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26

Specification Guide

SR620 Universal Time Interval Counter

Graphs 3 and 4 show the effects of trigger timing jitter and trigger timing level error on resolution and error.
These graphs are applicable to all measurements, not just time intervals.

MEASUREMENT ACCURACY

The following equations allow one to calculate the SR620's resolution and error in the various measurement
modes. The SR620's typical specification are used in the following equations. For worst case bounds simply
replace the typical with the worst case numbers.

NOTE

: The quantities added to calculate the SR620's resolution are independent rms quantities and must be

added in quadrature:

total

=

x

1

2

+

x

2

2

+ …

NOTE

: "timebase error" refers to the sum of aging and temperature effects.

TIME INTERVAL, WIDTH, RISE/FALL TIME MODES:

In the time measurement modes the measurement resolution and error are given by:

N

= number of samples averaged

Resolution

=

±

(

25

ps

)

2

+

(

time

interval

×

short term stability )

2

+

(start

trigger jitter

)

2

+

(

stop

trigger

jitter

)

2

N

Error

=

±

resolution

±

(

timebase

error

×

time interval )

±

start

trigger level error

±

stop

trigger

level

error

±

0.5 ns

Graph 3: Effect of input noise on measurement
resolution. Averaging reduces the effects of
noise.

Graph 4: Effect of input slew rate on
measurement error.

«
...
40
41
42
43
44
...
»

Содержание SR620

Страница 1: ...sal Time Interval Counter 1290 D Reamwood Avenue Sunnyvale California 94089 Phone 408 744 9040 Fax 408 744 9049 email info thinkSRS com www thinkSRS com Copyright 1989 by SRS Inc All Rights Reserved R...

Страница 2: ...SR620 Universal Time Interval Counter...

Страница 3: ...10 Timebase Input and Output 10 DVM Inputs 10 Sample Arming 11 TIME Mode 11 Time Interval Arming 11 TIME 11 TIME EXT 12 TIME EXT with HOLDOFF 12 TIME 12 TIME EXT 12 Width Arming 13 WIDTH TIME 13 WIDT...

Страница 4: ...s 57 CAL Error Messages 57 Common Operational Problems 57 Error Messages 57 Error Indicators 58 Wrong Value 58 Excessive Jitter 58 Scope Display Problems 58 Printer and Plotter Problems 58 GPIB Interf...

Страница 5: ...PCB 85 Component Parts List 87 Schematic Circuit Diagrams Sheet No Front Rear Panel Summary Counter Visual Index Microprocessor System 1 16 GPIB RS232 Printer Interfaces 2 16 Scope Graphics Controlle...

Страница 6: ...iv Table of Contents SR620 Universal Time Interval Counter...

Страница 7: ...t board to position the desired voltage to be visible when pushed firmly into its slot Rotate the fuse pull lever back into its normal position and insert the correct fuse into the fuse holder LINE FU...

Страница 8: ...vi Safety and Preparation for Use SR620 Universal Time Interval Counter...

Страница 9: ...a 1 2 5 sequence from 1 s to 10 ms The maximum delay is 50 000 steps Display 16 digit fixed point with 1 ps LSD Sample Rate For a sample size of N the total sample time is N x 800 s measured time int...

Страница 10: ...tting Sensitivity see graph next page Autolevel A B Threshold set between peak input excursions f 10 Hz duty cycle 10 6 Slope Rising or falling edge Impedance 1 M Ohm 30 pf or 50 Ohms 50 Ohm terminati...

Страница 11: ...x 200 V pixels Hardcopy Via Centronics port to Epson graphics compatible dot matrix printers RS 232 IEEE 488 to HP GL compatible Digital Plotters Interfaces RS 232C 300 to 19 2 KBaud All instrument f...

Страница 12: ...x Specifications SR620 Universal Time Interval Counter...

Страница 13: ...PL i j Sets the input ac dc coupling of chans A and B to 0 dc or 1 ac TERM i j Sets the 50 ohm terminator of input also prescaler n 0 50 ohm n 1 1 meg n 2 prescale Prescalers can only be used in freq...

Страница 14: ...f the stripchart is blank or the scan has not reached point j BDMP j Binary dumps j points Sample size 1 Scan Commands ANMD j Sets the DAC output mode of the mean and jitter DAC s to 0 chart chart 1 D...

Страница 15: ...on OPC Operation complete common synchronization command Either sets a status bit or returns a value when all operations scans prints measurements are complete WAI Wait synchronization command Holds o...

Страница 16: ...sal Time Interval Counter POT j Reads the value of trigger pot j CAL Starts autocal and returns status when done TST Starts self test and returns status when done BYTE j k Reads sets linearization byt...

Страница 17: ...z and provide a more consistent MEAN value 5 Press the SET key in the DISPLAY section to set the REL offset to the current value of the MEAN The REL LED will turn on and the display will show a mean v...

Страница 18: ...odes include Time Time External Time External with Stop Holdoff Time and Time External Frequency gating modes include fixed gates of one period 0 01 s 0 1 s 1 s Externally triggered fixed gates Extern...

Страница 19: ...EF output may also be selected The other input then stops the time interval In pulse width frequency period and counts the source may be A B or the 1kHz REF Additionally in frequency period and count...

Страница 20: ...gate 0 1s LED on 1 0s gate 1 0s LED on ext gate EXT LED on ext 1 PERIOD EXT and 1 PERIOD LEDs on ext 0 01s gate EXT and 0 01s LEDs on ext 0 1s gate EXT and 0 1s LEDs on ext 1 0s gate EXT and 1 0s LEDs...

Страница 21: ...eature described in the GRAPHICS ZOOM section below Pressing the CLR button with the REL off clears the display JITTER displays either the standard deviation display prefaced by d or Allan variance di...

Страница 22: ...graph Autoscale will automatically adjust the scales so that the data fits on the screen In histogram mode the actual scaling of the graph does not occur until the next measurement is complete The sc...

Страница 23: ...w graphs are generated faster than the printer can print them A print or plot may be aborted by pressing the CLR button under the PRINT button Pressing and holding the CLR button will turn off autopri...

Страница 24: ...The measurements are relative to a REL of 10 022176 kHz The REL is at the center of the graph The cursor dotted line shows that measurement number 67 was 1 635 kHz below the REL Sample jitter stripcha...

Страница 25: ...he autolevel circuit tries to adjust the trigger threshold NOTE in width and rise fall time modes which use only one input the A trigger knob sets the start trigger voltage and the B trigger knob sets...

Страница 26: ...pedance or 2V into 50 Ohms or ECL levels into 50 Ohms An example of the use of this output is to set the mode to measure the time from REF to B If a cable is then connected from the REF output to B th...

Страница 27: ...and the B input When REF is used as the Start source the rising edge of REF is used when a positive slope is selected for the A input and the falling edge is used when a negative slope is set In this...

Страница 28: ...Stop or to the next Stop For example if the Start and Stop are both 1 KHz square waves with the Stop edge following the Start edge by 1 uS then the unit will report a Time interval of either 1 us or 9...

Страница 29: ...d as the source to be measured The selected source is used as the input to both comparators The threshold knob above the A input is used to specify the Start voltage threshold and the knob above the B...

Страница 30: ...interval measurements For very short gates the accuracy is determined by the 200ps time interval accuracy while for long gates the accuracy is limited by the accuracy of the timebase EXTERNAL gates m...

Страница 31: ...n this mode the unit will display the number of events at the A or B inputs which occurred during the gate The gate choices are the same as for frequency and period modes As in the frequency mode of o...

Страница 32: ...TERNAL STOP HOLDOFF that require an external input of some width the delay will be followed by a gate one step size wide not the width of the external trigger pulse The SR620 has the ability to automa...

Страница 33: ...controller in ASCII Hex The up down keys in the SCOPE AND CHART section may be used to scroll through the last 256 characters received A period after the right most digit indicates the last character...

Страница 34: ...r The meaning of these calibration bytes is described in the CALIBRATION section of this manual OUTPUT MENU out The output menu enables scope displays selects the hardcopy device sets the DVM scales c...

Страница 35: ...the trigger level range over the communications interfaces SCAN MENU Scn The SR620 has a scanning capability that allows automatic measurement of VCO tuning curves oscillator step response etc The SR...

Страница 36: ...If the step size is set for 0 0V the D A outputs will always be set to the programmed voltage However if the step size is not zero the D A voltages will only be reset when the scan is reset and the a...

Страница 37: ...sured frequency on the y axis Of course hardcopy of the scope display which shows the linearity curve may be printed or plotted EXAMPLE OF A TIME SCAN In this example the frequency of a VCO is measure...

Страница 38: ...e width step 9 StArt 0 000001 Start scan delay at 1 us Then press the RESET key in the SAMPLE SIZE section to exit from the CONFIG menus The SR620 will compose a scope display showing the frequency of...

Страница 39: ...ue and actual value of the signal being measured The error in a measurement is of primary concern when the absolute value of the parameter being measured is important Error consists of the random fact...

Страница 40: ...ise The SR620 s timebase short term stability is specified by its Allan variance Typical values for several gate times are standard oscillator oven oscillator 1 0s gate 1 2x10 10 2 3x10 11 10s gate 2...

Страница 41: ...clock for measurement times longer than 50ms become that of the external source For shorter measurement times the clock characteristics are unimportant compared to the internal jitter 25ps rms of the...

Страница 42: ...ers NOTE The quantities added to calculate the SR620 s resolution are independent rms quantities and must be added in quadrature total x1 2 x2 2 NOTE timebase error refers to the sum of aging and temp...

Страница 43: ...cy resolution as a function of gate time is shown in Graph 5 The curves are for the standard oscillator the optional oven oscillator and an external high stability reference The input signal noise is...

Страница 44: ...2 2 trigger jitter 2 period 2 N 1 phase period 360 gate time 2 Error resolution timebaseerror timeinterval start trigger level error stoptrigger level error 0 5ns timebase error period 1 10 8 period 3...

Страница 45: ...ts and to indicate that a command was either processed correctly or contained errors The RS232 echo mode is good way to become familiar with the commands that the SR620 expects and the values that it...

Страница 46: ...rement no parameters MODE 1 MODE lf Sets mode to width 1 then queries the mode Detailed Command List The four letter mnemonic in each command sequence specifies the command The rest of the sequence co...

Страница 47: ...l knob is rotated TSLP i j The TSLP command selects the trigger slopes of the EXT A and B inputs The parameter j 0 selects positive slope while j 1 selects negative slope Measurement Control Commands...

Страница 48: ...ency 4 period 5 phase 6 count Note after setting the SR620 s mode the other measurement parameters should be set to their desired values because changing modes may cause them to change SIZE x The SIZE...

Страница 49: ...8 bit data word must be chosen to correctly transmit this data The data returned is binned into 250 bins not the number set by the front panel This command allows one to rapidly read the entire conte...

Страница 50: ...both outputs are programmable sources DBEG j The DBEG command sets the start position of the internal delay scan The parameter j is the desired delay in units of number of gate widths The allowable ra...

Страница 51: ...tep size The parameter j refers to the channel desired 0 or 1 and x is a voltage in the range 10 00 to 10 00 volts If the selected channel is not enabled to be a general purpose output this command ha...

Страница 52: ...pt the current address of the SR620 may be used PLPT j The PLPT command sets the plotter output port to either RS232 or GPIB The parameter j 0 set the port to RS232 while j 1 sets the port to GPIB PLO...

Страница 53: ...the input voltage range of DVM input j j 0 1 If k 0 the selected channel is set to autorange if k 1 the selected channel is set to 20V full scale and if k 2 the selected channel is set to 2V full sca...

Страница 54: ...measure mode and automeasure bit setup byte 1 bit 0 is 1 if automeasure is on position meaning parameter format 1 instrument mode same as MODE command 2 source same as SRCE command 3 arming mode same...

Страница 55: ...clear bit If j 1 the power on status clear bit is set and all status registers and enable registers are cleared on power up If j 0 the bit is cleared and the status enable registers maintain their val...

Страница 56: ...TE j k The BYTE command set the value of linearization byte j to k Parameter j may have a value from 0 to 129 and k may range from 0 to 255 NOTE this command will alter the calibration of the SR620 Ho...

Страница 57: ...eport errors in commands received over the communications interfaces The bits in this register stay set once set and are cleared by reading them or by the CLS command TIC Status Byte bit name usage 0...

Страница 58: ...42 Programming Commands SR620 Universal Time Interval Counter...

Страница 59: ...required at the end of each group of measurements This calculation time is zero no graphic displays binary responses or 5 ms no graphic displays ASCII responses or 8 ms active chart outputs or scope d...

Страница 60: ...ce card and interface drivers must all be configured properly To configure the SR620 you must set the GPIB address in line 2 of the Control CONFIG menu The default GPIB address is 16 use this address...

Страница 61: ...ational C card the National device driver must be installed and the IBCONF program C must be run to tell the driver where everything is The program is compiled C with the command FL AL FPa example2 fo...

Страница 62: ...3812934D 14 1 05963812934D 14 1 05963812934D 14 100 DATA 1 24900090270331D 9 1 05963812934D 14 8 3819032D 8 0 00390625D0 110 FOR I 1 TO 7 120 READ FACTORS I 130 NEXT I 140 DEF SEG HD000 base address o...

Страница 63: ...660 NEXT J 670 if answer 0 change sign and get magnitude 680 IF DAT 4 I 1 4 0 GOTO 740 690 SIGN 1 700 FOR J 1 TO 4 710 TEMP J 65535 TEMP J 720 NEXT J 730 convert to floating point 740 FOR J 1 TO 4 750...

Страница 64: ...program is written in Microsoft Fortran version 4 0 C To compile this program use the command FL AL FPi Gt40000 c bindump for C the Gt option is needed to force the data array into the default data C...

Страница 65: ...ata 4 i fdata i 20 continue 102 format 1X 4Z4 converted D22 15 goto 10 11 continue end C C converts the binary data to real numbers subroutine Convert tmode texpd samples data fdata integer 2 tmode te...

Страница 66: ...the CEC GPIB card as a controller Subroutine InitGpib integer 2 status data str IFC UNT UNL DCL REN call INITIALIZE 21 0 call TRANSMIT IFC UNT UNL DCL REN status return end C C makes device at addres...

Страница 67: ...integer 2 address status length character 40 rstring character 40 cmd write cmd 100 address 100 format UNT UNL MLA TALK I2 call TRANSMIT cmd status call StatCheck address status rstring 1 40 call REC...

Страница 68: ...ogram is written in Microsoft C version 5 1 The header file for the GPIB interface is ms c488 h and is supplied by CEC To compile this program use the command CL AL FPi c bindump c The resulting objec...

Страница 69: ...d tmode texpd skip semicolon separator convert data and print both binary and converted form Convert tmode texpd samples printf n data n for i 0 i samples i printf 2x 2x 2x 2x converted 16 15lE s n d...

Страница 70: ...eg 0x4000 seg 0xF000 seg 0x400 if peek seg 50 C peek seg 51 E peek seg 52 C break if pc488_seg seg printf no gpib card installed n exit 0 my_address 21 system_controller 0 initialize system_controller...

Страница 71: ...s char r_string 40 temp 80 sprintf r_string UNT UNL MLA TALK d address transmit status r_string StatCheck address strcpy temp receive status length temp StatCheck address strcpy recv temp void StatChe...

Страница 72: ...56 Programming Examples SR620 Universal Time Interval Counter...

Страница 73: ...ir Test error 3 is usually self healing The instrument settings will be returned to their default values and factory calibration data will be recalled from ROM Test Error 3 will recur if the Lithium b...

Страница 74: ...set up of the X Y scope Make certain that the scope is in the XY mode with 1V div terminated into 1M Ohm The XY mode is sometimes difficult to setup some scopes have multiple controls which must be i...

Страница 75: ...evious program and no longer matches the baud rate set for the SR620 Good programming practice requires that you set the computer s baud rate at the start of each application program 3 The initial com...

Страница 76: ...60 Troubleshooting Tips SR620 Universal Time Interval Counter...

Страница 77: ...up arrow key to light each segment 7 of them and the decimal point of the leftmost two digits Only a single segment should be on at a time The MODE down arrow key will step backward through the patter...

Страница 78: ...rs between about 0 and 2V 4 Set the REF output to ECL and verify that triggering occurs between about 1 8 and 0 8V 5 Set the B input to AC and verify that triggering occurs between about 0 5 to 0 5 V...

Страница 79: ...s Terminate the A and B inputs in 50 ohms and set the trigger levels to 0 00V Set both A and B slopes to 4 Display the mean and verify that the reading is less than 1ns Record the reading 5 Display th...

Страница 80: ...age should be 0 00V 15mV 4 Set the A trigger level to 4V Slowly increase the D A 0 voltage from 0 V until the A TRIG LED flashes Record this voltage The voltage should be 4 0V 30mV 5 Set the A trigger...

Страница 81: ...Interval Counter 5 Set D A output 0 to 10 00 V Compare the SR620 reading to that of the voltmeter The difference should be 60mV Record the difference 6 Repeat steps 1 5 for DVM input 1 Record the resu...

Страница 82: ...66 Performance Test SR620 Universal Time Interval Counter...

Страница 83: ...ests Timebase Frequency _________ Accuracy 9999999 9965 Hz _________ 10000000 0035 Hz Time Interval Accuracy 1 ns _________ 1 ns Jitter 0 _________ 50 ps Trigger Inputs A Comparators 0 1Hz 99 980 mHz...

Страница 84: ...__ 300 00003 MHz 1 3 GHz 1 29999987 GHz _________ 1 30000013 GHz Trigger Accuracy A 0V 0 015 V _________ 0 015 V A 4V 3 965 V _________ 4 035V B 0V 0 015 V _________ 0 015 V B 4V 3 965 V _________ 4 0...

Страница 85: ...be viewed and adjusted by putting the cal enable jumper inside the SR620 at the front center of the circuit board into the enable position and then looking at the Caldat line in the Cal submenu The f...

Страница 86: ...n be read off of the histogram while the calbyte is viewed and adjusted on the front panel Complete Calibration Procedure Note All or any part of this procedure may be done Necessary Equipment 1 100MH...

Страница 87: ...ll other numbers are set modulo 4096 If the frequency of the oven oscillator cannot be set with a calbyte in this range set the calbyte to midrange 2048 and adjust the coarse adjustment screw on the o...

Страница 88: ...erator to B 6 Set the slopes to and measure the rise time Adjust calbyte 48 until the answer reads 0 7 Set the slopes to and measure the fall time Adjust calbyte 49 until the answer reads 0 Width Mode...

Страница 89: ...DVM Input Calibration 1 Attach a stable dc source to DVM input 0 and to the voltmeter 2 Set the DVM 0 input range to 20V 3 Set the dc source to 0 4 Adjust calbyte 20 until the DVM 0 reading and the v...

Страница 90: ...74 Calibration Procedure SR620 Universal Time Interval Counter...

Страница 91: ...errupt controller Hardware interrupts are assigned as follows Port Name Function P2_0 A D_Int A D conversion complete P2_2 Stop_Int Stop received P2_3 Gpib_Int IEEE 488 interface P2_4 RTC 1 kHz real t...

Страница 92: ...ronizing the refresh to the line frequency The quad op amp U121 provides 10 24 and 5 0 Vdc references to the two DAC s and converts their current outputs to voltages Whenever the Z80 is halted or has...

Страница 93: ...or B for Comp1 6 CMP2_B A Selects B or A for Comp2 7 CMP3_E C Selects Ext or Int_Cal for Comp3 ADC DAC and MISC CONTROL BITS Sheet 5 of 16 U235 controls the analog to digital converter ADC multiplexer...

Страница 94: ...to high impedance loads 2V to 50 Ohm loads and ECL levels 0 8 to 1 8V to 50 Ohm loads to ground The rise and fall times for this output are about 2 ns An internal calibration signal Int_Cal is also dr...

Страница 95: ...r load of Q309 L306 and C326 provides the input to the four pole crystal filter The crystal filter provides about 80 dB of selectivity for the 90 MHz signal which is discriminated by U305 a fast ECL c...

Страница 96: ...mitt trigger configuration with about 20 mV of hysteresis Since the input signal has been attenuated by 2x this represents 40 mV of hysteresis at the input The comparator threshold is set by the outpu...

Страница 97: ...nd edge will set U509B the Stop This mode is not used EVENT GATING Sheet 9 of 16 There are three modes of generating a gate for event counting fixed gates from 1 us to 1 s delayed scanning gates from...

Страница 98: ...to a counter to measure the number of 90 MHz clock ticks in the time interval The flip flop U311B saves the state of the synchronized stop bit prior to the last rising edge of the 90 MHz clock This w...

Страница 99: ...s sampled and held by the analog switch U705A on the polypropylene capacitor C706 The analog switch is turned on for about 7 us by the one shot U704A Another analog switch U705D is released just befor...

Страница 100: ...e rectifier losses The comparator U901B provides a squarewave to synchronize the scope display refresh to the line frequency POWER SUPPLY REGULATORS Sheet 14 of 16 The voltage regulators provide outpu...

Страница 101: ...ven segment displays U1 16 75 LED lamps and 32 conductive rubber keys All of the driver circuits are located on the main PCB sheet 4 of 16 The PCB is a double sided gold plated glass epoxy board The g...

Страница 102: ...86 Circuit Description SR620 Universal Time Interval Counter...

Страница 103: ...012 306 GREEN LED Rectangular D 20 3 00004 301 1N4148 Diode D 21 3 00012 306 GREEN LED Rectangular D 22 3 00012 306 GREEN LED Rectangular D 23 3 00012 306 GREEN LED Rectangular D 24 3 00012 306 GREEN...

Страница 104: ...306 GREEN LED Rectangular D 74 3 00012 306 GREEN LED Rectangular D 75 3 00012 306 GREEN LED Rectangular D 76 3 00012 306 GREEN LED Rectangular D 77 3 00012 306 GREEN LED Rectangular D 78 3 00012 306...

Страница 105: ...ips Z 0 0 00237 016 F1404 Power Button Z 0 0 00267 052 6 1 2 22 RED Wire 22 UL1007 Z 0 0 00268 052 6 1 2 22 BL Wire 22 UL1007 Z 0 0 00269 052 7 75 WHITE Wire 22 UL1007 Z 0 0 00270 052 7 3 4 22 BLUE Wi...

Страница 106: ...20 Z5U C 301 5 00127 524 2 2U Capacitor Tantalum 50V 20 Rad C 302 5 00127 524 2 2U Capacitor Tantalum 50V 20 Rad C 303 5 00023 529 1U Cap Monolythic Ceramic 50V 20 Z5U C 304 5 00023 529 1U Cap Monoly...

Страница 107: ...0 Z5U C 434 5 00009 501 24P Capacitor Ceramic Disc 50V 10 SL C 435 5 00009 501 24P Capacitor Ceramic Disc 50V 10 SL C 436 5 00023 529 1U Cap Monolythic Ceramic 50V 20 Z5U C 442 5 00104 530 3 5 20P Cap...

Страница 108: ...821 5 00127 524 2 2U Capacitor Tantalum 50V 20 Rad C 822 5 00023 529 1U Cap Monolythic Ceramic 50V 20 Z5U C 823 5 00023 529 1U Cap Monolythic Ceramic 50V 20 Z5U C 824 5 00127 524 2 2U Capacitor Tanta...

Страница 109: ...67 5 00023 529 1U Cap Monolythic Ceramic 50V 20 Z5U C 968 5 00023 529 1U Cap Monolythic Ceramic 50V 20 Z5U C 969 5 00023 529 1U Cap Monolythic Ceramic 50V 20 Z5U C 970 5 00023 529 1U Cap Monolythic Ce...

Страница 110: ...5 00023 529 1U Cap Monolythic Ceramic 50V 20 Z5U C 1019 5 00023 529 1U Cap Monolythic Ceramic 50V 20 Z5U C 1020 5 00023 529 1U Cap Monolythic Ceramic 50V 20 Z5U C 1021 5 00023 529 1U Cap Monolythic C...

Страница 111: ...r D Sub Right Angle PC Female J 123 1 00016 160 RS232 25 PIN D Connector D Sub Right Angle PC Female J 201 1 00038 130 40 PIN DIL Connector Male J 301 1 00003 120 BNC Connector BNC J 303 1 00003 120 B...

Страница 112: ...mon N 502 4 00262 425 100X7 Resistor Network SIP 1 4W 2 Common N 503 4 00262 425 100X7 Resistor Network SIP 1 4W 2 Common N 504 4 00262 425 100X7 Resistor Network SIP 1 4W 2 Common N 505 4 00247 425 1...

Страница 113: ...ackage Q 404 3 00018 324 MRF904 Transistor TO 72 Package Q 405 3 00022 325 2N3906 Transistor TO 92 Package Q 406 3 00021 325 2N3904 Transistor TO 92 Package Q 411 3 00030 325 J310 Transistor TO 92 Pac...

Страница 114: ...on Film 1 4W 5 R 201 4 00471 401 82 Resistor Carbon Film 1 4W 5 R 202 4 00314 401 12 Resistor Carbon Film 1 4W 5 R 203 4 00081 401 470 Resistor Carbon Film 1 4W 5 R 204 4 00081 401 470 Resistor Carbon...

Страница 115: ...1 4W 5 R 362 4 00027 401 1 5K Resistor Carbon Film 1 4W 5 R 363 4 00027 401 1 5K Resistor Carbon Film 1 4W 5 R 401 4 00427 449 49 9 Resistor Metal Film 1 2W 1 50ppm R 402 4 00086 401 51 Resistor Carb...

Страница 116: ...0 401 47 Resistor Carbon Film 1 4W 5 R 478 4 00030 401 10 Resistor Carbon Film 1 4W 5 R 479 4 00030 401 10 Resistor Carbon Film 1 4W 5 R 480 4 00034 401 10K Resistor Carbon Film 1 4W 5 R 481 4 00034 4...

Страница 117: ...Film 1 4W 5 R 733 4 00034 401 10K Resistor Carbon Film 1 4W 5 R 734 4 00472 407 806 Resistor Metal Film 1 8W 1 50PPM R 735 4 00034 401 10K Resistor Carbon Film 1 4W 5 R 736 4 00473 407 11 0K Resistor...

Страница 118: ...00467 407 2 43K Resistor Metal Film 1 8W 1 50PPM R 853 4 00031 401 100 Resistor Carbon Film 1 4W 5 R 860 4 00034 401 10K Resistor Carbon Film 1 4W 5 R 861 4 00034 401 10K Resistor Carbon Film 1 4W 5...

Страница 119: ...00259 340 74HCT373 Integrated Circuit Thru hole Pkg U 104 3 00299 341 32KX8 70L STATIC RAM I C U 105 3 00261 340 74LS245 Integrated Circuit Thru hole Pkg U 106 3 00158 340 74HC154N Integrated Circuit...

Страница 120: ...d Circuit Thru hole Pkg U 243 3 00207 340 74F191 Integrated Circuit Thru hole Pkg U 244 3 00238 340 74F74 Integrated Circuit Thru hole Pkg U 245 3 00049 340 74HC74 Integrated Circuit Thru hole Pkg U 2...

Страница 121: ...d Circuit Thru hole Pkg U 550 3 00200 340 MC10124 Integrated Circuit Thru hole Pkg U 602 3 00201 340 MC10H105 Integrated Circuit Thru hole Pkg U 604 3 00194 340 MC10H131 Integrated Circuit Thru hole P...

Страница 122: ...L1007 Strip 1 4x1 4 Tin Z 0 0 00122 053 2 1 4 24 Wire 24 UL1007 Strip 1 4x1 4 Tin Z 0 0 00126 053 3 1 2 24 Wire 24 UL1007 Strip 1 4x1 4 Tin Z 0 0 00133 052 7 1 2 22 Wire 22 UL1007 Z 0 0 00134 053 7 1...

Страница 123: ...7 00722 709 SR620 54 Lexan Overlay Z 0 9 00184 917 SR620 SERIAL Product Labels Z 0 9 00552 924 COPPERFOIL 1 Tape All types Miscellaneous Parts List REF SRS PART VALUE DESCRIPTION U 103 3 00345 342 27...

Страница 124: ...108 Parts List SR620 Universal Time Interval Counter...

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