DAVTRON M800 Digital Clock Chronometer

Davtron M800 (M800 14V) Digital Clock

General Description

Davtron's various clocks and multi–functional chronometers are designed to work under the most stringent operating conditions. All of Davtron's new clocks are a two button design that make the pilot's job easier. These clocks display universal time, local time, and elasped time. The advanced clocks add a flight time channel to use for fuel timing. There are two different types of displays available, liquid cyrstal or incandecent; both are readable in high sunlight situations.

Features

Installation Eligibility

Diamond Aircraft Model DA20–A1. Beech Models 35, A35, B35, C35, D35, E35, F35, G35, H35, J35, K35, M35, N35, 35–33, and 35–A33

Operation

The SEL button selects what is to be displayed on the four digit window and the CTL button controls what is being displayed. Pressing select sequentially selects GMT, Local Time, Elapsed Time and back to GMT. The control button starts and resets Elapsed Time when momentarily pushed. Normal operation of the M800 cannot accidentally reset time.

Setting GMT

Select GMT for display in the four digit window with the SEL button. Simultaneously press both the select and control buttons to enter the set mode. The tens of hours digit will start flashing. The control button has full control of the flashing digitand each button push inccrements the digit. Once the tens of hours is set the select button selects the next digit to be set. After the last digit has been selected and set with the control button, a final push of the select button exits the mode. The lighted annunciator will resume its normal flashing, indicating the GMT clock is running.

Setting LT

Select Local Time, LT, using the SEL button. Simultaneously push the SEL and CTL buttons to enter set mode. The tens of hours digit will start flashing. The set operation is the same as for GMT, except that minutes are already synchronized with the GMT clock and cannot be set in Local Time.

Test Mode

Hold the SEL button down for three seconds and the display will indicate 88:88 and activate all three annunciators.

Elapsed Time Count Up

Select ET for display. Pressing the CTL button will start ET counting. Elapsed time counts up to 59 minutes, 59 seconds, and then switches to hours and minutes. It continues counting up to 99 hours and 59 minutes. Pressing the CTR button again resets ET to zero.

Elapsed Time Count Down

Select ET for display and enter set mode by pressing both buttons. The countdown timer can now be set. Entering the time is identical to GMT time setting. When the time is entered and the last digit is no longer flashing the clock is ready to start the countdown. Momentarily pressing the CTL button starts the countdown. When the count reaches zero the displays flash and the external alarm is activated. Pressing either SEL or CTL will deactivate the alarm. ET continues counting up.

Davtron M800 Digital Clock price varies depending on selection
Use above dropdown box for selection and final price.

Documents

• Davitron M800 Brochure 

• Davitron M800 Electrical Installation 

• Davitron M800 Overall Dimensions 

• AA Backup Battery Performance 

Technical Data

Field Option Changes

When changes are made the clock must be grounded to the soldering iron or warranty may be void.

Local Time:

LT may be switched from 12 to 24 hour format by removing the case and jumpering 24.

Keep Alive Input:

Keep Alive Input: 12V to 30V
Alarm Output: Open collector sink 25 MA.

About Davtron

Davtron's design and manufacturing of avionics instruments began in the late 1960s when digital technology was just beginning. Dave Torresdal, a young pilot in Redwood City, California had an idea for a better way to tune an ADF indicator. He designed, engineered, and flight tested a digital indicator in his 1958 Commanche, and soon other local pilots were clamoring to buy one. Dave's second product was the 811B digital clock which has sold over 40,000 units worldwide and is still in production today.