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Avtech AVR-D2-B, Инструкция по эксплуатации

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The figure above is taken from MIL-PRF-19500/177F, and is for testing the non-
saturated switching time of PNP transistors.

The next figure is taken from MIL-PRF-19500/255V, and is for testing the saturated 
turn-on switching time of NPN transistors:

Both of the above circuits have 50 Ohm input impedance, so no additional shunt 
resistance is required. However, MIL-PRF-19500/255V also specifies a circuit for 
testing the saturated turn-off switching time of NPN transistors:

The input impedance of this circuit is 1 kilohm, so a 50 Ohm resistance (to ground) 
should be added at the input to this circuit, to avoid transmission line reflections.

Other circuits, specified in other MIL-PRF-19500 “slash sheets” can also be driven by 
the AVR-D2-B. The above circuits are only typical examples.

Avtech can provide test jigs (designed using proper high-speed construction 
techniques) to implement your required test circuitry. Contact Avtech 
(

[email protected]

) with your test requirement!

24

Содержание AVR-D2-B

Страница 1: ...BER 13913 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 Tel 888 670 8729 USA C...

Страница 2: ...ace said defective item This warranty does not apply to units which have been dissembled modified or subjected to conditions exceeding the applicable specifications or ratings This warranty is the ext...

Страница 3: ...NSING 9 INSTALLATION 10 VISUAL CHECK 10 POWER RATINGS 10 CONNECTION TO THE POWER SUPPLY 10 PROTECTION FROM ELECTRIC SHOCK 11 ENVIRONMENTAL CONDITIONS 12 LABVIEW DRIVERS 12 FUSES 13 AC FUSE REPLACEMENT...

Страница 4: ...CLEANING 33 TRIGGER DAMAGE 33 WIRING DIAGRAMS 34 WIRING OF AC POWER 34 WIRING OF HIGH VOLTAGE DC POWER SUPPLIES 35 PCB 158R4 LOW VOLTAGE POWER SUPPLY 36 PCB 235B HIGH VOLTAGE DC POWER SUPPLY 37 PCB 15...

Страница 5: ...from the internal trigger source it can also be triggered or gated by external TTL level signals A front panel pushbutton or a computer command can also be used to trigger the instrument The AVR D2 B...

Страница 6: ...Jitter 35 ps 0 015 of sync delay Trigger modes Internal trigger external trigger TTL level pulse 50 ns 1 k input impedance front panel Single Pulse pushbutton or single pulse trigger via computer com...

Страница 7: ...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...

Страница 8: ...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...

Страница 9: ...9 have been made Requirements for WEEE compliance may include registration of products with local governments reporting of recycling activities to local governments and financing of recycling activiti...

Страница 10: ...mal single phase supply CONNECTION 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 p...

Страница 11: ...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...

Страница 12: ...C decreasing linearly to 50 relative humidity at 40 C 5 Mains supply voltage fluctuations up to 10 of the nominal voltage 6 no pollution or only dry non conductive pollution LABVIEW DRIVERS A LabVIEW...

Страница 13: ...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...

Страница 14: ...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 6A 250V Ti...

Страница 15: ...ds after which the instrument will attempt to re enable the output i e light green for about 1 second If the overload condition persists the output will be disabled again i e light yellow for another...

Страница 16: ...this increases the setting by a factor of ten 10 If one of the adjustable numeric parameters is displayed this decreases the setting by a factor of ten If one of the adjustable numeric parameters is...

Страница 17: ...of the instrument This input can be either active high or active low depending on the front panel settings or programming commands The instrument triggers normally when this input is unconnected When...

Страница 18: ...sense the parity setting It may be necessary to send a few return characters before attempting a login in order to provide enough data to allow this auto sensing to work A standard Linux agetty proces...

Страница 19: ...en Channel 2 is active the main menu on the LCD will display Route 2 A DC offset of 15V to 15V may be added to the output in either mode Regardless of the channel used this instrument can be triggered...

Страница 20: ...tween the signal when an external TTL level trigger is used 20 SYNC OUT generated by the internal oscillator 100 ns FIXED MAIN OUTPUT PULSE WIDTH DELAY 0 AMPLITUDE VARIABLE 3V FIXED OFFSET VARIABLE 0V...

Страница 21: ...ly External Trigger the instrument is triggered by an external TTL level clock on the back panel TRIG connector Manual Trigger the instrument is triggered by the front panel SINGLE PULSE pushbutton Ho...

Страница 22: ...connector The instrument can be set to stop triggering when this input high or low using the front panel gate menu or the appropriate programming commands When gated the output will complete the full...

Страница 23: ...serve the high speed waveform A typical test arrangement is shown below The attenuator is required to prevent damage to the sampling oscilloscope TYPICAL TEST SETUPS 23 AVTECH PULSER MAIN OUTPUT CONNE...

Страница 24: ...fies a circuit for testing the saturated turn off switching time of NPN transistors The input impedance of this circuit is 1 kilohm so a 50 Ohm resistance to ground should be added at the input to thi...

Страница 25: ...d to properly terminate the transmission line USE LOW INDUCTANCE LOADS Lenz s Law predicts that for an inductive voltage spike will be generated when the current through an inductance changes Specific...

Страница 26: ...controls 1 Connect the pulse generator to a sampling oscilloscope as shown above 2 Turn on the AVR D2 B The main menu will appear on the LCD 3 To set the AVR D2 B to generate the Channel 1 waveform o...

Страница 27: ...pointer should be pointing at the Normal choice If it is not press MOVE until it is d Press CHANGE to return to the main menu 6 To set the Channel 1 pulse width to 500 ns a Press the MOVE button until...

Страница 28: ...tep 6 As you rotate the ADJUST knob the pulse width on the oscilloscope will change It should agree with the displayed value 10 To set the AVR D2 B to generate the Channel 2 waveform on the output con...

Страница 29: ...idth to 500 ns pulse delay 20 ns sets the delay to 20 ns volt ampl 20 sets the channel 1 amplitude to 20 V volt low 2V sets the channel 1 offset to 2 V volt ampl2 2V sets the channel 2 amplitude to 2...

Страница 30: ...nable EVENt query only always returns 0 CONDition query only always returns 0 ENABle numeric value implemented but not useful SYSTem COMMunicate GPIB ADDRess numeric value SERial CONTrol RTS ON IBFull...

Страница 31: ...NOTES Application notes are available on the Avtech web site at http www avtechpulse com appnote MANUAL FEEDBACK Please report any errors or omissions in this manual or suggestions for improvement to...

Страница 32: ...factory for repair Service is to be performed solely by qualified service personnel Caution High voltages are present inside the instrument during normal operation Do not operate the instrument with t...

Страница 33: ...s recommended TRIGGER DAMAGE The rear panel TRIG input used in the external trigger mode is protected by a diode clamping circuit However the protection circuit is not foolproof and it is possible for...

Страница 34: ...8 T OENCO DER T OLCD 104D BD2 PCB104DKEYPADBO ARD BUNITSONLY Ch a ssisg ro u ndpo st G 1 G 2 B1 RED G 4 G 3 L N G X2 CORCO M6EGG 1 2POWERENTRY M O DULE 1 1b 1a 2 2b 2a X1 POWERSWITCHSW325 ND CWINDUSTR...

Страница 35: ...10KOY NOT USED 4 7K 5K 3266W NOT USED 1 2 3 Q1 IRF610 O N WALL ISO LAT E BET WEEN R10AND R11 CHA NGES ON PCB 158R4 1 INSTA LL U10 PY B15 Q24 S24 2 INSTA LL C29 C30 47uF 35V 3 INSTA LL C31 2 2uF 4 INST...

Страница 36: ...PCB 158R4 LOW VOLTAGE POWER SUPPLY...

Страница 37: ...PCB 235B HIGH VOLTAGE DC POWER SUPPLY...

Страница 38: ...PCB 151D RANGE CONTROL...

Страница 39: ...p c b 2 1 7 d d b D o c u m e n ts p c b 2 1 7 a s c h S S R R E L A Y D R IV E R 1 A 1 2 3 4 5 6 K 1 P S 7 1 0 A 1 A 1 2 3 4 5 6 K 2 P S 7 1 0 A 1 A R 2 1 5 K R 1 1 5 K 1 5 V I N 1 2 4 V O U T 2 1 5...

Страница 40: ...2015 ddb Documents Panelbrd prj PANELTOP LEVELSCHEMATIC 1 2 3 4 5 6 7 8 9 10 J5 Amp 54999 10 1 10 pin straight head er I2C_INT SC L SDA GND VC C SINGLE PULSE BACKLIGHT ENCODER ENCODER S CH I2C_INT SC...

Страница 41: ...UST HAVE A IN P N VC C 1A 1B X2 82 101 71 1 b utton keypad 1 2 U4 A MM74HC 14N 11 10 U1 E MM74HC 14N SINGLE PULSE VC C VC C C1 0 2 2uF C1 1 2 2uF C1 2 2 2uF C9 2 2uF C7 2 2uF C6 2 2uF C1 2 2uF 3 4 U4...

Страница 42: ...DA SC L VC C VC C GND VC C VC C C5 0 1uF 1 2 U1 A MM74HC 14N 13 12 U1 F MM74HC 14N 5 6 U1 C MM74HC 14N PAD3 LED PAD4 LED X3 4 40 MOUNT X1 4 40 MOUNT X9 4 40 MOUNT X8 4 40 MOUNT 3 4 U1 B MM74HC 14N LC...

Страница 43: ...1 16 AMPLRN G 0 17 XRLY 5 18 XRLY 4 EO 19 XRLY 3 V I 20 XRLY 2 DUALPW 21 XRLY 1 22 GATE 23 EXTTRIG 24 SYNC OUT 25 M AINOU T 26 5VON OFF 27 15V ON OFF 28 OUT SYNC V SPARE V PRF GATE 24 V GND TR IG AUX...

Страница 44: ...PERFORMANCE CHECK SHEET 44...

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