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GENERAL INFORMATION

 

 

BASIC TEST ARRANGEMENT

 

 

The AVP-AV-1S-C should be tested with a sampling oscilloscope with a bandwidth of at
least 15 GHz to properly observe the high-speed waveform. (The cables and 
attenuators must also have a bandwidth of at least 15 GHz.) A typical test arrangement 
is shown below:

The attenuators are required to prevent damage to the sampling oscilloscope. A 40 dB 
attenuator with sufficient voltage rating should be used on the main output. Factory 
tests are conducted using Mini-Circuits model BW-S20W2+ attenuators.

BASIC PULSE CONTROL

 

 

This instrument can be triggered by its own internal clock or by an external TTL trigger 
signal. When triggered internally, two mainframe output channels respond to the 
trigger: OUT and SYNC. 

OUT. This is the main output. The maximum output voltage is 5V.

TRIG. The TRIG pulse is a fixed-width TTL-level reference pulse used to trigger 
oscilloscopes or other measurement systems. 

The TRIG output precedes the main output. These pulses are illustrated below:

19

AVTECH
PULSER

MAIN OUTPUT

CONNECTOR

TRIG

CONNECTOR

AC

POWER

ALL CABLES: 50 OHM COAXIAL

SAMPLING

OSCILLOSCOPE

BW > 15 GHz

50 OHM INPUT

TRIG

CONNECTOR

40 dB

ATTENUATOR

Summary of Contents for AVP-AV-1S-C

Page 1: ...FALL TIME SERIAL NUMBER 14173 A V T E C H E L E C T R O S Y S T E M S L T D N A N O S E C O N D W A V E F O R M E L E C T R O N I C S S I N C E 1 9 7 5 info avtechpulse com http www avtechpulse com T...

Page 2: ...all at its option repair or replace said defective item This warranty does not apply to units which have been dissembled modified or subjected to conditions exceeding the applicable specifications or...

Page 3: ...RATINGS 11 CONNECTION TO THE POWER SUPPLY 11 PROTECTION FROM ELECTRIC SHOCK 12 ENVIRONMENTAL CONDITIONS 13 FUSES 14 AC FUSE REPLACEMENT 14 DC FUSE REPLACEMENT 15 FUSE RATINGS 15 FRONT PANEL CONTROLS...

Page 4: ...B 158R5 LOW VOLTAGE POWER SUPPLY 25 PCB 235C HIGH VOLTAGE DC POWER SUPPLY 26 PCB 126D OSCILLATOR AND TRIGGER CIRCUIT 27 PCB 231A INTERNAL OFFSET GENERATOR 28 MAIN WIRING 29 PERFORMANCE CHECK SHEET 30...

Page 5: ...lse width is variable from 0 2 to 4 ns Instruments with the P model suffix can generate up to 5V whereas instruments with the N model suffix can generate up to 5V Instruments with the PN suffix have a...

Page 6: ...lable with several options M Option a monitor output is provided OS Option an externally generated DC offset can be added to the output OT Option an internally generated DC offset controlled by a fron...

Page 7: ...through terminators one SMA one BNC for use on external trigger inputs Optional accessory kit coaxial cables and adapters Add the suffix AK8 to the model number to include the recommended accessory k...

Page 8: ...g Also check that your load is adequately shielded It may be necessary to enclose the load in a metal enclosure If any of the connectors on the instrument are unused they should be covered with shield...

Page 9: ...tion of conformity is issued under the sole responsibility of Avtech Electrosystems Ltd Specifically products manufactured do not contain the substances listed in the table below in concentrations gre...

Page 10: ...he representative to determine who has responsibility for WEEE compliance Normally such responsibilities with lie with the representative unless other arrangements under Article 9 have been made Requi...

Page 11: ...NNECTION TO THE POWER SUPPLY An IEC 320 three pronged recessed male socket is provided on the back panel for AC power connection to the instrument One end of the detachable power cord that is supplied...

Page 12: ...erators are prevented access and or are insulated from every connection point In some cases connections must be exposed to potential human contact Operators must be trained to protect themselves from...

Page 13: ...ndoor use 2 altitude up to 2 000 m 3 temperature 5 C to 40 C 4 maximum relative humidity 80 for temperatures up to 31 C decreasing linearly to 50 relative humidity at 40 C 5 Mains supply voltage fluct...

Page 14: ...the fuses on the rear panel are shown in the figure below AC FUSE REPLACEMENT To physically access the AC fuses the power cord must be detached from the rear panel of the instrument The fuse drawer ma...

Page 15: ...Nominal Mains Voltage Rating Case Size Recommended Replacement Part Littelfuse Part Number Digi Key Stock Number 1 2 AC 100 240V 0 5A 250V Time Delay 5 20 mm 0218 500HXP F2416 ND 3 DC N A 1 0A 250V Ti...

Page 16: ...will be disabled again i e light yellow for another 5 seconds If the overload condition has been removed the instrument will resume normal operation This overload indicator may flash yellow briefly a...

Page 17: ...al controls the pulse width 7 Amplitude Control This dial controls the amplitude in conjunction with the LOW HIGH range switch 8 LOW HIGH Range Switch In the HIGH range the full maximum amplitude appr...

Page 18: ...minal The DC offset will appear on the output When this feature is not used the OS input should be connected to ground using the adjacent GND connector This is especially important when driving loads...

Page 19: ...ted using Mini Circuits model BW S20W2 attenuators BASIC PULSE CONTROL This instrument can be triggered by its own internal clock or by an external TTL trigger signal When triggered internally two mai...

Page 20: ...aveforms when operated near maximum amplitude If amplitudes less than 20 of the full scale value are desired better results will be obtained if the pulse generator is operated at a higher amplitude an...

Page 21: ...ere L is the inductance ILOAD is the load current change and t is time For this reason it is important to keep any parasitic in the load low This means keeping wiring short and using low inductance co...

Page 22: ...act Avtech info avtechpulse com to arrange for the instrument to be returned to the factory for repair Service is to be performed solely by qualified service personnel Caution High voltages are presen...

Page 23: ...es may require replacement All fuses can be accessed from the rear panel See the FUSES section for details CLEANING If desired the interior of the instrument may be cleaned using compressed air to dis...

Page 24: ...WIRING DIAGRAMS WIRING OF AC POWER...

Page 25: ...PCB 158R5 LOW VOLTAGE POWER SUPPLY...

Page 26: ...PCB 235C HIGH VOLTAGE DC POWER SUPPLY...

Page 27: ...PCB 126D OSCILLATOR AND TRIGGER CIRCUIT...

Page 28: ...PCB 231A INTERNAL OFFSET GENERATOR...

Page 29: ...MAIN WIRING...

Page 30: ...PERFORMANCE CHECK SHEET 30...

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