Mid-Continent Instrument MD93 Installation Manual And Operating Instructions

Installation Manual and Operating Instructions

MD93 Series

Digital Clock/USB Charger

Mid-Continent Instruments and Avionics

Mid-Continent Instrument Co., Inc.
dba Mid-Continent Instruments and Avionics
9400 E. 34th Street N.
Wichita, KS 67 22 6 USA Manual Number 9018205
PH [phone] FX (316) 63 0-0723 Revision A, July 15, 2014

FOREWORD

This manual provides information intended for use by persons who, in accordance with current
regulatory requirements, are qualified to install this equipment. If further information is required,
please contact:

Mid-Continent Instruments and Avionics

Attn: Customer Service Dept.

9400 E. 34th Str eet N.

Wichita, KS 67 22 6 U SA

PH [phone]
FX (316) 63 0-0723

www.mcico.com

We welcome your comments concerning this manual. Although every effort has been made to
keep it free of errors, some may occur. When reporting a specific problem, please describe it
briefly and include the manual part number, the paragraph/figure/table reference and the page
number. Send your comm e nts to:

Mid-Continent Instruments and Avionics

Attn: Technical Pu bl i c ati o ns

9400 E. 34th Str eet N.

Wichita, KS 67 22 6 U SA

PH [phone]
FX (316) 63 0-0723

[e-mail]

All products produced by Mid-Continent Instrument Co., Inc., including those identified as Mid­Continent Instruments and Avionics or True Blue Power, are designed and manufactured in
Wichita, KS, USA .

© Copyright 2014

Mid-Continent Instrument Co., Inc.

ECO

Revision

Date

Detail

A 07/15/2014

Initial release.

REVISION HISTORY

TABLE OF CONTENTS

SECTION 1 GENERAL DESCRIPTION 6

1.1 INTRODUCTION 6

1.2 PHYSICAL ATT RIBU TES 6

1.3 UNIT ARCHITECTURE 7

1.4 TECHNICAL SPECIFICATIONS 7

1.4.1 ELECTRICAL ATTRIBUTES 7

1.4.2 PHYSICAL ATTR IBUT ES 7

SECTION 2 PRE-INSTALLATION 8

2.1 COOLING 8

2.2 EQUIPMENT LOCATION 8

2.3 ROUTING OF CABLES 8

SECTION 3 INSTALLATION 9

3.1 GENERAL 9

3.2 PRE-INSTALLATION INSPECTION 9

3.3 PARTS 9

3.3.1 INCLUDED PARTS 9

3.3.2 OPTIONAL AVAILABLE PARTS 9

3.3.3 INSTALLER SUPPLIED PARTS 9

3.4 CABLE HARNESS 10

3.4.1 WIRE GAUGE SELECTION 10

3.4.2 PIN ASSIGNMENT INFORMATION 10

3.4.3 HARNESS VERIF ICATION 10

3.5 INSTALLATION 11

3.5.1 DIMMING FUNCTIONS 11

SECTION 4 USB CHARGER OPERATION 12

4.1 DESCRIPTION 12

4.2 OPERATIONAL MODES 12

4.3 PROTECTIVE FEATURES 12

4.3.1 SHORT CIRCUIT PROTECTION 12

4.3.2 OVER-CURRENT PROTECTION 12

4.3.3 LOW INPUT VOLTAGE SHUTDOWN 12

4.3.4 OVER-TEMPERATURE 12

SECTION 5 CLOCK / CHRONOMET ER OPERATION 13

5.1 DESCRIPTION 13

5.2 CONSTRUCTION 13

5.3 OPERATIONAL MODES 13

5.3.1 LOCAL TIME OPERATION / SETTING 14

5.3.2 UNIVERSAL TIME OPERAT ION / SETTING 15

5.3.3 FLIGHT TIMER 16

5.3.4 ELAPSED TIMER 17

5.3.5 DISPLAY TEST MODE 18

SECTION 6 CONFORMANCE 18

6.1 INSTRUCTIONS FOR CONTINUED AIR WORTHINESS 18

SECTION 1 GENERAL DESCRIPT ION

1.1 INTRODUCTION

The MD93 series, part number 6430093-( ) is a digital clock / chr onom eter with a Dedicated Charging
Port (DCP) for USB dev ic es (specifically 2 USB chargi ng ports) f itting into a standard 2 ¼” avionics panel
cutout. Power is drawn from the aircraft main bus to light a white, six digit, and seven segment LED clock.
The clock can display sev er al diff er ent modes: local time, universal time, flight timer and elapsed timer
functions. The MD93 LEDs are day light readable and can be dimmed duri ng r educ ed light conditions by
external voltage stimulus. W hen the external voltage is not present the c lock LED and annunciations are
dimmed by means of an internal phot oc ell. The MD93 clock has an internal batt er y to m aintain clock and
flight timer functions when the aircraft is not in use.

The Dual USB Charging Port i s designed as a DCP (Dedicated Charging P ort) to industry-standard
protocol per the USB Battery Char ging 1.2 Compliance Plan. Early-gener ation or smaller consumer
electronics ty pic ally accept one (1.0) amp during char ging. However, newer electr onic s, such as tablets
and larger devices can accept , and in some cases, require up to 2.1 amps to charge and operat e. As a
high power DCP, the MD93 can provide up to 2.1 amps to charge any USB device, including the higher
demand products. Unlike most dual USB chargers which provi de one ( 1.0) amp on one port and 2.1 amps
on the second port, t he MD93 can prov ide 2.1 amps to both ports simult aneousl y. Wit h feat ur es li k e short
circuit protec tion, over-current protection, low voltage shut-down and temperature monitoring, it can
handle abnormal conditions safely .

1.2 P HY SIC AL AT T R I B UTE S

The cutout i s a single, integrated component cont ained in a metal enclosure, fitting into a standard 2 ¼”
avionics instrument panel cutout. A 4-pin connector on the rear of t he unit is used for power input,
external dimmi ng c ontrol and flight timer operation. The front of the unit houses dual, USB Standard-A
receptacles. Thr ee butt ons on the front of the unit are used for changing modes of operation between
clocks and timers as well as setting/resetti ng cl ocks and timer s. Refer to Figure 1 below for unit
dimensions.

Figure 1

MD93 Outline Drawing

Mid-Continent Instrum ents and Avionics
Revision A, July 10, 2014 Manual Number 9018205

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