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Midcontinent CH93 Series - User Manual

Midcontinent CH93 Series
32 pages
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ManualNumber
9018205
RevisionF
April1,2021
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Summary

SECTION 1 GENERAL DESCRIPTION

1.1 INTRODUCTION

Overview of the CH93 series functions, features, and capabilities.

1.2 PHYSICAL ATTRIBUTES

Details the unit's physical size, enclosure, controls, and connectors.

1.3 MODEL AND PART NUMBER IDENTIFICATION

Lists CH93 models, part numbers, types, and USB port configurations.

1.4 TECHNICAL SPECIFICATIONS

Encompasses electrical attributes, power ratings, efficiency, and accuracy.

SECTION 2 PRE-INSTALLATION CONSIDERATIONS

2.1 COOLING

Addresses heat generation and operational cooling requirements for the unit.

2.2 EQUIPMENT LOCATION

Provides guidance on selecting an appropriate installation location.

2.3 ROUTING OF CABLES

Offers recommendations for safe and proper cable routing practices.

2.4 LIMITATIONS

Outlines limitations concerning TSO approval and battery specifications.

2.5 MODIFICATION

Explains the meaning of modification numbers on the unit's nameplate.

SECTION 3 INSTALLATION

3.1 GENERAL

Introduces the installation section, covering diagrams and dimensions.

3.2 PRE-INSTALLATION INSPECTION

Describes the necessary visual inspection before starting installation.

3.3 PARTS

Lists all included, available, and installer-supplied parts for the unit.

3.4 CABLE HARNESS

Covers cable harness construction, wire gauge, and routing precautions.

3.4.1 Wire Gauge Selection

Recommends specific wire gauges and types for aircraft harness.

3.4.2 Pin Assignment Information

Provides detailed pinout definitions for Type 1 and Type 2 unit connectors.

3.4.3 Harness Verification

Details the process for verifying the cable harness before connection.

3.5 INSTALLATION

Explains the rear panel mount installation procedure and screw length.

SECTION 4 OPERATION

4.1 UNIT ARCHITECTURE

Describes the CH93's core components, user interface, and display elements.

4.2 CLOCK AND USB PROTECTIVE FEATURES

Details built-in protections for the unit and connected devices.

4.3 USB OPERATION

Explains the functionality and standards for USB charging ports.

4.4 DIMMING FUNCTIONS

Covers automatic and manual display brightness control methods.

4.4.1 Display Dimming Adjustment (Type 1 units)

Details dimming adjustment for Type 1 units using rear potentiometers.

4.4.2 Display Dimming Adjustment (Type 2 units)

Explains dimming adjustment for Type 2 units via front control buttons.

4.5 OPERATIONAL MODES

Lists and briefly describes the six operational modes of the CH93.

4.5.1 Local Time Mode

Guides on setting and configuring the local time display preferences.

4.5.2 Universal Time Mode

Explains how to set and configure the universal time (UTC) display.

4.5.3 Flight Timer Mode

Describes the operation of resettable and non-resettable flight timers.

4.5.4 Timer Mode

Covers the functionality of elapsed and countdown timers.

4.5.5 Voltage

Details how to view the aircraft bus voltage on Type 2 units.

4.5.6 Temperature Mode

Explains how to display and configure temperature readings from probes.

4.5.6.1 Temperature Probe Configuration

Guides on configuring the first temperature probe for the unit.

Temperature Sensor Configuration (First Temperature Probe)

Provides step-by-step instructions for configuring the first temperature sensor.

Temperature Sensor Configuration (Second Temperature Probe)

Guides on configuring the second temperature probe, if installed.

4.5.6.2 Uninstalling Temperature Probes

Instructions for removing and un-configuring installed temperature probes.

4.5.7 Display Test Mode

Describes how to perform a display test to activate all segments.

4.6 TEMPERATURE PROBE INSTALLATION

4.6.1 RTD Probes

Details the installation procedure for RTD-style temperature probes.

4.6.1.1 OAT RTD Probe

Specific instructions for installing the OAT RTD probe (MCIA p/n B-10-1).

4.6.1.2 Interior RTD Temperature Probe

Specific instructions for installing the interior RTD probe (MCIA p/n B-11-1).

4.6.2 Transducer Probes

Details the installation procedure for transducer-style temperature probes.

4.6.2.1 OAT Transducer Probes

Lists compatible OAT transducer probes and their connection requirements.

4.6.2.2 Interior Transducer Probe

Specific instructions for installing the interior transducer probe (MCIA p/n B-11-2).

SECTION 5 CONFORMANCE

5.1 INSTRUCTIONS FOR CONTINUED AIRWORTHINESS

Covers ongoing airworthiness, maintenance, and battery replacement.

5.2 ENVIRONMENTAL QUALIFICATION STATEMENT

Summarizes the environmental test specifications and categories met by the unit.

Midcontinent CH93 Series Specifications

General IconGeneral
BrandMidcontinent
ModelCH93 Series
CategoryClock
LanguageEnglish

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