Campbell-scientific SDM-INT8 8-Channel Interval Timer Manual de usuario Pagina 1

SDM-INT88 Channel Interval TimerRevision: 12/11Copyright © 1989-2011Campbell Scientific, Inc.

SDM-INT8 8 Channel Interval Timer Minimum AC Max Freq. voltage RMS (Hz) 20 mV 100 50 mV 400 150 mV 1000 2.5 V - 20 V 4000 3. Connections The

SDM-INT8 8 Channel Interval Timer 10K OHM RESISTOR CR800, CR850, CR9032 (CR9000X), CR9080 (CR9000), CR10(X), CR23X, or CR1000 CR3000,CR5000 12VGSDM-

SDM-INT8 8 Channel Interval Timer 5.1 CRBasic Programming 5.1.1 Instruction SDMINT8 The SDMINT8 instruction is used to program and control the SDMI

SDM-INT8 8 Channel Interval Timer Function8_5: The Function8_5 parameter is a four digit code used to program the timing function of channels 5 throu

SDM-INT8 8 Channel Interval Timer as a trigger to start making measurements. The Dest parameter must be dimensioned large enough to receive the captu

SDM-INT8 8 Channel Interval Timer The equation used to calculate the bit rate depends on the datalogger used. The datalogger will round down to the

SDM-INT8 8 Channel Interval Timer TABLE 2. Instruction 101 Parameter Data Description Type 01: 2 Address (Section 6.1) 02: 4 *Input config; c

SDM-INT8 8 Channel Interval Timer connected to the datalogger must have a unique address. See Appendix A for details on changing the address. 6.2 I

SDM-INT8 8 Channel Interval Timer 6 - Low resolution frequency (kHz)-- For this function to return low resolution data, it must be the only function

SDM-INT8 8 Channel Interval Timer Channel 1: frequency (2) Channel 3: counts on channel 2 since channel 1 (5) Channel 4: frequency (2) Channel 5:

SDM-INT8 8 Channel Interval Timer TABLE 3. Input Frequency (kHz) at Which Processing Time Equals Measuring/Storing Time N 1,2,6,7 3 4 5 8

SDM-INT8 8 Channel Interval Timer TABLE 4. Sampling Interval (Seconds) to Accumulate 8000 Unprocessed Events for Functions 1,2,6,7 Input Number of

SDM-INT8 8 Channel Interval Timer FIGURE 4. Example of Multiple Beginnings and Endings 6.4.2 Option 0: Execution Interval Averaging When Option 0

SDM-INT8 8 Channel Interval Timer Assume the input frequency is 0.5 Hz, and the execution interval of Instruction 101 is 10 Hz. The datalogger input

SDM-INT8 8 Channel Interval Timer Since the number of values returned may be variable, making it difficult to assign a fixed number of input location

SDM-INT8 8 Channel Interval Timer TABLE 5. Definition of Test Memory Option Output Output Definition positive integer = ROM signature, good RAM n

SDM-INT8 8 Channel Interval Timer When using the Capture All Events Option (no averaging), the data are directed to Final Storage of the datalogger r

SDM-INT8 8 Channel Interval Timer ‘Declare Public Variables Public Int8(5) Public PulseCh(2) Dim I ‘Define Data Tables DataTable (Dat5min,1,-1) Dat

SDM-INT8 8 Channel Interval Timer Parameter 6 (Capture All Events) is programmed for 20--to capture edge times on channels 1-5 until 20 edges are rec

SDM-INT8 8 Channel Interval Timer 3: Beginning of Loop (P87) loop to make a 10 sec. 1: 1 Delay delay 2: 20 Loop Count 4: End (P95)

Warranty “PRODUCTS MANUFACTURED BY CAMPBELL SCIENTIFIC, INC. are warranted by Campbell Scientific, Inc. (“Campbell”) to be free from defects in materi

SDM-INT8 8 Channel Interval Timer *Table 1 Programs 01: 1 Sec. Execution interval 1: SDM-INT8 (P101) measure wind speed 1: 00 Address Optio

SDM-INT8 8 Channel Interval Timer *Table 1 Programs 01: .125 Sec. Execution interval 1: If Flag/Port (P91) 1: 21 Do if flag 1 is low 2:

SDM-INT8 8 Channel Interval Timer 26 11: Set Active Storage Area (P80) 1: 1 Final Storage Area 1 2: 1 Array ID or location 12: Sample

Appendix A. Address Jumper The address is factory set at address 00. Figure A1 (also shown inside the INT8 cover) shows the 16 possible positions an

Appendix B. Processing Time Limitations With the exception of the Capture All Events Option or when all channels are programmed for low resolution fr

Appendix B. Processing Time Limitations If the Tt for Output Option XXXX is greater than the specified interval, the extra time will be added to the

Appendix B. Processing Time Limitations Example 3 Given: N = number of channels measured F = Frequency of input signal, kHz Function = frequenc

Appendix B. Processing Time Limitations B-4

Appendix C. INT8 Input Schematic C-1

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SDM-INT8 Table of Contents PDF viewers: These page numbers refer to the printed version of this document. Use the PDF reader bookmarks tab for links

SDM-INT8 Table of Contents ii Appendices A. Address Jumper ... A-1 B. Processing Time Limitations

SDM-INT8 8 Channel Interval Timer FIGURE 1. SDM-INT8 Front Panel 1

SDM-INT8 8 Channel Interval Timer 1. Overview The 8 channel Interval Timer (INT8; see Figure 1) is a measurement module which outputs processed timi

SDM-INT8 8 Channel Interval Timer 2. Specifications Operating voltage: 9.6 V to 16 V DC Current drain: 13 to 20 mA active, 400 microamp quiescent