Related Manuals for Measurement Computing BTH-1208LS
Summary of Contents for Measurement Computing BTH-1208LS
- Page 1 BTH-1208LS Wireless Multifunction DAQ Device User's Guide Document Revision 1 August 2013 © Copyright 2013 Distributed By MicroDAQ, LLC 603-746-5524 www.MicroDAQ.com...
- Page 2 © 2013 Measurement Computing Corporation. All rights reserved. No part of this publication may be reproduced, stored in a retrieval system, or transmitted, in any form by any means, electronic, mechanical, by photocopying, recording, or otherwise without the prior written permission of Measurement Computing Corporation.
-
Page 3: Table Of Contents
What you will learn from this user's guide ......................5 Conventions in this user's guide ......................... 5 Where to find more information ......................... 5 Chapter 1 Introducing the BTH-1208LS ........................ 6 Device features ..............................6 Functional block diagram ........................... 7 Chapter 2 Installing a BTH-1208LS ........................ - Page 4 BTH-1208LS User's Guide Accuracy ..................................21 Noise performance ................................21 Analog output ..............................22 Digital input/output............................22 External trigger ..............................23 External clock input ............................23 Counter ................................24 Memory ................................24 Microcontroller ..............................24 Power ................................25 Bluetooth ................................25 USB .................................. 25 Environmental ..............................
-
Page 5: Preface
Italic text is used for the names of manuals and help topic titles, and to emphasize a word or phrase. Where to find more information Additional information about the BTH-1208LS is available on our website at www.mccdaq.com. You can also contact Measurement Computing Corporation by phone, fax, or email with specific questions. -
Page 6: Introducing The Bth-1208Ls
Chapter 1 Introducing the BTH-1208LS The BTH-1208LS is a multifunction data acquisition device that communicates using Bluetooth® wireless technology. The device is supported under the following operating systems: Microsoft® Windows® 8/7/Vista® (SP2)/XP (SP3) (32-bit or 64-bit) Android™ 3.1 or later The Bluetooth radio host used with the device must support Bluetooth 2.0 or later. -
Page 7: Functional Block Diagram
BTH-1208LS User's Guide Introducing the BTH-1208LS Functional block diagram BTH-1208LS functions are illustrated in the block diagram shown here. Figure 1. Functional block diagram Distributed By MicroDAQ, LLC 603-746-5524 www.MicroDAQ.com... -
Page 8: Installing A Bth-1208Ls
Android device (tablet, phone, or mini-PC). The BTH-1208LS must be paired with the host device before it can establish a wireless connection and transmit acquired data to the device. A BTH-1208LS only has to be paired once with a particular host device. -
Page 9: Installing The Hardware In Usb Mode (Windows Only)
The BTH-1208LS cannot be paired when powered by a USB host device. To pair the BTH-1208LS as a Bluetooth device, make sure the device is not connected to a USB host, and complete the following steps (refer to Figure 2 on page 12 for the location of device components referenced in this section): Make sure the host device is configured to host a Bluetooth device. -
Page 10: Calibrating The Hardware
Calibrating the hardware Factory calibration The Measurement Computing Manufacturing Test department performs the initial factory calibration. Return the device to Measurement Computing Corporation when calibration is required. The recommended calibration interval is one year. Field calibration Field calibration is not supported. -
Page 11: Chapter 3 Functional Details
Chapter 3 Functional Details Analog input acquisition modes The BTH-1208LS can acquire analog input data in three different modes – software paced, continuous scan, and burst scan. Software paced mode In software paced mode you can acquire one analog sample at a time. You initiate the A/D conversion by calling a software command. -
Page 12: Burst Scan
In burst scan mode (BURSTIO) you can acquire data at the maximum throughput of 50 kS/s from the BTH-1208LS when connected in Bluetooth mode. BURSTIO doesn’t offer any advantage in USB mode, since these rates are supported for BLOCKIO in USB mode. -
Page 13: Power/Pairing Button
The term pairing refers to one function of the button – to put the device in pairing mode so it can establish an association between the Bluetooth radio on the host device and the BTH-1208LS radio. Button functions are listed in the table below. -
Page 14: Screw Terminals
BTH-1208LS User's Guide Functional Details Screw terminals The screw terminals provide the followings: Eight analog inputs ( CH0H/CH0L CH3H/CH3L Two analog outputs ( AOUT0 AOUT1 Eight digital I/Os ( DIO0 DIO7 One external trigger input ( TRIG ... -
Page 15: Signals
BTH-1208LS User's Guide Functional Details The differential mode pinout is shown in Figure 4. Figure 4. Differential mode pinout Signals Analog input You can connect up to eight single-ended analog inputs ( ) or four differentials ( CH0H/CH0L CH3H/CH3L Single-ended configuration When configured for single-ended input mode, eight analog input channels are available. -
Page 16: Analog Output
BIP5V BIP10V When a scan begins with the gain queue enabled, the BTH-1208LS reads the first element, sets the appropriate channel number and range, and then acquires a sample. The properties of the next element are then retrieved, and another sample is acquired. This sequence continues until all elements in the gain queue have been selected. -
Page 17: Digital I/O
BTH-1208LS User's Guide Functional Details Digital I/O You can connect up to eight digital I/O lines to DIO0 through DIO7 . When configured for input, the digital terminals can detect the state of any TTL-level input. Digital input voltage ranges of up to 0 to 5.5 V are permitted, with thresholds of 0.8 V (low) and 2.0 V (high). -
Page 18: Trigger Input
Caution! The pin is an output. Do not connect to an external power supply or you may damage the BTH-1208LS and possibly the computer. For more information about signals For more information about analog and digital signals, refer to the Guide to DAQ Signal Connections at www.mccdaq.com/pdfs/DAQ-Signal-Connections.pdf. -
Page 19: Mechanical Drawings
BTH-1208LS User's Guide Functional Details Mechanical drawings Figure 7. Housing and circuit board dimensions Distributed By MicroDAQ, LLC 603-746-5524 www.MicroDAQ.com... -
Page 20: Specifications
Chapter 4 Specifications All specifications are subject to change without notice. Typical for 25°C unless otherwise specified. Specifications in italic text are guaranteed by design. Analog input Table 1. Analog input specifications Parameter Condition Specification A/D converter type Successive approximation type Single-ended mode: ±10 V max Input voltage range for linear operation CHx to GND... -
Page 21: Accuracy
BTH-1208LS User's Guide Specifications Input current is a function of applied voltage on the analog input channels. For a given input Note 2: voltage, V , the input leakage is approximately equal to (8.181 * V – 12) µA. Maximum throughput when scanning is machine dependent. -
Page 22: Analog Output
BTH-1208LS User's Guide Specifications Table 7. Noise performance, single-ended mode Range Typical counts ±10 V 0.91 Analog output Table 8. Analog output specifications Parameter Condition Specification Resolution 12-bits, 1 in 4,096 Output range 0 V to 2.5 V Number of channels... -
Page 23: External Trigger
BTH-1208LS User's Guide Specifications Input low voltage limit –0.5 V absolute min 0 V recommended min Output voltage range 0 V to 3.3 V (no external pull up resistor) 0 V to 5.5 V max (Note 6 ) Output off state leakage current 1.0 µA typ. -
Page 24: Counter
BTH-1208LS User's Guide Specifications Schmitt trigger hysteresis 0.76 V typ 0.4 V min 1.2 V max Input high voltage threshold 1.74 V typ 1.3 V min 2.2 V max Input high voltage limit 5.5 V absolute max Input low voltage threshold 0.98 V typ... -
Page 25: Power
BTH-1208LS User's Guide Specifications Power Table 17. Power specifications Parameter Condition Specification Supply current, USB source During enumeration < 100 mA After USB enumeration or < 500 mA connected to USB charger / supply Battery power Two AA cells Alkaline, NiCd, and NiMH cells supported Battery charging NiMH and NiCd charging supported. -
Page 26: Signal Connector
BTH-1208LS User's Guide Specifications User connection length 3 m (9.84 ft) max Signal connector Table 22. Screw terminal specifications Parameter Specification Connector type Screw terminal Wire gauge range 16 AWG to 30 AWG Screw terminal pinout Differential mode pinout Table 23. Screw terminal pinout... -
Page 27: Declaration Of Conformity
Electrical equipment for measurement, control and laboratory use. Date of Issue: June 24, 2013 Measurement Computing Corporation declares under sole responsibility that the product BTH-1208LS to which this declaration relates is in conformity with the relevant provisions of the following standards or other documents: ... - Page 28 Measurement Computing Corporation 10 Commerce Way Suite 1008 Norton, Massachusetts 02766 (508) 946-5100 Fax: (508) 946-9500 E-mail: info@mccdaq.com www.mccdaq.com Distributed By MicroDAQ, LLC 603-746-5524 www.MicroDAQ.com...
Need help?
Do you have a question about the BTH-1208LS and is the answer not in the manual?
Questions and answers