Davtron 850B Bedienungsanleitung

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DAV-INS-001-850B REV 0 10-27-21 DAVTRON, INC.

INSTALLATION MANUAL

MODEL 850B

LED DIGITAL CLOCK

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DAV-INS-001-850B REV 0 10-27-21 DAVTRON, INC.

List of Revisions

Rev.

Description of Changes

Approved By

Approved Date

RELEASED

BFT

10/27/21

Table of Contents

List of Revisions.........................................................................................................................................2

Important information..............................................................................................................................3

1. Features ............................................................................................................................................4

2. Overall Dimensions ........................................................................................................................... 5

3. Electrical............................................................................................................................................6

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DAV-INS-001-850B REV 0 10-27-21 DAVTRON, INC.

Important information

Warranty Policy: Davtron's warranty policy is one year from date of installation on all parts, excluding

batteries.

Technical Support: If you should need technical support, first check out the "Frequently Asked

Questions" tab related to your unit. If you are unable to fix the problem, Davtron has on-site technicians

who can help you step-by-step over the phone. You can call our main line at (866) 369-5588 and ask for

technical support or email [email protected]

Repair Info: Davtron offers 5 day turn-around service on most repairs. We charge a flat labor rate see

support page on-line, plus parts and shipping. If repairs are returned to factory via Federal Express®, we

can sometimes get them out the same day. Davtron doesn't require a RMA #.

Recommend to see our repair form (see support page on-line) and use as template and provide details

to the problem occurring with unit as well as your return address and contact information and ship to

the following:

DAVTRON INC.

ATTN: REPAIRS DEPT

427 HILLCREST WAY

REDWOOD CITY (Emerald Hills ), CA 94062

(650) 369-1188

All Davtron products are designed and manufactured in Redwood City, CA.

Installation of the M850B system is supplemental only; it is not intended as a replacement for or

modification to an existing, approved, or required system. This model is limited to installation in non-

pressurized, Part 23, Class I and II aircraft and is FAA approved under NORSEE policy PS-AIR-21.8-1602.

The M850B system is not a required system and may not be used as a substitution for the certificated

aircraft system. No operational credit may be taken for installation of M850B system.

The M850B uses a small coin cell battery (CR2032) and may require replacement. We suggest to return

the unit for service if the unit does not maintain correct time when the aircraft is not operating.

Testing the display of the M850B, In GMT mode, Hold the SEL button down for three seconds and the

display will indicate 88:88 and activate all five annunciators. See details how to set and operate in the

M850B brochure.

Not for use as a primary M850B (instrument, visual display, etc.) for flight

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DAV-INS-001-850B REV 0 10-27-21 DAVTRON, INC.

1. Features

The M850B 2 ¼” clock Front Mount or Internal Mount option provides supplemental flight

information.

• GMT - (Greenwich Mean Time: 24 hour format.)

• LT - (12 hour or 24 hour format.)

• FT - Flight Time recorded in hours and minutes or

in hours, tenths, and hundreds.

• FT - Flight time alarm with external output.

• ET - Elapsed time with countdown timer with alarm.

• CDT -Count Down Time with alarm

S P E C I F I C A T I O N S

Input Voltage: 14 to 28 Volts (Backlight

5V, 14V, or 28V

Input Current: .2 Amps.

Battery Type: CR2032.

Keep Alive Current: .00004 Amps.

Illuminated buttons and annunciators for

night viewing

Bright sunlight readable LED displays with

automatic display brightness.

Two button control system is natural and

error free. Setting operations are

identical for both alarm and time setting.

Crystal precision time reference, ±2

minutes per year accuracy from

40°C to +85°C.

Weight: 5 ounces MAX.

Warranty: 1 year.

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DAV-INS-001-850B REV 0 10-27-21 DAVTRON, INC.

2. Overall Dimensions

The M850B can be mounted internal or front mount using a standard 2 ¼” panel cutout.

Installation of the following steps:

• Remove / relocate any old instrument

• Locate an appropriate power source / breaker

• Wire power as needed

• Mount the unit to the instrument panel with supplied screws

• Apply power and perform setup (see brochure)

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DAV-INS-001-850B REV 0 10-27-21 DAVTRON, INC.

3. Electrical

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