STB Returns status string see Table 3 8 Table 3 4 Catalog of Status Codes The RDSTAT command causes the TWTA to return a string in the form STATUS code where ...

Страница 34: ... 0 No fault 7 System Fault 8 Fil not ready 9 Low Line 10 Cathode overvoltage 11 Body overcurrent 12 Cathode undervoltage 15 Collector undervoltage 16 Inverter fault 17 Internal interlock open 18 Tube arc 19 TWT hardware overtemperature 20 Cabinet hardware overtemperature 22 External inhibit 23 Over reverse power 30 Grid or anode overvoltage 49 TWT software overtemperature 50 Cabinet software overt...

Страница 35: ...LSB Heater time delay expired 5 Under forward power warning 6 Foldback active 7 MSB Inhibit mode x bit Meaning 8 LSB External inhibit 9 Interlock open 10 not used 11 MSB not used w bit Meaning 12 LSB not used 13 Sleep Mode Active 14 not used 15 MSB not used Table 3 7 STA Response Codes The command STA causes the TWTA to send a string indicative of the current system state STA response Meaning SLEE...

Страница 36: ...hour heater auto off time delay 5 3 0 hour heater auto off time delay Command syntax is in this form command mnemonic parameter carriage return where command mnemonic consists of one of any valid command found in Table 3 3 parameter as applicable consists of one ASCII space character followed by a number and carriage return consists of an ASCII carriage return All commands are case sensitive The s...

Страница 37: ...o rf drive Such operation for about one hour on a weekly basis should effectively reduce nuisance tripping Since the cathode structure has finite life extended periods of non functional operation of TWTAs is not recommended An alternate approach if periodic trip off has been observed is to operate the unit without RF input for 1 2 hours before planned functional operation resetting the unit after ...

Страница 38: ... can be released thus corrupting the vacuum of the tube If the tube become too gassy arcing may occur when the high voltage is fully applied in the Operate mode Another possible failure mode is a body over current fault when the beam is turned on and the tube is gassy Occasional arcing is normal for a TWT The support components are designed to handle this protecting both the TWT and its support ci...

Страница 39: ... malfunctioning power supply can cause damage to the TWT If you are troubleshooting the TWTA remove the TWT and substitute suitable loads to prevent damage to the TWT 4 2 UNAUTHORIZED REPAIRS CAUTION Unauthorized repairs or modification of this product during the warranty period may void the warranty In the event that the TWTA malfunctions while it is still under warranty always contact an authori...

Страница 40: ...pen interlock switch open Control module display does not come up unit does not beep when powered up Shorted or defective control module power supply Control module failure Control module does not boot EPROM s missing EPROM pins are bent 64 conductor ribbon cable is defective Control module datalink failure error or Communication Problem error appears HPA interface failure Fiberoptic link failure ...

Страница 41: ...gh Voltage Diode Capacitor Assembly A23707 488 the High Voltage Filter Assembly A21461 488 and the Heater Supply A25963 000 are encapsulated modules and are therefore not repairable Contact an authorized service representative if replacement modules are needed ...

Страница 42: ...Model 40T26G40A 28 Rev A ...

Страница 43: ...ian level servicing It is intended for use by qualified technical personnel who must troubleshoot and repair the TWTA in the field Such repairs are typically limited to replacement of modules or major components For this reason only documentation pertaining to the highest levels of the system and to system control logic is included ...

Страница 44: ...ENCE SUPPLY XFMR 1A1A8A1T2 A09228 000 FEEDBACK XFMR HAND WOUND 1A1A8A1T3 A09595 110 1100V BIAS SUPPLY XFMR 1A1A8A1T4 T5 A09230 000 XFMR GATE DRIVE HAND WOUND 1A1A8A1T6 A09598 064 TOP AND AUXILIARY SUPPLY XFMR 1A1A8A2 A16486 064 MODULATOR S CONTROL BOARD FOR TWT3864C 1A1A9 A25963 000 HEATER MODULE MM WAVE 1A1A9T1 A09409 000 XFMR HEATER FEEDBACK 1A1A9T2 A09408 000 XFMR HEATER POWER 1A1A10 A10017 352...

Страница 45: ...l 40T26G40A Rev A 31 5 2 SCHEMATICS 10 16485 000 10 24830 000 10 25444 000 10 28050 352 HPA Logic and Control A16485 000 Emergency Bypass Board A24830 001 HPA Interface A25444 000 HPA 40T Series A28050 352 ...

Страница 46: ...Model 40T26G40A 32 Rev A ...

Страница 47: ...ssembly A22826 352 Power supply for Teledyne TWT A24830 001 Emergency bypass board for reflected foldback A25444 000 HPA interface A28050 352 HPA 40W 26 5 40 GHz AR A28051 002 Microwave power assembly Ka band 40 watt Teledyne tube A28052 000 Wiring kit for 40T series K Ka TWTA ...

Страница 48: ... PIN MALE D SUB PCB RIGHT ANGLE AMP 747252 4 1 J18075 000 MALE SCREW LOCK FOR D SUBMIN CONN AMP 205817 1 1 J4 J5 J18086 000 CONN SMA JACK RECEPTACLE RIGHT ANGLE 0 18GHZ PC MOUNT JOHNSON COMPONENTS 142 0701 301 2 J1 N25003 000 HYPERTRONICS CONN 29 PIN MALE RIGHT ANGLE CUT ENDS 1 Q2 Q22907 000 TRANSISTOR PNP 2N2907A TO 18 1 R1 R9 R19 R37 R44 R50 R00100 000 RES 10 OHM 1 4W 5 CC A B RC07GF100J 6 R4 R2...

Страница 49: ...RN55D 1 R12 R15 R32020 000 TRIMPOT 10K 1 2W 10 CERMET 20T SIDE ADJ BECKMAN 67X 2 U4 U5 U6 U02390 000 IC QUAD COMPARATOR NAT LM139J 3 U7 U03240 000 IC LOW POWER OP AMP NAT LM324 1 U9 U10070 000 REFERENCE PRECISION 10V LINEAR TECH LT1031DCH 1 U8 U17805 000 IC 5V REGULATOR TO 220 NAT LM340T 5 0 1 U1 U2 U3 U20148 000 IC HEX INVERTER SCHMIDTT TRIGGER 74HC14 SSD 3 RP8 U30106 000 IC 10K RES NETWORK 6 PIN...

Страница 50: ...488 HV FILTER FOR TWT MEC 5488 1 A4 A23683 100 POWER FACTOR MODULE 500W 1 A8 A23684 352 GRID MODULATOR FOR MEC 5496 1100V BIAS 0V TO 50V ADJUSTABLE PULSE TOP 1 A2 A23687 001 LOW VOLTAGE POWER SUPPLY MODULE 1 A6 A23707 488 HV DIODE CAP ASSY FOR TWT MEC 5488 1 A1 A23709 000 HEAT SINK MOTHER BOARD ASSY 1 A5 A23710 000 POWER ASSEMBLY FOR 100WKU 1 A11 A25391 488 FACTORY SELECT PARTS FOR TWT MEC 5493E 1...

Страница 51: ...COMPONENTS 142 0701 301 1 J1 J18180 000 CONN D SUB 15 PIN MALE STRAIGHT PCB MOUNT POSITRONIC MD15M3000 1 Q1 Q3 Q22222 000 TRANSISTOR NPN 2N2222A TO 18 3 Q4 Q5 Q22907 000 TRANSISTOR PNP 2N2907A TO 18 2 R18 R23 R01100 000 RES 100 OHM 1 4W 5 CC A B RC07GF101J 2 R21 R01150 000 RES 150 OHM 1 4W 5 CC A B RC07GF151J 1 R19 R02100 000 RES 1K 1 4W 5 CC A B RC07GF102J 1 R3 R5 R7 R02220 000 RES 2 2K 1 4W 5 CC...

Страница 52: ...2 113 114 115 116 117 121 125 132 167 C31036 000 CAP 0 1MF 100VDC 10 CER 1 FAILURE KEMET CKR06 SERIES W V OPTION 61 C12 C14 C21 C27 C29 C31 C34 C36 C38 C17 C18 C19 C37 C54 C55 C56 C57 C58 C59 C60 C61 C118 C119 C120 C122 C123 C124 C133 C46 C52 C66 C68 C72 C75 C82 C84 C86 C90 C92 C93 C95 C104 C106 C31040 000 CAP 1MF 50VDC 10 CER 1 FAILURE KEMET CKR06 SERIES W V OPTION 44 D8 D10 D16 D18 D19 D14007 00...

Страница 53: ...LE RN55D 1 R59 R22332 000 RES 33 2K 1 2W 1 MF 100PPM DALE RN55D 1 R3 R5 R30071 000 TRIMPOT 10K 1 2W 10 CERMET 100PPM 20T TOP ADJ BECKMAN 67W 2 R9 R12 R15 R22 R35 R36 R40 R44 R30103 000 RES 10K 1 8W 1 MF AXIAL 100PPM DALE CMF 50 RN50C1002F 9 R17 R19 R20 R21 R23 R25 R28 R31 R42 R43 R46 R18 R30140 000 RES 1K 1 8W 1 MF 50PPM DALE RN50C 12 R13 R14 R24 R26 R27 R29 R32 R37 R38 R39 R47 R31164 000 RES 100K...

Страница 54: ...2 U45 U24138 000 IC 8 BIT BINARY DOWN COUNTER 74HC40103 SSD 1 U43 U26889 000 IC 8 BIT MAGNITUDE COMPARATOR 74HCT688 SSD 1 U22 U24 U57 U28008 000 IC QUAD 2 INPUT AND 74HC08 SSD 3 U4 U49 U58 U28032 000 IC QUAD 2 INPUT OR 74HC32 SSD 3 U44 U46 U28040 000 IC 12 BIT DECADE COUNTER 74HCT4040 SSD 2 U5 U13 U14 U23 U25 U33 U50 U28074 000 IC DUAL D FLIP FLOP W RESET 74HC74 SSD 7 U2 U28123 000 IC DUAL RETRIGG...

Страница 55: ...5496 1 A6 A23692 000 INSULATED FAN DRIVER 1 A5 A24830 001 EMERGENCY BYPASS BOARD 1 A4 A25444 000 HPA INTERFACE BOARD PLASTIC FIBERS 1 A10 A27742 001 LOW PROFILE CABINET ASSY K AND KA BAND 1 A3 A27752 300 AR TWTA CONTROL ASSY 1 A2 A28051 002 MICROWAVE POWER ASSEMBLY KA BAND 40 WATT TWT WITH BAND EDGES ENHANCED 1 A9 A28052 000 WIRING KIT 40W K KA BAND 1 ...

Страница 56: ...0319 000 CABLE ASSY 30 GHZ K MALE TO K MALE 8LONG ASTROLAB MINIBEND K 8 6 A7 E20365 000 DIRECTIONAL COUPLER 10 DB 26 5 40 GHZ TYPE K KRYTAR 184010K 1 A2 E20369 000 VOLTAGE CONTROLLED ATTEN 26 5 40 GHZ 0 35DB WR 28 0 5 VDC CONTROL VOLTAGE QUINSTAR QAV2802CB 1 A1 E20375 000 COAXIAL ISOLATOR 1 4 1 VSWR KA BAND 26 5 40 GHZ DITOM DF3797 1 E21002 000 ADAPTER K M K M ANRITSU K220B 1 E21003 000 ADAPTER K ...

Страница 57: ...1020 000 CONN PIN SOCKET 2 PIN MALE MOLEX 03 09 2021 1 P11 P13 J01021 000 CONN MALE 2 PIN 063 MOLEX 03 06 2023 2 P32 J01031 000 CONN MALE 3 PIN 063 MOLEX 03 06 20332 1 XP14 XP30 J03000 000 TERMINAL PIN SOCKET TYPE PIN FEM CRIMP MOLEX 02 09 1118 3 XP11 XP13 XP32 J03013 000 CONN PIN MALE 063 MOLEX 002 06 2103 7 XJ1 J04000 000 TERMINAL PIN SOCKET TYPE MALE CRIMP MOLEX 02 09 2118 2 XP10 XP12 XP31 J040...

Страница 58: ...LLINOIS LOCK HD5161 AACCM 100 090 041G WITH KEY E100 1 U1 U2 U00052 000 PRECISION CELSIUS TEMP SENSOR TO 220 NATIONAL LM35DT 2 W01880 000 WIRE 26 AWG COAXIAL RG 188A U 900V BELDEN 83269 8 W11400 000 WIRE 14 AWG 600V BLUE ALPHA 5859 8 W11800 000 WIRE 18 AWG BLUE BELDEN 83009 4 W12200 000 WIRE 22 AWG BLU 600V TEFLON BELDEN 83006 8 W21600 000 POWER CORD 3 COND 16 AWG 125V 13A 10 FEET 3 PIN MALE TO 3 ...

Страница 59: ...ARON D McCLURE 1040 1041 DIM F 80 1042 DIM A 80 1050 CLEAR SCREEN 1060 INPUT INPUT COMMAND TO SEND TO POWER SUPPLY EXIT TO QUIT A 1070 IF A EXIT THEN 1130 1080 OUTPUT 701 A 1090 IF A 1 2 RD THEN GOTO 1060 1095 IF A 1 1 THEN GOTO 1100 1100 ENTER 701 F 1110 PRINT OUTPUT FROM COMMAND A IS F 1120 GOTO 1060 1130 CLEAR SCREEN 1140 END ...

Страница 60: ...Model 40T26G40A 46 Rev A ...

Страница 61: ... cover If the security label is removed and or cut the warranty of the module will be voided Vacuum tubes in the L series amplifiers traveling wave tubes in TWT amplifiers and power heads will be free from defects in material and workmanship for a period of one 1 year Contact AR RF Microwave Instrumentation for warranty information regarding items not listed Seller s sole responsibility in fulfill...

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