DBX1 Barograph V3.80 user's Manual
DBX1 Barograph Wiring Harness for Marine Craft


What is NIST?
NIST stands for the National Institute of Standards and Technology. They are the
US government agency that sets standards and guidelines for calibrations and measurements.

Does the unit come with a NIST traceable calibration report?
Yes, each unit is tested against our NIST standard a G.E. Druck DPI 740 pressure transducer.
The NIST testing range is from 26.00 - 31.00 inhg, 860 - 1060mb/hPa
and 660 - 787mmhg. Unit accuracy is for the prescribed test range.
Each unit is fully calibrated and comes with a NIST traceable calibration report.

Are the high and low records based on hourly records?
No, the high and low records are based on 5 minute samples over 120 hour period.
A total of 7200 samples for a 5 day period.

Are high and low records considered when taking a realtime reading?
Yes, everytime you take a realtime reading it is considered a sample that
will be used for comparison in the 1 and 5 day data.

Will the DBX1 Barograph retain its settings when changing the batteries?
Yes, If the DBX1 Barograph is plugged in and you remove the batteries the unit will retain its

Can I turn the DBX1 Barograph backlight on permanently?
Yes, but the backlight uses a considerable amount of power, so the DBX1 Barograph
must be plugged in when used in this manner.

How long will the DBX1 Barograph batteries last?
That depends, if the DBX1 Barograph is plugged in or is hardwired they will last for over a year.
If the DBX1 Barograph is on battery power alone they will last for about a month. This does not
account for using the DBX1 Barograph backlight.

What is the maximum DC input voltage of the DBX1 Barograph?
The DBX1 Barograph can handle a maximum of 15.0 volts. It was design to work with marine power systems.

Is the DBX1 Barograph graph self adjusting?
Yes, the DBX1 Barograph graph will self adjust so that the current record and the largest previous
record can fit on the screen. The graph will center the current (right most record) when it can.

If recharable batteries are used will the DBX1 Barograph charge them?
No, The backup batteries will not be recharged by the DBX1 Barograph.
You can however recharge the batteries separately.

Can the DBX1 Barograph be wall mounted?
Yes, there is a DBX1 Barograph standard and wall mount version. Plus, you can buy mounting brackets anytime.
Please contact sales if you would like to purchase this item.


If you need service on your Barograph or have technical questions regarding the DBX1 Barograph
please email us and we will respond quickly.


      Contact:    sales@digitalbarograph.com         Main Barograph Site:    www.digitalbarograph.com          Copyright © 2009, ASI LLC