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CONTENTS

Page

SECTION 1 SPECIFICATIONS

Model 202H Characteristics

Module Status Byte Summary

SECTION 2 OPERATING INFORMATION

Description

General

Power Up

Module Installation

Warm Up Requirements

Protection Features

Short Circuit Protection

Over Voltage Protection

Over Current Protection

Over Temperature Protection

Load Requirements

Timing Requirements

Duty Factor

Repetition Rate

Pulse Spacing

Pulse Width

Performance Enhancements

Transition Times and Pulse Width

Minimum Pulse Width

Cables and Load Placement

Non 50 Ohm Loads

Troubleshooting

Front Panel Description

LED Indicators

Connectors

Rear Panel Description

Internal Controls

Polarity Switch

Mainframe Operation

Front Panel Programming

Remote Programming

SECTION 3 THEORY OF OPERATION

Output Board 25

DC Control Circuits

Drive Circuits

Floating DC - DC converter

Содержание 202H

Страница 1: ...Electrical Module Model 202H 2955 Kerner Blvd Suite D San Rafael CA 94901 Ph 415 453 9955 Fx 415 453 9956 www berkeleynucleonics com Instruction Manual...

Страница 2: ...ip under normal use and service for a period of one year If repairs are required during the warranty period contact the factory for component replacement or shipping instructions Include serial number...

Страница 3: ...ements 14 Timing Requirements 15 Duty Factor 15 Repetition Rate 15 Pulse Spacing 16 Pulse Width 16 Performance Enhancements 16 Transition Times and Pulse Width 16 Minimum Pulse Width 17 Cables and Loa...

Страница 4: ...27 General 27 Equipment Required 27 Procedure 28 Power Supply Voltages 28 Output Pulse Amplitude 28 Stepcal Adjustment 28 Drive Level Adjustment 29 Minimum Pulse Width Calibration 29 SECTION 5 PARTS L...

Страница 5: ...3 1 Module Interface Block Diagram 3 2 Output Circuit Block Diagram TABLES Table No Page 1 1 202H Module Status Byte 11 2 1 Typical Duty Factor Maximums for the 202H Module 15 2 2 Typical Pulse Width...

Страница 6: ...injury use safety precautions appropriate for high voltage sources Do not work alone Do not operate with the cover removed Use extreme care when handling output connections Do not connect or disconnec...

Страница 7: ...mage to equipment or devices left connected to the 202H it is recommended that a low voltage setting be stored in memory 0 CAUTION The module must be installed with mainframe power off A module can be...

Страница 8: ...2H is one in a series of output plug in modules that provide electrical and optical pulses when installed in the 6040 mainframe This particular module provides positive or negative electrical pulses w...

Страница 9: ...OUT Amplitude 20 V to 300 V Peak into 50 ohms Baseline fixed at ground Polarity Positive or negative internally selectable Resolution 2 V Linearity 1 Maximum Power 18 W average 1 8 kW peak Maximum Cu...

Страница 10: ...ment s allowable operating conditions and display units STORE Ten complete instrument settings can be stored in the module s nonvolatile RAM The module may be removed without loss of these settings RE...

Страница 11: ...11 SPECIFICATIONS MODULE STATUS BYTE SUMMARY Table 1 1 202H Module Status Byte Bit Description 7 6 5 4 3 2 1 0 Polarity Always Zero Always Zero Always Zero Always Zero Always Zero Locked Overload...

Страница 12: ...me external using the 6040 s TRIG IN jack or single shot A sync signal TRIG OUT is provided in each case see Figure 1 1 Double Pulse operation producing both an initial and delayed pulse out of the sa...

Страница 13: ...tes circuitry to prevent accidental damage to the module due to shorts applied to the output high voltage reflections excessive current demand and over temperature conditions Short Circuit Protection...

Страница 14: ...s are unaffected by it Over Current Protection When the specified duty factor maximum for a given pulse level is exceeded see the Duty Factor section the 202H will go into a current limit state and th...

Страница 15: ...y will respond by decreasing the pulse amplitude and flashing the active front panel LED as described in the Over Current Protection paragraph Table 2 1 Typical Duty Factor Maximums for the 202H Modul...

Страница 16: ...0 V the trailing edge transition time increases as the amplitude decreases The length of the pulse top remains constant when the amplitude is changed and as a result the actual pulse width increases a...

Страница 17: ...pedance mismatch or discontinuity at the load This mismatch will result in reflections of the output pulse as it reaches the load As a result the waveform will exhibit aberrations depending on the deg...

Страница 18: ...t settings into effect as described in the Cold Boot section in the 6040 manual Table 2 3 gives the default settings for the 202H module Table 2 3 202H Module Default Settings The Quick Test procedure...

Страница 19: ...in connector allows the 6040 mainframe to control and communicate with the module and also supplies the power to the module The slide on coaxial connector receives the high speed DRIVE signal from the...

Страница 20: ...ilable for this module is given in Table 2 4 MODE The Mode menu for the 202H has only the Pulse Mode available In this Mode flat topped pulses of specified Width Peak Level and Delay are produced TRIG...

Страница 21: ...amplitude will show increased fall times and will widen correspondingly as measured at 50 points see Table 2 2 LEVEL The Level parameter menu for the 202H allows only the Peak Level selection This may...

Страница 22: ...s on controlling the instrument with remote programming The Module Status command the only command that is specific to the 202H module will be described here PS Module Status This command returns the...

Страница 23: ...pulses of negative polarity The bit is zero for positive polarity If the level is programmed to 0 V the status of this bit is undetermined Bit 2 6 These bits are always zero and are reserved for futur...

Страница 24: ...onnectors J1 and J2 OUTPUT CIRCUIT Figure 3 2 shows the block diagram of the 202H Output board 8 bit data is received by the Interface board shown inside dashed lines and is converted to an analog vol...

Страница 25: ...p for the module Z1 is a dual quad selector Z1A is used to select between one of four 2K byte segments These four segments are used for 1 Z3 the I D ROM 2 Z4 the nonvolatile RAM 3 reserved for expansi...

Страница 26: ...her circuitry is connected to digital ground These are separated to prevent any noise or dc offsets by power supply return currents from affecting the analog control voltages The 20 pin connectors J1...

Страница 27: ...the intended range When the output has settled Z6 enables the feedback loop for accurate adjustment of the output level The polarity of the output pulse is selected manually by switch SI This grounds...

Страница 28: ...and transistors on the floating output section are used for forming the signal that drives the gate of the output FET Q7 Q7 via switch SI connects PULSE OUT to the high voltage power supply PS1 to gen...

Страница 29: ...esult from improper operation up to 2 kW peak power may be contacted To avoid personal injury use safety precautions appropriate for high voltage sources Do not work alone Use extreme care when operat...

Страница 30: ...Level to 300 V set Trigger to 1 kHz Internal Trigger and set Width to 500 ns Store these settings in memory 1 Adjust the scope so that it reads the pulse top amplitude 400 ns after the leading edge of...

Страница 31: ...dissipation in the FET There should be less than 40 V difference between the two levels representing the drop across the FET and the 1 5 ohms resistor R14 If necessary recalibrate the output pulse amp...

Страница 32: ...6 110 033 0 1 F 20 50 V CER MONO R2 223 016 4 7 KX 9 SIP RES NETWORK C7 110 33 0 1 F 20 50 V CER MONO R3 244 011 1K PC MT MULTITURN C8 110 033 0 1 F 20 50 V CER MONO R4 244 011 1K PC MT MULTITURN C9 1...

Страница 33: ...015 33 F 10 25 V TAN C56 110 033 0 1 F 20 50 V CER MONO C11 110 021 0 01 F 20 16 V CER C57 110 033 0 1 F 20 50 V CER MONO C12 110 033 0 1 F 20 50 V CER MONO C58 110 033 0 1 F 20 50 V CER MONO C13 110...

Страница 34: ...032 140 K 1 W MF 08 430 049 2N5583 R34 213 103 10 K 5 W COMP 09 431 046 2N6660 R35 213 103 10 K 5 W COMP 010 430 049 2N5583 R36 213 105 1 M 5 W COMP 011 430 031 MPS 5L72 R37 213 104 100 K 5 W COMP 012...

Страница 35: ...221 220 OHM 5 W COMP R66 213 131 130 OHM 5 W COMP Z1 440 134 10H102 Z2 440 184 10H125 R67 213 820 82 OHM 5 W COMP Z3 440 156 74HC74 R68 214 512 5 1 K 5 W COMP Z4 440 211 MOC8204 R69 214 101 100 OHM 5...

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