Equipment information

Wavetek 1391 Generator
Manufacturer:
Model:
1391
Date:
1992
Category:
Group:
Description:
50 MHz VXI Pulse Generator

Information

The Model 1391 is a 1 mHz to 50 MHz "C" size VXI Programmable Pulse Generator. It can generate single, double, and delayed pulses with programmable period, width, delay, rise/fall transitions, and output levels. The Generator operates as a continuous, triggered, gated or burst pulse source up to 50 MHz. Additionally, the Model 1391 can be programmed for a square wave function (*50% time symmetry) up to 100 MHz. Pulse characteristics are programmable with 4 digit resolution, with width and delay up to 2000 seconds, and rise/fall transition times settable from 5 ns to 50 |is. The pulse ouput amplitude may be specified as upper and lower levels, which can be programmed in a ±16 V window (±8V into 50Q termination). Peak to peak amplitude, upper level value minus lower level value, is continuously variable in 10 mV steps from 150 mVp-p to 16 Vp-p (50Q). The pulse amplitude (upper, lower, or both) may be modulated (PAM) with an external signal. Control of the pulse Generator adheres to the SCPI (Standard Commands for Programmable Instruments) format Version 1.0, April 1990 (refer to the SCPI manual for further information). SCPI is an industry standard language for remote instrument programming. Using any manufacturer's VXI chassis, the Model 1391 can be controlled using the SCPI language and the appropriate controller. Multiple pulse generators may be linked and operated together inside one VXIbus chassis. Series operation is provided by full support of the VXIbus SUMBUS. A signal programmed at the output may be sent to the SUMBUS, or signal present at the SUMBUS may be summed into the model 1391 output. In parallel operation, model 1391 *s may be slaved to a master clock/trigger bus on the VXIbus backplane to create a multichannel pulse Generator. The model 1391 has extensive self-adjustment utilities built in. Calibration constants are maintained in nonvolatile memory. 1.2 Specifications 1.2.1 Functions Programmable single, double or delayed pulse and fixed («50%) duty cycle square wave. 1.2.2 Operating Modes Continuous: Pulse period generated continuously internal to the model 1391 at programmed frequency/period. Selected pulse waveform is continuously output at PULSE OUT with programmed pulse characteristics. Period timing signal appears at SYNC OUT (if enabled) and may be selected for output to the backplane. Pulse periods programmable up to 25 MHz in double pulse, 50 MHz in single or delayed pulse, and 100 MHz in square wave. Pulse Amplitude Modulation may be enabled for external signal at PAM IN. Triggered: As above for Continuous mode, except that pulse period generation is disabled. Output quiescent until triggered by an external signal at TRIG IN, a TTLTRG or ECLTRG signal, internal trigger frequency, or a VXIbus command, then generates one pulse period with the programmed pulse waveform and pulse characteristics. Triggered pulse periods operate to 25 MHz in double pulse, 50 MHz in single or delayed pulse and square wave. Gated: Similar to triggered mode except output continues for the duration of gate signal. The last pulse period started is completed. Burst: Similar to triggered mode except programmable number of pulse periods in a burst. Burst length, initiated by the trigger signal, is programmable between 2 and 1,000,000 cycles.

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Service and User Manual
Manual Type:
Service and User Manual
Pages:
88
Size:
4.55 Mbytes (4767247 Bytes)
Language:
english
Revision:
Manual-ID:
1006-00-0694
Date:
01 September 1992
Quality:
Scanned document, reading partly badly, partly not readable.
Upload date:
02 January 2017
MD5:
a7d80b964c542cc426da47ea81d88452
Downloads:
673

Information

PRELIMINARY OPERATION AND MAINTENANCE MANUAL SECTION 1 SECTION 2 SECTION 3 SPECIFICATIONS 1.1 THE MODEL 1391 ... 1.2 SPECIFICATIONS ... 1.2.1 Functions ... 1.2.2 Operating Modes ... 1.2.3 Inputs ... 1.2.4 Outputs ... 1.2.5 Pulse Characteristics ... 1.2.6 Multichannel Operation., 1.3 GENERAL ... 1.3.1 SCPI Programming ... 1.3.2 VXIbus Interface ... 1.3.3 Environmental ... 1.3.4 Size ... 1.3.5 Power ... 1.3.6 Reliability ... 1.3.7 Cooling Requirement ... 1.3.8 Safety ... 1.3.9 EMC ... „ PREPARATION 2.1 RECEIVING.INSPECTION ... 2.1.1 Unpacking instructions ... 2.1.2 Returning Equipment ... 2.2 PREPARATION FOR STORAGE OR SHIPMENT ... 2.2.1 Packaging ... 2.2.2 Storage ... 2.3 PREPARATION FOR USE ... 2.3.1 Logical Address Selection ... 2.3.2 Data Transfer Bus Arbitration, ... 2.4 INSTALLATION ... 2.5 INITIAL CHECKOUT AND OPERATION VERIFICATION OPERATION 3.1 INTRODUCTION ... : ... 3.2 CONNECTORS AND LED INDICATORS ... 3.3 MODEL 1391 PROGRAMMING ... 3.3.1 SCP! Command Table ... 3.3.1.1 Long and Short Form Keywords ... 3.3.2 Command Message Format ... 3.3:2.1 Program Message Unit ... 3.3.2.2 Program Message ... 3.3.2.3 Program Message Delimiters ... 3.3.2.4 Parameter Forms ... 3.3.2.5 Program Message Terminators ... 3.3.2.6 Queries ... 3.3.3 Model 1391 SCPI Commands ... 3.3.3.1 CALibrate Subsystem ... 3-7 3.3.3.2 INITiate Subsystem ... 3-7 3.3.3.3 OUTRut Subsystem ... 3-8 3.3.3.4 RESet Subsystem ... 3-8 3.3.3.5 SOURce Subsystem ... 3-8 3.3.3.6 SYSTem Subsystem ... 3-11 3.3.37 TRiGger Subsystem ... 3-12 3.3.3.8 DiAGnostic Subsystem ... 3-13 3.3.3.9 STATus Subsystem ... 3-13 3.3.4 IEEE 488.2 Common Commands ... 3-16 3.4 MODEL 1391 OPERATION; ... 3-16 3.4.1 Output Terminations ... 3-16 3.4.2 Input/Output Protection ... 3-17 3.4.3 Power On/Reset Defaults ... 3-17 3.4.4 Continuous Operation ... 3-17 3.4.4.1 Frequency/Period Parameters ... 3-19 3.4.4.2 Pulse Parameters ... 3-19 34,4.3 Output Levels ... 3-19 3.4.4.4 Pulse/Square Functions ... 3-20 3.4.5 Marker Operation ... 3-20 3.4.6 SUMBUS Operation ... 3-20 3.4.7 PAM Operation ... 3-21 3.4.8 Triggered Operation ... 3-22 3.4.8.1 Level and Slope Parameters ... 3-23 3.4.8.2 External Trigger Input ... 3-23 3.4.8.3 Internal Trigger ... 3-23 34.8.4 BUS Trigger Commands ... 3-23 3.4.8,5 VXI Trigger Bus Input ... 3-24 3.4.9 Gated Operation ... 3-24 3.4.9.1 Externa! Width Operation ... 3-25 3.4.10 Burst Operation ... 3-26 3.4.11 Master/Slave Operation ... 3-26 3.4.12 Status Commands ... 3-26 SECTION 4 CIRCUIT DESCRIPTION 4.1 INTRODUCTION ... 4-1 4.2 VXI Interface BOARD ... 4-2 4.2.1 VXI bus Overview ... 4-2 4.2.2 Interface Board ... 4-2 4.3 PULSE Generator BOARD - DIGITAL CIRCUITS ... 4*3 4.3.1 Interconnect and Power Distribution ... 4-5 4.3.2 Digital Interface and Data Registers ... 4-5 4.3.3 Frequency Synthesizer ... 4-7 4.3.4 TBF ... 4-8 4.4 PULSE Generator BOARD - ANALOG CIRCUITS ... 4-8 4.4.1 Main High-Speed Analog Signal Path ... 4-8 4.4.2 Level Shift ... 4-10 4.4.3 Current Switch ... 4-10 4.4.4 Timimg Capacitors ... 4-10 4.4.5 Limiter ... 4-11 4.4.6 Trapezoid Shaper ... 4-11 4.4.7 Multiplier ... 4-11 4.4.8 Output Amplifier ... 4-11 4.4.9 Sumbus Driver ... 4-13 4.4.10 Control Voltage D to A Converters ... 4-14 4.4.11 Amplitude Control/PAM Circuitry ... , ... 4-14 4.4.12 Transition Control Current Sources ... 4-14 4.4.13 Delay - Width One-Shot Control ... 4-14 4.4.14 Relay Driver ... 4-14 4.4.15 Power Oscillator ... 4-15 4.4.16 Cahrge Pump ... 4-15 4.4.17 AutoCal/Buiit-ln-Test Circuitry ... 4-15 SECTIONS CALIBRATION ■ 5.1 FACTORY REPAIR ... 5-1 5.2 REQUIRED TEST EQUIPMENT ... 5-1 5.3 PERFORMANCE VERIFICATION PROCEDURE ... 5-2 5.4 CALIBRATION ... 5-10 5.4.1 Semi-Automated Procedure ... 5-10 5.4.2 Preparation ... 5-12 5.4.3 Connector Termination ... 5-12 5.4.4 v Calibration Procedure ... 5-12 The Next sections are Missing! SECTION 6 TROUBLESHOOTING TO BE SUPPLIED AT A LATER DATE SECTION 7 PARTS AND SCHEMATICS 7.1 DRAWINGS ... 7-1 7.2 ERRATA ... 7-1 7.3 ORDERING PARTS ... 7-1

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