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6.1.7.3. Differential mode, offset potential
due to current source in regard to AGND

6.1.7.4. Differential mode, isolated
current source

Only for E-502 voltage subbands:

±2 V, ±1 V,

±0.5 V, ±0.2 V

Fixed ADC ± U measurement subband must correspond to U=I

MAX

*R, while the current source must have

a voltage margin of, at least, U. Resistor R should always be located close to the ADC input. Resistors R,

R1, R2 must be less than 50 Ω in multichannel mode at the maximum switching freque

ncy.

|Ucm| ≤ 1 В

Y1 (X2-X16)

E-502

AGND

X1 (Y2 -Y16)

см

E-502

AGND

X1 (X2 -X16)

Y1 (Y2 -Y16)

R = R1 + R2

Содержание ADC Series

Страница 1: ...IGN MANUFACTURING DISTRIBUTION http en lcard ru en lcard ru Revision 1 1 0 October 2017 E 502 P EU D I E 502 P EU D E 502 X EU X E 502 X U D E 502 X U X Measuring voltage converters A family of univer...

Страница 2: ...vskoye shosse 5 block 4 bld 2 tel 7 495 785 95 19 fax 7 495 785 95 14 Internet contacts http en lcard ru E Mail Sales department en lcard ru Customer care en lcard ru E 502 Module Copyright 2014 2017...

Страница 3: ...0 6 The operating temperature range in the table of section 5 9 has been brought into correspondence amended the section 5 8 the tables in subparagraphs 1 1 1 are amended 2 1 02 2017 1 0 7 Paragraph...

Страница 4: ...5 Serial number E 502 version number Module identification in a multi module configuration 15 2 6 E 502 application as a part of user programs 15 2 7 Software installation 15 2 8 Ethernet interface co...

Страница 5: ...t settings of the input of the ADC E 502 43 4 7 1 The physical causes of possible problems 43 4 7 2 Conditions for correct E 502 connection and settings 43 4 8 Calculation of total load power of E 502...

Страница 6: ...7 Connecting a power supply to the ADC input 59 6 1 8 The coordinated connection of remote sources of current or voltage through a long line with a wave impedance Zw 61 6 1 9 The coordinated connectio...

Страница 7: ...output 5 V asynchronous or synchronous mode with a conversion frequency of up to 1 MHz for each channel Digital input up to 17 digital inputs of general purpose asynchronous or synchronous data output...

Страница 8: ...E 502 module for the order it should be noted that when you contact the L Card sales department the previously purchased E 502 module can not be modified to another modification or design version Inf...

Страница 9: ...cs For DB 37 connectors DJK 10A straight connector 1 pc 1 pc 1 pc To connect low voltage power from a non standard power source Cable Ethernet Pathcord 5e L 1 5 m 1 pc USB cable type A B L 1 8 m 1 pc...

Страница 10: ...1 2 Appearance and main structural elements Fig 1 2 Front view front panel Fig 1 3 Back view back panel...

Страница 11: ...n fig 2 1 on the left Programmed control no jumper on fig 2 1 on the left Programmed control no jumper on fig 2 1 on the left Output setting DAC1 15V AGND NC on Analog connector DAC1 See fig 2 1 DAC1...

Страница 12: ...ws and disassemble the housing covers Reassemble in the reverse order DAC1 15V AGND DAC1 15V AGND DAC2 15V GNDD DAC2 15V AGND 1 JTAG Blackfin JTAG ARM 1 1 UART ADSP BF523 FPGA Cyclone IV SDRAM SDRAM A...

Страница 13: ...ility of programmed transfer to the third state in this case you need to install one or two additional jumpers according to fig 2 1 This setting is made when the initial high impedance state of the di...

Страница 14: ...be either a sign of E 502 failure or a sign of the heavy external electromagnetic environment in which the E 502 is located which led to a malfunction Contact the L Card technical support if the E 502...

Страница 15: ...mention in the documentation for his system the E 502 module of the L Card production as the component part the completing unit 2 7 Software installation To install the necessary drivers and libraries...

Страница 16: ...to have their own low level programming of the processor possibly with the use of the JTAG emulator s 4 4 3 p 39 All E 502 modifications have a galvanic isolation of the signal circuits for L 502 a ga...

Страница 17: ...r in the Blackfin processor E 502 has a mechanism of the intermodule synchronization s 3 3 5 p 20 to form a single synchronous I O system E 502 has a 32 bit data word format in the format of which bes...

Страница 18: ...and the size of the control table n can be set from 1 to 256 In each cell of the control table the physical number of the ADC polling channel is prescribed Within the frame the control table will be...

Страница 19: ...other channels assigned as synchronous the same synchronous mode is supported either a streaming or an self oscillator from an internal buffer 3 3 4 1 Restrictions on the current implementation of asy...

Страница 20: ...as the master We list all possible options for user settings for selecting sources of the start event of the E 502 I O system Program start from PC default setting On the signal from the input DI_SYN...

Страница 21: ...ation signal are supported Enable of ADC data on the edge drop of an analog or digital signal Enable of ADC data at a level above the threshold or below the threshold for analog synchronization or at...

Страница 22: ...it But if it is required to use the E 502 at a data acquisition rate for each channel less than the maximum and it is possible to reduce the switching frequency then in E 502 with internal synchroniza...

Страница 23: ...he high frequency components of the spectrum above the Nyquist frequency of 0 5 fch for a given physical channel associated with one or more logical channel Note in passing that digital filtering by t...

Страница 24: ...tsw between neighboring channels of one frame and equal tsw td between the nearest channels of neighboring frames separated by interframe delay If the averaging mode is used nav 1 where nav are assig...

Страница 25: ...500 ns 2 MHz 667 ns 1 5 MHz Duration of the signal pulse CONV_OUT tW 50 ns Group delay time of analog channel of ADC channel in E 502 tADC_SU 15 70 ns The delay time from the front CONV_OUT to the sa...

Страница 26: ...n tST_H 150 ns The time to set the data at the DI input tDI_SU 5 ns Data hold time at the DI input tDI_H 1 ns DO delay time relative to the front CONV_OUT tDO 6 ns The group delay time of the signal a...

Страница 27: ...02 modification All E 502 modifications have a LPC4333 LPC4337 ARM controller and a galvanic isolation ARM LPC4333 4337 HOST DMA ADSP BF523 E 502 FPGA Cyclone IV JTAG X1 X16 Y1 Y16 GND32 DI_SYN1 DI_SY...

Страница 28: ...turned on the error is indicated by LED2 s 2 3 2 p 14 Processors LPC4333 LPC4337 are identical in terms of their resources involved and the option of bundling does not affect the consumer properties...

Страница 29: ...xternal synchronization DI_SYN2 Is present separately on the internal connector L 502 Programmable pull up resistor of DI_SYN2 input Is combined with D14 input Programmable pull up resistor of DI14 DI...

Страница 30: ...dule in the non isolated part 0 V is a circuit of the zero potential of the low voltage E 502 power input GND_USB is a common wire circuit of USB interface CHASSIS is a circuit for chassis connection...

Страница 31: ...row type DRB 37M plug on the front panel of the E 502 The conductive connector contact piece shield is electrically connected to the GND signal ground circuit On the shield of the cable part of the c...

Страница 32: ...el voltage input 1 16 for differential mode Input channels 17 32 for the mode with common ground Operation voltage range 10 V see the details in section 4 6 p 41 Unused inputs X 1 16 are recommended t...

Страница 33: ...In the with common ground mode common inverting channel input 1 32 For all modes must be connected to AGND in differential mode to increase noise immunity In the with common ground mode the connectio...

Страница 34: ...gnal cable can be directly sealed The Digital connector shield has no contact with the DGND circuits and the remaining circuits of the Digital connector Fig 4 4 Connector Digital 1 20 2 3 4 5 6 7 8 9...

Страница 35: ...h the E 502 power off The input is compatible with the output logic level of the TTL CMOS cells with a supply voltage of 2 5 V to 5 V There is a Schmitt trigger at this input DI16 START_IN DGND Input...

Страница 36: ...ut Output 3 3 V Output 3 3 V supply external digital nodes Short circuit of the 3 3 V circuit is undesirable but permissible causes heat protection of the internal stabilizer For the maximum permissib...

Страница 37: ...ow logic level on the last slave module in the circuit It is recommended that no more than 2 adjacent slaves are connected to the same chain with the master Each slave in the circuit for example E 502...

Страница 38: ...ows an almost important case of implementing interfaces with various devices that have an 8 bit bidirectional data bus input and output control lines It should be noted that DI14 DI15 DI16 inputs have...

Страница 39: ...To debug your own Blackfin software on the board you probably will not need to modify the ARM controller software that performs the interface function E 502 However for advanced users such a modifica...

Страница 40: ...it Digital inputs of dual purpose DI14 DI_SYN2 DI15 ONV_IN DI16 START_IN From 0 4 to 3 6 V relative to DGND circuit DO digital outputs From 0 4 to 3 6 V relative to the DGND circuit the current is not...

Страница 41: ...GND are indicated In the first two circuits the voltage UYi UYj should not exceed 1 V in order to ensure the operating mode and in the latter scheme the common mode voltage UXi UYi 2 must be within 1...

Страница 42: ...E 502 Z1 UYi GND E 502 Z UYi GND32 X Y i i L 502 X Y j j GND2 GND1 Z2 X j Y j GND1 UYj L 502 L 502 X i Y i GND E 502 U GND Z UYi UXi Differential VS and differential mode L 502 Remote single phase VS...

Страница 43: ...itch when tuned to multi channel mode with E 502 default settings may not only be a big advantage of the ADC E 502 in the high speed ADC input interrogation but it can also be a problem because of the...

Страница 44: ...le averaging factor nav 1 s 3 3 6 for the required channel polling frequency and the necessary signal conditioning time nsu 11 Do not exceed the operating voltage ranges at the inputs X Y GND32 s 4 6...

Страница 45: ...st be calculated either through the known load current by the formula or through the known load resistance at the i th output The power summands of the corresponding j th outputs must be calculated ei...

Страница 46: ...ntial measurement mode on the subbands 10 V 5 V The average value of the voltage at the inputs X and Y for the differential mode on the measurement subranges 2 V 1 V 0 5 V 0 2 V Voltages at the GND32...

Страница 47: ...cl 1 02 0 3 0 X X AC more than 100 to 300 incl 1 03 0 1 X X AC more than 300 to 999 1 05 0 5 X X AC Notes 1 The error in measuring the AC voltage is normalized in the differential connection scheme E...

Страница 48: ...ends on many factors of the software and hardware environment DAC bit depth bit 16 Output modes Asynchronous Synchronous streaming synchronous self oscillator Output signal range 5 V Operating range o...

Страница 49: ...resistors activation for inputs DI1 DI16 No pull up resistors unlike L 502 for inputs DI_SYN1 DI_SYN2 Regardless of each input Maximum speed in synchronous mode 2 Mwords s Maximum speed in asynchronou...

Страница 50: ...cal zero max 2 4 V logical unit Output logic elements with a supply voltage of 3 3 V Output resistance typical value 110 Ohm Maximum leakage current in operating mode in high impedance state 1 A High...

Страница 51: ...t via Ethernet on output 5 Mwords s 2 5 Mwords s To be confirmed Interfaces of ADSP BF523 E 502 P signal processor Interface with a computer HOST DMA 16 bits Main interface of input output for ADC DAC...

Страница 52: ...ly isolated circuits 10 kV s The method for estimating the load power is given in p 4 8 p 44 The total load power taken from all outputs E 502 according to the method of estimating the load power is g...

Страница 53: ...under climatic influences the converters in addition to the versions with the letter index I correspond to GOST 22261 group 3 with an extended range of operating temperatures environment temperature f...

Страница 54: ...not cover all the features of the connection for your particular case If necessary please contact en lcard ru or in the conference on the site en lcard ru 6 1 ADC entry point connection 6 1 1 Connecti...

Страница 55: ...t of the voltage in the frequency band is R2 R1 R2 If multichannel mode it is necessary that 1 FADC R1 R2 C 10 10 R1 R2 or if R2 is not present then 1 FADC R1 C 10 10 R1 where FADC is the ADC conversi...

Страница 56: ...t be connected like this 6 1 1 11 Inductive pickup Mode with common ground 6 1 1 12 Inductive pickup Differential mode Resistor R performs the function of a damper to suppress the oscillation process...

Страница 57: ...502 input Only for voltage subbands 2 V 1 V 0 5 V 0 2 V It is necessary R1 50 if the switching frequency is maximal R1 R2 R3 R4 Locate R1 R2 close to E 502 input The voltage transfer ratio is R1 R2 R1...

Страница 58: ...ion 4 6 p 412 6 1 4 Measurement of the voltage drop on the circuit section in the differential mode up to 16 channels This connection allows you to measure the voltage drop across resistor R2 For a si...

Страница 59: ...ADC input 6 1 7 1 Mode with common ground 6 1 7 2 Differential mode Fixed ADC U subband must correspond to U IMAX R and the current source must have a voltage margin of at least U Resistor R should a...

Страница 60: ...V 0 2 V Fixed ADC U measurement subband must correspond to U IMAX R while the current source must have a voltage margin of at least U Resistor R should always be located close to the ADC input Resisto...

Страница 61: ...y matching of the long line on the side of the signal receiver 6 1 8 1 Mode with common ground 6 1 8 2 Differential mode 6 1 8 3 Differential connection of an isolated current source or voltage R1 R2...

Страница 62: ...tor on the signal source side The cable must be paired shielded twisted pairs with wave resistance of wire pairs Zw Below is a practical case where a broadband operational amplifier acts as a remote v...

Страница 63: ...preconfigured with jumper see p 2 2 1 p 13 6 2 1 Mode with common ground 2 channel output 5 V 6 2 2 Single channel differential output 10 V The differential output 10 V is realized as a difference vo...

Страница 64: ...act The recommended resistor R1 nominal is from 3 to 5 kOhm The open contact corresponds to a logical zero The recommended resistor R1 nominal is from 3 to 5 kOhm 6 3 4 Connect the optron output to th...

Страница 65: ...Chapter 7 Design data 7 1 Circuit plate draft Note diameter of 4 ports taking into account metallization 3 05 mm 4 ports of 3 2...

Страница 66: ...7 2 Front panel draft 7 3 Back panel draft 2 ports of 5 5...

Страница 67: ...tables Table 4 1 Connector Analog 32 Table 4 2 Connector Digital 35 Table 4 3 Maximum permissible E 502 input output conditions 40 Table 4 4 Maximum permissible through currents by common wires circu...

Страница 68: ...ous I O diagram 25 Fig 3 5 Block diagram 27 Fig 4 1 Internal connection of the common wires circuits in E 502 30 Fig 4 2 The location of the common wires circuits on the E 502 board 31 Fig 4 3 Connect...

Страница 69: ......

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