HEM Data Products: DAWN - Data Acquisition With In-Vehicle Networks
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DAWN Models

DAWN Hardware Models

DAWN works with SAE J2534 compatible devices. Combine HEM Data’s feature-rich software with the best hardware for your application. Some hardware is small and wireless, so you can be outside the vehicle and still acquire data with a laptop. Other DAWN hardware units are designed to serve as loggers to start and stop with the vehicle and work over an extended temperature range. These units do not require a laptop in the vehicle.

DAWN hardware models offer a variety of interfaces to the computer, including Ethernet, USB, and wireless. If you already own a J2534 device, DAWN probably works with it so you only need to buy the DAWN software. Let us recommend the best DAWN hardware model based on your requirements.

Features

AVIT

OBD Mini Logger

MCS1

CarDaq-Plus

Description

Full featured  data logger, & data acquisition with PC

Low cost logger & data acquisition with PC

Multiple protocols; versatile for data acquisition with PC. Low cost.

Multiple protocols; versatile data acquisition with PC

Protocols

ISO 15765-4 (CAN, 11-/29-bit, 250/500 kbps

Yes

Yes

Yes

Yes

SAE J1850 PWM & VPW

Yes

Yes

Yes

Yes

ISO 9141-2

No

Yes

Yes

Yes

ISO 14230-4 (KWP)

No

Yes

Yes

Yes

SAE J1939 CAN

Yes

Yes

Yes

Yes

SAE J1708/1587

Yes

Yes

No

Yes

No. of Protocol Ports (Channels)

2

1

3

2

J2534 Reprogramming
Yes

No

Yes

Yes

Real-time PC data

Yes

Yes

Yes

Yes

Connections to PC

Ethernet

USB

USB

Ethernet & USB

Wireless (Wi-Fi) or equivalent

Yes

Yes

N/A

Yes

Environment

Size (inches)

1.25H x

9.5Dx5.2″W

OBD J1962 connector

1.9W x1.0Hx1.4D

1.25Hx3.25W x5.25L

1.25Hx7.5Dx5.25″W

Supply Current:

300mA @ 12VDC

30mA @ 12VDC

120mA @ 12VDC

140mA @ 12VDC

Operating Temperature C

-40 to +85

-40 to +70

0 to +70

0 to +70

Operating
voltage VDC
7 – 36

6 to 40

6 to 20

7-26

Stand-alone Logger

Yes

Yes

No

No

Stores Engr. Data

Yes

Yes

No

Yes

Store Messages

Yes

Yes

No

Yes

On-board Storage

< 8GB internal CF card

Micro SD card 2GB

None

One internal and one external

Auto Start-up

Yes

Yes

No

No

LEDs for status

4 LEDs

1 LED

1 LED

6 LEDs

Operating  system

Linux

Proprietary

Proprietary

Linux

GPS (NMEA 0183)

Yes

Option

Via CAN

Yes

Cellular modem

EVDO, GPRS options

GPRS Option

No

No

web server and a file server
Yes

No

No

Yes

FTP Server

Yes

No

No

Yes

Processor
200MHz ARM processor, 256MB RAM onboard

80 MHz, 32 bit, 32KB512KB Flash

24 MHz, 16-bit

200MHz ARM processor

Wake-up Input

5-40V

Yes

No

No

Low Power Sleep Mode

100mA, 10 sec response

30 mA Response < 1 sec

No

No

Analog Inputs

Temperature Signal Conditioning

No

Yes

Yes

Yes, option

Analog channels

16 SE

SE option

6 (incl. VBAT) SE

6 SE

Resolution

12 bit

16 bits, 100 Hz

12 bit

12 bit

Voltage Range

+ 5V

0-36V,0-5V,0-15 ma

0-20V

0-27V

Cabin Temperature Sensor

No

Yes

No

No

2-axis MEMS Accelerometer
No

Yes

No

No

2.4 GHz Radio
No

Yes

No

No

Warranty

1 year

1 Year

1 year

1 year