Measurement Computing BTH-1208LS-OEM User Manual Download Page 24

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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 or
connected to USB charger /
supply

< 500 mA

Battery power (Note 8)

Two AA or two AAA cells
Alkaline, NiCd, and NiMH cells supported

Battery charging

NiMH and NiCd charging supported.
Alkaline cells automatically detected and not
charged.

+VO power available

After USB enumeration or
Bluetooth connection

3.3 V nominal

+VO output current

After USB enumeration or
Bluetooth connection

50 mA max

Note 8:

When operating from batteries there is a user configurable power-off timer that will turn the device off
when there is no host connection for the specified amount of time. The timer can be disabled or set to a
value from 1 – 255 minutes.

Bluetooth

Table 18. Bluetooth specifications

Parameter

Specification

Device type (Note 9)

Bluetooth 2.1

Device compatibility

Backwards compatible with Bluetooth 2.0, 1.2, and 1.1

Bluetooth profile

Serial Port Profile (SPP)

Radio range

Class II, 10 m typ

Note 9:

The Bluetooth radio is disabled when the device is connected to a USB host.

USB

Table 19. USB specifications

Parameter

Specification

Device type

USB 2.0 full speed

Device compatibility

USB 1.1, USB 2.0

Environmental

Table 20. Environmental specifications

Parameter

Specification

Operating temperature range

0 °C to 50 °C

Storage temperature range

–40 °C to 70 °C

Humidity

0% to 90% non-condensing

Summary of Contents for BTH-1208LS-OEM

Page 2: ... in any form by any means electronic mechanical by photocopying recording or otherwise without the prior written permission of Measurement Computing Corporation Notice Measurement Computing Corporation does not authorize any Measurement Computing Corporation product for use in life support systems and or devices without prior written consent from Measurement Computing Corporation Life support devi...

Page 3: ...hardware 9 Chapter 3 Functional Details 10 Analog input acquisition modes 10 Software paced mode 10 Hardware paced mode 10 BURSTIO 11 Board components 11 USB connector 11 Power pairing button 12 LEDs 12 Connector J1 13 Connector J2 13 Connector J3 13 Signal connections 14 Analog input 14 Analog output 15 External clock input 15 Digital I O 15 External pull up pull down capability 15 Bulkhead signa...

Page 4: ...8LS OEM User s Guide 4 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 ...

Page 5: ...t is used for the names of objects on a screen such as buttons text boxes and check boxes italic text 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 OEM is available on our website at www mccdaq com You can also contact Measurement Computing Corporation with specific que...

Page 6: ...ple rate in Bluetooth continuous scan mode 47 kS s sample rate in Bluetooth BURSTIO mode and when communicating over USB connection Software selectable analog input ranges of 10 V SE and 20 V 10 V 5 V 4 V 2 5 V 2 0 V 1 25 V and 1 0 V DIFF Two 12 bit analog outputs Eight individually configurable digital I O channels One 32 bit event counter One external digital trigger input One external clock inp...

Page 7: ...hown here Figure 1 Functional block diagram 2 Microcontroller 8 Analog Input 8 Single Ended Channels 11 bit or 4 Differential Channels 12 bit Analog Output 2 Channels J1 J3 Bluetooth Module USB Power Supplies with Shutdown and Soft Start Charger Control 3 3 V 1 8 V to 5 5 V Digital I O Trigger Input 8 Event Counter 1 Channel 32 bit J2 1 Clock Input ...

Page 8: ...e BTH 1208LS OEM can be paired or connected when powered by batteries standard or rechargeable an external USB power supply The BTH 1208LS OEM cannot be paired when powered by a USB host device To pair the BTH 1208LS OEM 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 11 for the location of device components refer...

Page 9: ...except for the pairing code can be changed when the BTH 1208LS OEM is either physically or wirelessly connected to the host device The pairing code can only be changed when the BTH 1208LS OEM is physically connected to the host device You can configure the following Bluetooth settings on the BTH 1208LS OEM through software For example if you are using the device in a Windows environment you can co...

Page 10: ...ta from up to eight channels The analog data is acquired and converted to digital values until you stop the scan When communicating over a Bluetooth connection the maximum sample rate of 1024 S s is an aggregate rate The total acquisition rate for all channels cannot exceed 1024 S s The following table lists the sample rates when scanning from one to eight channels in Bluetooth mode Maximum per ch...

Page 11: ...is still limited so the process can take several seconds Time must be allowed between scans for the acquisition and the transfer of the data The maximum sample rate is an aggregate rate The total sample rate using BURSTIO is 47 kS s per channel for any or all channels An error occurs if you exceed the FIFO capacity and acquire more than 12 288 samples in BURSTIO mode Board components The BTH 1208L...

Page 12: ...utton for 2 seconds To remove the device from pairing mode press and hold the button again for 2 seconds Powered by USB host port or hub The power pairing button is disabled LEDs The Power LED indicates the power status of the device The Status LED indicates the communication status of the device LEDs cannot be disabled LED states are listed in the tables below Power and Status LED behavior Power ...

Page 13: ...or J2 provides connections for the DIO external clock input trigger counter power output and digital ground reference Refer to Figure 5 on page 17 for the location and orientation of J2 Pin Signal name Pin description Pin Signal name Pin description 1 DIO0 Digital input output 0 2 GND Digital ground 3 DIO1 Digital input output 1 4 CTR Counter input 5 DIO2 Digital input output 2 6 TRIG_IN Digital t...

Page 14: ...through three wires Connect the wire carrying the signal to be measured to CHxH Connect the wire carrying the reference signal to CHxL Connect the third wire to AGND In differential mode the following two requirements must be met for linear operation Any analog input must remain in the 10 V to 20 V range with respect to ground at all times The maximum differential voltage on any analog input pair ...

Page 15: ... permitted with thresholds of 0 8 V low and 2 0 V high Each DIO channel is an open drain which can sink up to 50 mA for direct drive applications when used as an output Figure 3 shows an example of a typical DIO connection The figure represents connections for one channel The other seven channels are connected in the same manner Figure 3 Digital output connection example External pull up pull down...

Page 16: ...o turn the board on and off Use the PAIRING_SW and PAIRING_SW with a momentary switch to perform the same power and pairing functionality as the onboard button refer to Power pairing button on page 12 LED control Use the LED1 and LED1 pins to connect an external power LED The series resistor is already on the BTH 1208LS OEM only a LED is required Use the LED2 and LED2 pins to connect an external s...

Page 17: ... up to 50 mA that is supplied by the power source of the device You can use this terminal to supply power to external devices or circuitry Caution The V0 pin is an output Do not connect to an external power supply or you may damage the BTH 1208LS OEM and possibly the computer For more information about signal connections For more information about analog and digital signal connections refer to the...

Page 18: ...V G 1 10 V G 2 5 V G 4 4 V G 5 2 5 V G 8 2 0 V G 10 1 25 V G 16 1 0 V G 20 Software selectable Throughput Note 2 Software paced 10 S s typ system dependent Bluetooth 250 S s typ system dependent USB Continuous scan 0 014 S s to 1024 S s Bluetooth 0 014 S s to 47 kS s USB BURSTIO 0 014 S s to 47 kS s to 12K 12 288 sample FIFO Transfer rate to host is limited to 1024 S s Bluetooth Channel gain queue...

Page 19: ...uracy LSB 20 V 5 1 10 V 6 1 5 V 8 1 4 V 9 1 2 5 V 12 1 2 V 14 1 1 25 V 20 1 1 V 24 1 Table 3 Accuracy single ended mode Range Accuracy LSB 10 V 4 0 Table 4 Accuracy components differential mode all values are Range of Reading Gain Error at FS mV Offset mV Accuracy at FS mV 20 V 0 2 40 9 766 49 766 10 V 0 2 20 9 766 29 766 5 V 0 2 10 9 766 19 766 4 V 0 2 8 9 766 17 766 2 5 V 0 2 5 9 766 14 766 2 V ...

Page 20: ...vidually configured to initialize to 000h or to have user configurable values written to the outputs when the Bluetooth host is connected or disconnected Output current drive Each D A OUT 5 mA source capability Slew rate 0 75 V µs typ Table 9 Analog output accuracy all values are accuracy tested at no load Range Accuracy LSB 0 V to 2 5 V 8 0 typ 73 0 max Table 10 Analog output accuracy components ...

Page 21: ...kage current Note 7 1 0 µA typ Sink current capability 50 mA max continuous per pin Transistor on resistance 0 7 Ω max Power on and reset state USB operation All input Bluetooth operation The digital I O can either be all input at power on reset or may be configured to have user configurable patterns written to the DIO when the Bluetooth host is connected or disconnected Note 5 Each transistor sou...

Page 22: ... 2 V max Input high voltage limit 5 5 V absolute max Input low voltage threshold 0 98 V typ 0 6 V min 1 5 V max Input low voltage limit 0 5 V absolute min 0 V recommended min External clock input Table 13 External clock input specifications Parameter Specification Terminal name AICKI Terminal type Input Input clock rate 50 kHz max Clock pulse width 1 µs min Input type Schmitt trigger 47 kΩ pull do...

Page 23: ...e width 500 ns min 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 0 6 V min 1 5 V max Input low voltage limit 0 5 V absolute min 0 V recommended min Memory Table 15 Memory specifications FIFO 12K 12 288 samples Non volatile EEPROM 2 048 bytes 768...

Page 24: ... configurable power off timer that will turn the device off when there is no host connection for the specified amount of time The timer can be disabled or set to a value from 1 255 minutes Bluetooth Table 18 Bluetooth specifications Parameter Specification Device type Note 9 Bluetooth 2 1 Device compatibility Backwards compatible with Bluetooth 2 0 1 2 and 1 1 Bluetooth profile Serial Port Profile...

Page 25: ... 3 LO 16 AOUT1 Analog output 1 Table 24 8 channel single ended mode Pin Signal name Pin description Pin Signal name Pin description 1 CH0 IN Analog input 0 2 AGND Analog ground 3 CH1 IN Analog input 1 4 AGND Analog ground 5 CH2 IN Analog input 2 6 AGND Analog ground 7 CH3 IN Analog input 3 8 AGND Analog ground 9 CH4 IN Analog input 4 10 AGND Analog ground 11 CH5 IN Analog input 5 12 AGND Analog gr...

Page 26: ...ttery center tap 4 GND Ground 5 THERMISTOR 10 kΩ thermistor positive battery temperature sensing 6 THERMISTOR 10 kΩ thermistor negative 7 PWR SW SPST contact 1 power switch 8 PWR SW SPST contact 2 9 PAIRING SW Momentary contact 1 pairing soft power switch 10 PAIRING SW Momentary contact 2 11 LED1 LED1 anode 12 LED1 LED1 cathode 13 LED2 LED2 anode 14 LED2 LED2 cathode 15 Vbus USB 5 V supply chargin...

Page 27: ...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 ...

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