L-Card ADC Series Manual de usuario

User manual

DAQ SYSTEMS DESIGN, MANUFACTURING & DISTRIBUTION

http://en.lcard.ru

[email protected]

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 universal modules of the ADC, DAC

L-Card LLC

117105, Moscow, Varshavskoye 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

Revision history of this document

Date

Document

revision

Contents of the change

09.2014

1.0.0

Preliminary data

05.2015

1.0.1

The operating temperature range has been changed (

fig. 1-1

upgraded Chapter 2, Chapter 4. Added section 4.8, Chapter 7,

technical data corrected – Chapter 5.

05.2016

1.0.2

Order option E-502-X-EU-X has been added to the section 1.1.

10.2016

1.0.3

Fixed bugs in the drawings 6.3

01.2017

1.0.4

Information on the industrial design version is included. Amended fig.

1-1

01.2017 1.0.5 The error about the presence of pull-up resistors on DI inputs is

corrected (s.

5.3

6.3

)

01.2017

1.0.6

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 added 3.3.4.1

06.2017

1.0.8

Comments are added to sec. 2.3.3, section is added. 2.8

06.2017

1.0.9

A warning is added to item.

3.3.5.2

10.2017

1.1.0

Added industrial design versions.

The characteristics according to the results

of preparation of the family of L-CARD voltage measuring converters

for certification as Means of Measurement are brought into

correspondence.

Added to item

3.3.8

. Paragraph added

4.7

When reading this documentelectronically, to facilitate navigation,use the electronic tree

ofthe table of contents (for example,AcrobatReader),as well ashyperlinks within the document.

Contents

CHAPTER 1. GENERAL DESCRIPTION................................................................... 7

1.1. Order information............................................................................................................... 8

1.1.1. Distribution kit ................................................................................................................... 9

1.2. Appearance and main structural elements ................................................................... 10

CHAPTER 2. INSTALLATION AND CONFIGURATION. ....................................... 11

2.1. E-502 configuration "by default"...................................................................................11

2.2. Internal construction elements and E-502 configuration...........................................12

2.2.1. Configuration of the DAC outputs of the connector Analog (DAC1/+15V/AGND/NC

and DAC2/-15V/DGND/NC)....................................................................................................... 13

2.2.2. Configuration of the resolution of the active state of the digital outputs DO1 ... DO16

on the Digital connector................................................................................................................ 13

2.3. Functions of the status LEDs on the front panel..........................................................13

2.3.1. LED1................................................................................................................................. 13

2.3.2. LED2................................................................................................................................. 14

2.3.3. LEDS Link and Activity (on LAN connector) in modifications E-502-P-EU.............14

2.4. RESET functions............................................................................................................... 14

2.5. 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 configuration ....................................................................................15

CHAPTER 3. THE MECHANISM AND PRINCIPLE OF OPERATION OF E-502.. 16

3.1. Conventions........................................................................................................................ 16

3.1.1. Convention on numbering............................................................................................... 16

3.1.2. The assumption on the concept of "frequency" .............................................................16

3.2. Introduction (general information)................................................................................ 16

3.3. Operation principle........................................................................................................... 17

3.3.1. Reference frequency ........................................................................................................ 18

3.3.2. ADC channel.................................................................................................................... 18

3.3.3. Digital input channel........................................................................................................ 19

3.3.4. Digital output and DAC channels ................................................................................... 19

3.3.5. E-502 synchronization general principle........................................................................20

3.3.6. Adjustment of theratio between the time of setting the signal and the resolution for

each ADC channel......................................................................................................................... 22

3.3.7. Relative switching delays in ADC channels. .................................................................23

3.3.8. Relative delays of the ADC, DAC and I/O channels.....................................................25

3.4. Operation principle and function circuit.......................................................................27

3.5. All functional differences of E-502 and L-502..............................................................29

CHAPTER 4. CONNECTION OF SIGNALS. ........................................................... 30

4.1. DGND, AGND circuits..................................................................................................... 30

4.2. GND, 0 V, GND_USB, CHASSIS circuits.....................................................................30

4.3. Location of DGND, AGND, GND, 0 V, GND_USB, CHASSIS circuits on the board

4.4. E-502 connectors description .......................................................................................... 31

4.4.1. Connector Analog. ........................................................................................................... 31

4.4.2. Connector Digital............................................................................................................. 34

4.4.3. JTAG connectors of Blackfin processor......................................................................... 39

4.4.4. Connectors JTAG and UART0 of the ARM controller LPC-4333 (LPC-4337).........39

4.5. The maximum allowable conditions at the inputs and outputs of signal lines........40

4.6. ADC input operation voltage range ...............................................................................41

4.7. Preconditions for correct connection and correct 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 output circuits............................................44

CHAPTER 5. SPECIFICATIONS.............................................................................. 46

5.1. ADC..................................................................................................................................... 46

5.1.1. Limits of the permissible relative basic error of measuring the AC voltage................47

5.1.2. ADC own input noise. ..................................................................................................... 47

5.1.3. ADC inter-channel passing.............................................................................................. 48

5.2. DAC..................................................................................................................................... 48

5.2.1. AC voltage playback error............................................................................................... 48

5.3. Digital inputs...................................................................................................................... 49

5.4. Digital outputs.................................................................................................................... 50

5.5. Synchronization in E-502................................................................................................. 50

5.6. Characteristics of standard interfaces...........................................................................51

5.7. Power supply system and galvanic isolation.................................................................52

5.8. Construction specification. .............................................................................................. 53

5.9. Environmental conditions................................................................................................ 53

5.9.1. Normal conditions............................................................................................................ 53

5.9.2. Operating conditions........................................................................................................ 53

CHAPTER 6. CONNEXION SAMPLES.................................................................... 54

6.1. ADC entry point connection............................................................................................ 54

6.1.1. Connecting to the ADC entry point of single-phase voltage source.............................54

6.1.2. Connection to ADC input with up to 16 differential voltage sources ..........................57

6.1.3. Connection to the ADC input for the case where the common wire of the signal

sources has a offset potential Ucm of max. ± 1 V relative to the AGND circuit.....................58

6.1.4. Measurement of the voltage drop on the circuit section in the differential mode (up to

16- channels).................................................................................................................................. 58

6.1.5. Differential connection of the transformer (throttle) winding with midpoint and offset

potential with respect to AGND................................................................................................... 59

6.1.6. Example of mixed connection of voltage sources "with common ground" and

differential...................................................................................................................................... 59

6.1.7. 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 connection of a remote voltage source through a pair of long line

with a wave resistance Zw with matching on the signal source side.........................................62

6.2. Connecting the DAC outputs...........................................................................................63

6.2.1. Mode "with common ground" 2-channel output ±5 V .................................................. 63

6.2.2. Single-channel differential output ±10 V....................................................................... 63

6.3. Connecting the digital inputs and outputs. ...................................................................64

6.3.1. Connecting the LED or the optron input. Option 1........................................................ 64

6.3.2. Connecting the LED or the optron input. Option 2........................................................ 64

6.3.3. Connecting a contact to a digital input ........................................................................... 64

6.3.4. Connect the optron output to the synchronization input................................................ 64

CHAPTER 7. DESIGN DATA ................................................................................... 65

7.1. Circuit plate draft. ............................................................................................................ 65

7.2. Front panel draft............................................................................................................... 66

7.3. Back panel draft................................................................................................................ 66

Chapter 1. General description.

L-Card presents a data collection system E-502 on the basis of USB and Ethernet interfaces.

E-502 – is a system developed by LLC "L-Card". It is made on the basis of high quality production

of the company, it provides its own technical support and maintenance.

E-502 has the continuity of architecture with L-502: only the interface with the PC with the

same functionality as the L-502 is subjected to processing, except for the small functional

differences that will be discussed in this manual (s. 3.5, p. 29). The E-502 and L-502 software has

also has continuity (common library functions of the upper software level of the PC, identical to

the software at the Blackfin level).

The most important characteristics of E-502:

•ADC: 16 bits, conversion frequency up to 2 MHz, with switching to 16 differential channels or 32

channels with common ground. Subranges: ±10 V”, “±5 V”, “±2 V”, “±1 V”, ±0.5 V, ±0.2 V.

•Modification E-502-…-…-D has DAC support: 16 bits, 2 channels, 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

mode with a frequency of up to 2 million words per second.

•Digital output: up to 16 digital outputs of general purpose, with separate control of the output

resolution of the high and low byte, asynchronous or synchronous data output mode with a frequency

of up to 1 million words per second.

•Processor (modification E-502-P-…) Blackfin 530 MHz, SDRAM 32 MB, the JTAG connector

allows to activate ready "advanced" signal processing and control functions inside the E-502 or

independently to be engaged in low-level programming of these functions.

•Galvanic isolation provides isolation of digital and analogous signal inputs/outputs to all computer

circuits.

•The system can consist of one or more E-502 modules, synchronized from each other, from an internal

or external synchronization source with an ADC conversion frequency of up to 1.5 MHz.

•Design version "I" (E-502-…-…-…- I) has an industrial temperature range and a lacquer seal.

The E-502 notation system is given in fig. 1-1.

E-502- - - -

Модификация

преобразователя

P- Процессор Blackfin 500 МГц, ОЗУ

32 МВ и порт JTAG присутствуют

X- Отсутствуют процессор Blackfin,

ОЗУ и разъём JTAG

ЦАП (2 канала)

присутствует

ЦАП

отсутствует

Преобразователи напряжения

измерительные

I+5…+55

-40…+60

С лакировкой

Нет

индекса

USB 2.0

Ethernet 100 Мбит/с

USB 2.0

Fig. 1-1. The notation system of the E-502 module

1.1. Order information

The E-502 versions and design versions available for ordering:

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.

When choosingthe modificationoftheE-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.

Information on other modifications and design versions you can find in the L-Card sales

department (en@lcard.ru).

No DAC

DAC (2 channels)

yes

- There is no Blackfin RAM processor

and JTAG connector

- There is Blackfin processor 500 MHz,

RAM, 32 MB, and JTAG connector

Mbit/s

Measuring voltage

converters

index

With polish

Converter

modification

1.1.1.Distribution kit

Except for the E-502 module, the distribution kit includes the following accessories, depending

on the version:

Accessory Quantity

Note

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

DB-37F connector 1 pc. 1 pc. 1 pc. Cable receptacle

DB-37M connector 1 pc. 1 pc. 1 pc. Cable plug

Cover DP-37C 2 pcs. 2 pcs. 2 pcs. 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. 1 pc. 1 pc.

Power adapter network

adapter ~ 220V/ = 12V,

0.5A, unstabilized

1 pc. 1 pc. 1 pc. Linear transformer power supply

for mains supply ~220 V, 50 Hz

Jumper 2 pcs. 2 pcs. 2 pcs. For all E-502 jumper

modifications, the enable

configuration of the digital

outputs is included.

The remaining jumpers are pre-

installed inside the E-502 by

"default", s. 2.1, p. 11

1.2. Appearance and main structural elements

Fig.1-2. Front view (front panel)

Fig.1-3. Back view (back panel)

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