4.2. ADuC812 CPU CARD [VPC 812]

                                         4.3. SWITCHED MODE POWER SUPPLY

                                         4.11. MEASUREMENT CARD [VAPC 016]

            We have introduced various AD/DA cards for different Data Acquisition & control applications. These cards work along with a powerful 8051 Microcontroller and interfaced to an IBM PC with RS232 or RS485 port. Optionally LED or LCD display can also be provided. The details of the cards are as follows.                                                    

    4.1 89C51 CPU CARD [VPC-8951]                                                                [TOC]

• Phillips P89C51 Microcontroller

• On chip 64k bytes Flash EEPROM

• 32KB External Data RAM [Expandable upto 64KB]

• 3.6V Nicd Battery backup for external RAM

• One RS232/RS485 serial port, terminated at 9 Pin D Connector

• 50 Pin FRC connector (VPC BUS) for interfacing with VAPC series of Add-on Cards.

• All CPU lines are terminated at 40 Pin FRC connector

• In-System programming with WINISP software

• One RS232 Cable to interface with PC.

• Technical Reference Manual

    4.2. ADuC812 CPU CARD [VPC 812]                                                                  [TOC]

• Analog devices ADuC812 Microconverter at 12 MHz

• On chip features :

  # 8KB onchip flash EE Program memory

  # 640 Bytes onchip flash EE data memory

  # Three 16 bit Timer/Counter

  # On-Chip Programming Voltage Supply

• 32KB external EPROM

• 8KB external data RAM expandable upto 32KB

• 3.6V Nicd Battery backup for external RAM

• 8 Channel, 12 bit on chip ADC at 200 KSPS conversion time

• 2 channel, 8 bit/12 bit (software selectable) on chip DAC of 8µs setting time

• One RS232/RS485 compatible serial port using onchip feature, terminated at "9" pin D male connector

• 50 Pin FRC Connector for interfacing VAPC series of interface cards

• In-System programming with Windows based Software.

• One RS232 Cable to interface with PC.

• ADC input channels & DAC output are terminated at separate connector

• Technical Reference Manual

     4.3. SWITCHED MODE POWER SUPPLY                                                    [TOC]

• 5 Volt/3.0 Amps

• ±12 Volt/300mA

• Short circuit, Over current protected.

     4.4. LCD DISPLAY & KEYPAD CARD [VAPC - 013]                                      [TOC]

• 2 Row x 16 Column LCD Dot Matrix with backlight Alphanumeric Display

• On board 8 keys keypad

• Relevant Software with manual.

     4.5. DAC & Digital output card [VAPC-001]                                                 [TOC]

• 8 bit 2 channel DAC using DAC0800

• 8 digital output with LED Indication

• one 26 pin FRC connector with all output terminations

• Relevant Software with Manual

    4.6. 8 bit ADC & Digital Input Card [VAPC - 004]                                         [TOC]

• 8 bit 8 channel using ADC ADC0809

• 8 digital input

• Relevant Software with Manual

• An-16 Pin Dio Extn. board with Cable

    4.7. DUAL 12 BIT DAC CARD [VAPC - 005]                                                  [TOC]

• 12 bit 2 channel DAC using DAC1220

• ±5 volt Analog output

• Relevant Software with Manual

• Two channel DAC can be configured as 4-20mA or ±5 volt output

• All the outputs are terminated at screw type connectors.

    4.8. 12 BIT INTEGRATING ADC CARD [VAPC - 009]                                     [TOC]

• 8 Channel 12 bit Single ended Analog Inputs [Range : ±5V] using ADC 7109

• Dual Slope ramp type, conversion Speed 7 Sample /Sec

• 2 Channel Analog Inputs can be configured as 4-20mA Inputs.

• Relevant Software with Manual

• An-16 Pin Dio Extn. board with Cable

    4.9. 12 BIT ADC & DAC CARD [VAPC - 011]                                                 [TOC]

• 12 bit, 4 channel Dual ADC using AD7862

• ±3 volt Analog input

• 2 Channels are simultaneously Analog input

• 2 Channel Analog output using AD8582

• 1 Channel ADC can be configured as 4-20mA input

• Channel DAC output can be configured as 4-20mA input output

• Relevant software with Manual

• An-16 Pin Dio Extn. board with cable

    4.10. 5½ DIGIT ADC CARD [VAPC 015]                                                        [TOC]

• One 5½ or 4½ digit ADC using HI7159

• ±2V Analog input

• Useful for building ATE, multichannel measurement etc

• Relevant Software with manual.

    4.11. MEASUREMENT CARD [VAPC 016]                                                      [TOC]

• Designed to work with any type of ADC card

• Consists of, Matrix of 10 relays for voltage, current Resistance, Diode check and continuity measurements

• Relevant Software with manual.

Note : This Measurement card should be purchased along with any one of the ADC card (VAPC 004/ APC 011/VAPC 009/VAPC 015) for measurement of Voltage, Current, Resistance, Diode Check & Continuity.

    4.12. 24 BIT SERIAL ADC INTERFACE BOARD [VAPC-021]                            [TOC]

• Based on AD7714 signal conditioning ADC

• Programmable gain control,front end with gain 1 to 128

• 24 bit resolution

• 5 Channel inputs can be configured as 3 fully differential inputs (or) 5 Pseudo-Differential inputs

• Analog input : 0-2.5V/0-20mA (Depending on the gain)

• Low pass filter with programmable filter cutoffs

• Serial data is captured by the on board 89C2051 microcontroller converted to parallel data and transfer through VPC Bus.

• Self calibration, Zero Calibration and background calibration are possible

• Relevant Software with manual.

4.13. RS232 to RS485 Adapter                                                                      [TOC]

• Useful for Industrial Networking

• To connect upto 32 devices to the RS485 multidrop network

• RS485 Cables with software protocols.

4.14. VPC BUS INTERFACING CABLE :                                                         [TOC]

• FRC connectors provided with the flat cable of length 2 metre with 5 FRC crimped conectors for connecting the VAPC series of ADD on cards