BC424 USB high-speed 12-bit 4-channel parallel synchronous 12-bit 1MHz/sleeping AD data acquisition card
Introduction to BC424 board
BC424 USB2.0 high-speed 12-bit 4-channel parallel sampling AD module, 4-channel parallel 12-bit 1MHz AD, supports 1MHz X 4 channel speed continuous acquisition, the maximum acquisition length is 256M point channels. Switch quantity: 8 in and 8 out.
Main features and performance of BC424 board
4 parallel 12-bit 1MHz AD, input range 5V/+/-5V.
The input adopts Q6 connector and supports timer and external trigger mode.
It can continuously collect to PC memory at maximum speed.
The maximum acquisition length is 256M points/channel.
Switch quantity: 8 in/8 out.
USB2.0 bus.
Small size.
BC424Is aUSB2.0bus4ParallelAD,12Bit acquisition module, mainly for synchronous high-speed signal measurement and measurement.BC424Supports full-speed, continuous large-capacity sampling, and can directly buffer the sampling signal inPCIn the memory, the sampling length can be set by software, the maximum sampling length512Mpoint/aisle(Equivalent500Sampling time in seconds, corresponding to at least2.5G PCRAM)After the sampling is over, the user can read out the data in sections.
BC424have4Parallel sampling input, switch value8Input/8Road output. useUSBThe bus supports plug and play.BC424All function settings can be controlled by software, no hardware jumpers are required.ADSome use software automatic zero and full-scale correction technology, which can effectively avoid the input zero error.
Performance parameters:
Switch part:
8Input channel(DI0-DI7),performance:
Input voltage:TTLLevel, compatible3Volt level.
High level: greater than2Volt.
Low level: less than0.8Volt.
Input voltage range:0-5Volt.
8Output channels(DO0-DO7),performance:
The output voltage:5Volt level, compatibleTTLLevel.
High level: greater than2.5Volt.
Low level: less than0.5Volt.
Maximum output current:20Milliampere/road.
The switch output is automatically cleared after power-on.
AD section:
AD parameters:
4ParallelAD, Single-ended input. Each input voltage:5Volt±5Volt, software control.
ADconverter:4sheet12BitAD,speed1MHz/road.
Channel input impedance:1Mega ohms.
Input socket:4AQ6socket.
System accuracy: ±0.2% FSR.
Resolution:12Bit.
noise(Peak): Less than ±2LSB(typical,500Sampling points)
Input withstand voltage:-9V-+9V, Instant ±20Volt.
AD working mode
Startup mode: Startup triggered by software or external hardware. Hardware trigger can choose rising or falling edge trigger. The trigger input is a digital signal.
Trigger input connector:Q6socket.
Sampling speed control:16Bit timer, reference clock20MHz, Resolution50nS.
Sampling and data mode: continuous sampling toPCIn the memory, the sampling length is affected byPCPhysical memory limit, maximum available sampling length512Mpoint/aisle.(Note: Required to store dataPCMemory Capacity=Sampling lengthx 4 x 2). During the sampling process, the user can query the completed sampling length. After sampling, the user can read out the sampled data in segments.
Timer and external trigger signal
16Data range of bit timer20-65535, The user can50nSThe step length of continuously sets the sampling speed, the equivalent speed:1MHz – 300Hz.
External trigger is digital signal trigger input, compatibleTTLLevel and3Volt level. Internal pass10KResistor pull up to3.3VVoltage.
Trigger input: high level is greater than2V, The low level is less than0.8V. Input range:0-5Volt.
Input and output socket definition:
BC424There are 5 Q6 connectors AI1-AI4, TRIG, corresponding to analog input channels 0-3 and trigger input respectively. A 20-pin flat cable socket P1 for switch connection. Schematic diagram:
Matching terminal board:
BC424The following terminal boards can be connected:
BC145A:isolation16Enter/16出terminal board. Input voltage0-24Volt/Output:OCOutput, drive current100Milliampere(drop down).