Related Manuals for Measurement Computing BTH-1208LS-OME
Summary of Contents for Measurement Computing BTH-1208LS-OME
- Page 1 BTH-1208LS-OEM Wireless Multifunction DAQ Device User's Guide July 2019. Rev 7 © Measurement Computing Corporation...
- Page 2 Other product and company names mentioned herein are trademarks or trade names of their respective companies. © 2019 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.
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Page 3: Table Of Contents
Table of Contents Preface About this User's Guide ........................5 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-OEM ...................... 6 Functional block diagram ........................... - Page 4 BTH-1208LS-OEM User's Guide Counter ................................23 Memory ................................23 Microcontroller ..............................23 Power ................................24 Bluetooth ................................24 USB .................................. 24 Environmental ..............................24 Mechanical ............................... 25 Signal connectors .............................. 25 Analog signals (J1) ................................25 Digital signals (J2) ................................25 Bulkhead signals (J3) ...............................26...
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Page 5: Preface
Preface About this User's Guide What you will learn from this user's guide This user's guide describes the Measurement Computing BTH-1208LS-OEM wireless data acquisition device and lists device specifications. Conventions in this user's guide For more information Text presented in a box signifies additional information and helpful hints related to the subject matter you are reading. -
Page 6: Introducing The Bth-1208Ls-Oem
Chapter 1 Introducing the BTH-1208LS-OEM The BTH-1208LS-OEM is a multifunction data acquisition device that communicates using Bluetooth® wireless technology. The Bluetooth radio host used with the device must support Bluetooth 2.0 or later. The following Bluetooth stack protocols are supported on Windows: §... -
Page 7: Functional Block Diagram
BTH-1208LS-OEM User's Guide Introducing the BTH-1208LS-OEM Functional block diagram BTH-1208LS-OEM functions are illustrated in the block diagram shown here. Figure 1. Functional block diagram... -
Page 8: Installing A Bth-1208Ls-Oem
Chapter 2 Installing a BTH-1208LS-OEM Unpacking As with any electronic device, you should take care while handling to avoid damage from static electricity. Before removing the board from its packaging, ground yourself using a wrist strap or by simply touching the computer chassis or other grounded object to eliminate any stored static charge. Downloading the software Refer to the BTH-1208LS-OEM product page on our website for information about the supported software you can download. -
Page 9: Installing The Hardware In Usb Mode (Windows Only)
For operation on a Windows operating system, Measurement Computing recommends that you run Windows Update to update your operating system with the latest USB drivers. -
Page 10: Chapter 3 Functional Details
Chapter 3 Functional Details Analog input acquisition modes The BTH-1208LS-OEM can acquire analog input data in three different modes – software paced, hardware paced, and BURSTIO. 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 11: Burstio
BTH-1208LS-OEM User's Guide Functional Details In both Bluetooth mode and USB mode, you can start a hardware-paced scan with either a software command or with an external hardware trigger event. BURSTIO When using BURSTIO, the BTH-1208LS-OEM can acquire data at the maximum throughput of 47kS/s when connected in Bluetooth mode. -
Page 12: Power/Pairing Button
BTH-1208LS-OEM User's Guide Functional Details Power/pairing button The power/pairing button has different functions depending on the power source of the device. 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-OEM radio. -
Page 13: Connector J1
BTH-1208LS-OEM User's Guide Functional Details Connector J1 Header connector J1 provides connections for the analog inputs, analog outputs, and analog ground reference. Refer to Figure 5 on page 17 for the location and orientation of J1. Four-channel differential mode Signal name Pin description Signal name Pin description... -
Page 14: Signal Connections
BTH-1208LS-OEM User's Guide Functional Details Signal connections Analog input You can connect up to eight single-ended analog input connections ( ) or four differential connections ( CH0H/CH0L CH3H/CH3L ) on connector J1. Single-ended configuration When configured for single-ended input mode, eight analog input channels are available. Each analog input has 11-bit resolution (due to restrictions imposed by the A/D converter) and offers a ±10 V analog input range. -
Page 15: Analog Output
BTH-1208LS-OEM User's Guide Functional Details Carefully match the gain to the expected voltage range on the associated channel or an over range condition may occur. Although this condition does not damage the device, it does produce a useless full-scale reading, and can introduce a long recovery time due to saturation of the input channel. -
Page 16: Bulkhead Signals
BTH-1208LS-OEM User's Guide Functional Details Figure 4. Digital I/O external resistor configuration Bulkhead signals The function of the bulkhead pins is explained below. Battery charging Use the BATT+, BATT_MID, and BATT– pins to charge two AA or AAA cells used in series, with BATT_MID connected to the midpoint of the series cells. -
Page 17: Ground
BTH-1208LS-OEM User's Guide Functional Details Ground The analog ground ( ) pin on connector J1 provide a common ground for all analog channels. The ground AGND ) pins on connector J2 provide a common ground for the digital, trigger, counter, and power terminals. Power output The + pin on connector J2 is a 3.3 V output that can source up to 50 mA that is supplied by the power source... -
Page 18: 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 Input voltage range for linear operation CHx to GND Single-ended mode: ±10 V max... -
Page 19: Accuracy
BTH-1208LS-OEM User's Guide Specifications Note 1: Input current is a function of applied voltage on the analog input channels. For a given input voltage, V , the input leakage is approximately equal to (8.181 * V – 12) µA. Note 2: Maximum throughput when scanning is machine dependent. -
Page 20: Analog Output
BTH-1208LS-OEM 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 Throughput (Note 2) Software paced 10 S/s single channel typ, PC dependent... -
Page 21: Digital Input/Output
BTH-1208LS-OEM User's Guide Specifications Digital input/output Table 11. Digital I/O specifications Parameter Specification Digital type 3.3 V open drain Output value mapping 0 written: output drives to DGND 1 written: output is pulled up to 3.3 V via internal resistor Number of I/O (Note 5) Configuration Individually configurable... -
Page 22: External Trigger
BTH-1208LS-OEM User's Guide Specifications External trigger Table 12. Digital trigger specifications Parameter Specification Trigger source External digital; TRIG terminal Trigger mode Software configurable for edge or level sensitive, rising or falling edge, high or low level. Trigger latency 10 µs max Trigger pulse width 1 µs min Schmitt trigger, 47 kΩ... -
Page 23: Counter
BTH-1208LS-OEM User's Guide Specifications Counter Table 14. Counter specifications Parameter Specification Pin name Counter type Event counter Number of channels Schmitt trigger, 47 kΩ pull-down to ground, rising edge triggered Input type Input source CTR screw terminal Resolution 32 bits Maximum input frequency 1 MHz High pulse width... -
Page 24: Power
BTH-1208LS-OEM User's Guide Specifications Power Table 17. Power specifications Parameter Condition Specification Supply current, USB source During enumeration < 100 mA After USB enumeration < 500 mA or connected to USB charger / supply Battery power (Note 8) Two AA cells Alkaline and NiMH cells supported Battery charging NiMH charging supported. -
Page 25: Mechanical
BTH-1208LS-OEM User's Guide Specifications Mechanical Table 21. Mechanical specifications Parameter Specification Dimensions (L × W × H) 99.06 × 68.58 × 14.61 mm (3.90 × 2.70 × 0.58 in.) USB cable length 3 m (9.84 ft) max User connection length 3 m (9.84 ft) max Signal connectors Table 22. -
Page 26: Bulkhead Signals (J3)
BTH-1208LS-OEM User's Guide Specifications Bulkhead signals (J3) Table 26. Bulkhead signal pinout Signal name Pin description Signal name Pin description BATT+ Battery input positive BATT- Battery input negative (2 AA/AAA cells) BATT_MID Battery center tap Ground 10 kΩ thermistor positive 10 kΩ... - Page 27 Measurement Computing Corporation NI Hungary Kft 10 Commerce Way H-4031 Debrecen, Hátar út 1/A, Hungary Norton, Massachusetts 02766 Phone: +36 (52) 515400 (508) 946-5100 Fax: +36 (52) 515414 Fax: (508) 946-9500 http://hungary.ni.com/debrecen E-mail: info@mccdaq.com www.mccdaq.com...
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