Midcontinent CH93 Series Installation Manual And Operating Instructions
  1. Manuals
  2. Brands
  3. Midcontinent Manuals
  4. Clock
  5. CH93 Series
  6. Installation manual and operating instructions

Midcontinent CH93 Series Installation Manual And Operating Instructions

Hide thumbs
Table of Contents

Advertisement

Quick Links

Manual Number 
9018205 
Revision F 
April 1, 2021 

Advertisement

Table of Contents
loading
Need help?

Need help?

Do you have a question about the CH93 Series and is the answer not in the manual?

Questions and answers

Related Manuals for Midcontinent CH93 Series

Summary of Contents for Midcontinent CH93 Series

  • Page 1 Manual Number  9018205  Revision F  April 1, 2021 ...
  • Page 2 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 Street N. Wichita, KS 67226 USA PH (316) 630-0101 FX (316) 630-0723...

  • Page 3: Table Of Contents

    TABLE OF CONTENTS SECTION 1  GENERAL DESCRIPTION ..................4  1.1  INTRODUCTION ........................4  1.2  PHYSICAL ATTRIBUTES ......................4  1.3  MODEL AND PART NUMBER IDENTIFICATION ..............6  1.4  TECHNICAL SPECIFICATIONS ....................6  SECTION 2  PRE-INSTALLATION CONSIDERATIONS ............... 8  2.1  COOLING ..........................8  2.2 ...
  • Page 4 REVISION HISTORY Date Detail Approved 07/15/2014 Initial release. Revised EQF, added DO-311A Compliance Qualification 09/15/2014 Form and provided additional limitation details (sec 2.5) 03/12/2015 Added Environmental Qualification Statement to Section 6. 03/21/2016 Added Qualifications to Section 1.3. Updates for MOD 1 function enhancements. Revised 10/30/2018 elapsed timer to include countdown timer function.

  • Page 5: Section 1  General Description

    GENERAL DESCRIPTION INTRODUCTION The CH93 series, part numbers 6420093-( ), is a multi-function digital clock / chronometer / voltmeter / temperature unit with multiple options for USB Charging Ports. The unit fits into a standard, rear-mounted, 2-¼” avionics panel cutout. Power is drawn from the aircraft main bus to light a white, six digit, seven segment LED clock.
  • Page 6 1.15 2.39 Pin 1 0.12 1.86 Photocell dim adjust 6 digit display Aircraft window dim adjust Ø2.25 MAX 2.39 Push button 1.86 operation (3x) Dual USB 4X 6-32 UNC Charging Ports Figure 1.1 CH93 Type 1 Drawing (-2 Unit) 2.39 1.86 2.39 1.86...

  • Page 7: Model And Part Number Identification

    MODEL AND PART NUMBER IDENTIFICATION Chronos Models and Type Part Number: Model: Type: USB Charging Ports: 6420093-0 CH93 Type 2 None 6420093-2 CH93HP Type 1 Dual Type A 6420093-3 CH93HP Type 2 Single Type A 6420093-4 CH93HP Type 2 Dual Type A CH93MAX Type 2 Type A / Type C...
  • Page 8 Physical Attributes Weight: 5.0 ounces (142 g) Dimensions (not including connector) Type 1 2.39 inches wide x 2.39 inches high x 1.15 inches deep (61 mm wide x 61 mm high x 29 mm deep) Type 2 2.39 inches wide x 2.39 inches high x 1.22 inches deep (61 mm wide x 61 mm high x 31 mm deep) Charging Ports Type Not Applicable...

  • Page 9: Section 2  Pre-Installation Considerations

    SECTION 2 PRE-INSTALLATION CONSIDERATIONS COOLING The CH93 will become warm when in use; however no external cooling is required. This is normal and within operational parameters. No special mounting considerations are required, although mounting to a metal surface can help dissipate any heat generated and extend the life of the product.

  • Page 10: Modification

    MODIFICATION This product has a nameplate that identifies the manufacturer, part number, description, certification(s) and technical specifications of the unit. It also includes the “MOD” or modification number representing notable changes in the hardware design of the unit. Modification (MOD) 0 is the initial release of the product and is identified on the nameplate by the lack of marking on the MOD numbers 1 through 9 (i.e.

  • Page 11: Section 3  Installation

    SECTION 3 INSTALLATION GENERAL This section contains interconnect diagrams, mounting dimensions and other information pertaining to the installation of the CH93 Digital Clock / Dual USB Charging Port. After installation of cabling and before installation of the equipment, ensure that power and ground are applied to the proper pins specified in Section 3.4.2, Pin Assignment Information.

  • Page 12: Cable Harness

    CABLE HARNESS Construct the cable harness following the instructions outlined below and per Tables 3.1, 3.2 (Type 1 units) and 3.3 (Type 2 units). Refer to Section 2: Pre-Installation Considerations for routing precautions. Wire Gauge Selection Use of PTFE, ETFE, TFE, Teflon or Tefzel insulated wire is recommended for aircraft use. The wire harness should utilize 20-24 AWG stranded wire.
  • Page 13 Replaceable Coin Cell (BR2032) Cover Signal Number Ground Power Input (DC) Flight Timer Input RTD Temp A Alarm Out Current Temp Return Pin 1 Current Temp Power Aircraft Lighting Bus (DC) RTD Temp B Table 3.3 Figure 3.2 Power Input Connector Pinout (Type 2) CH93 Rear View (Type 2) Harness Verification WARNING...

  • Page 14: Installation

    INSTALLATION The CH93 is rear mounted using a standard 2 ¼” panel cutout. Prepare the panel cutout as shown in Figure 3.2 below. For Type 1 units, the display dimming should be adjusted according to Section 4.4 prior to installing the unit. Mount the CH93 with #6-32 flat head screws (provided with installation kit).

  • Page 15: Section 4  Operation

    SECTION 4 OPERATION UNIT ARCHITECTURE The CH93 is comprised of two functional building blocks, a USB charger and digital clock. The DC input voltage is regulated over its specified range using a DC-DC converter to power the USB charger and all clock functions. A charging port controller manages power output for the USB charging ports.

  • Page 16: Usb Operation

    USB OPERATION For units with USB Charging Ports, there are single and dual Type A versions available as well as the CH93MAX dual Type A/Type C version. The Type A USB Charging Ports convert the specified DC input voltage range to a 5 VDC output. Type C USB-PD (Power Delivery) Charging Ports convert the specified DC input voltage range specified to either 5, 9, 15, or 20 VDC.
  • Page 17 Display Dimming Adjustment (Type 2 units) For Type 2 units, the brightness range of the clock can be adjusted before or after installation using the control buttons on the front of the unit. With the unit in either LOCAL or UTC mode, simply pressing the –...

  • Page 18: Operational Modes

    OPERATIONAL MODES The CH93 has six modes of operation representing up to nine separate functions. Each mode, when applicable, is indicated by a backlit annunciation on the display. See table 4.1 for details. Mode Annunciation Functions Local Time (none) Display and set local time Universal Time Display and set UTC time Flight Timer...
  • Page 19 Local Time Mode When power is applied to the CH93, the system defaults to Local Time mode (in this mode, there is no mode indication/annunciation; refer to Figure 4.5). Pressing and holding the MODE button will enter the configuration menu. The local time can be configured to display preferences for 12- or 24-hour format and to either display or hide seconds (displaying or hiding seconds setting applies to both local and UTC time).
  • Page 20 Universal Time Mode When in Local Time mode, pressing the Mode button once changes the unit to Universal Time mode and the UTC annunciation will be backlit (refer to Figure 4.7). Pressing and holding the MODE button will enter the configuration menu. UTC time is always displayed in 24-hour format and seconds can be configured to be displayed or hidden (displaying or hiding seconds setting applies to both local and UTC time).
  • Page 21 Flight Timer Mode When in UTC mode, pressing the Mode button once changes the unit to Flight Timer mode and the FLIGHT annunciation will be backlit (refer to Figure 4.9). To activate the flight timer, a ground or aircraft power signal must be supplied to the Flight Timer Enable Pin (see Tables 3.3 and 3.4).
  • Page 22 Timer Mode When in Flight Timer mode, pressing the Mode button once changes the unit to Timer mode and the TIMER annunciation will be backlit (refer to Figure 4.11). The timer function can be operated as either an elapsed timer (stopwatch) or countdown timer, where a specific countdown time can be set.
  • Page 23 Figure 4.12 Elapsed/Countdown Timer Operation Voltage When in Timer mode, pressing the Mode button once changes the unit to Voltage mode and the VOLTS annunciation will be backlit (refer to Figure 4.13). Voltage mode is only available in CH93 Type 2 units. When in Voltage mode, the bus voltage (Volts DC (Direct Current)) is displayed to the nearest 1/10 of a volt and preceded by the “dc”...
  • Page 24 Temperature Mode When in Voltage mode, pressing the Mode button once changes the unit to Temperature mode and the OAT (Outside Air Temperature) annunciation will be backlit (refer to Figure 4.17). Temperature mode is only available in CH93 Type 2 units and requires the use of one or two temperature probes (sold separately;...
  • Page 25 Figure 4.19 Temperature Mode Operation 4.5.6.1 Temperature Probe Configuration The CH93 supports two different types of temperature probes; RTD and current sense devices. If only one of the above probes is connected to the CH93, the temperature display will initially appear like Figure 4.17. If two probes are connected (must be one of each type), the unit can be configured to identify one probe as Outside Air Temperature and the other as interior (cockpit/cabin) temperature.
  • Page 26 Figure 4.20 Temperature Sensor Configuration (First Temperature Probe) Manual Number 9018205 Revision F, April 1, 2021...
  • Page 27 Figure 4.21 Temperature Sensor Configuration (Second Temperature Probe) Manual Number 9018205 Revision F, April 1, 2021...
  • Page 28 4.5.6.2 Uninstalling Temperature Probes To uninstall (un-configure) a temperature probe(s), follow instructions per Figure 4.22. Figure 4.22 Temperature Sensor Configuration (Uninstalling Temperature Probes) Display Test Mode To test the CH93 display, press and hold both +/- buttons for 2 seconds. After 2 seconds all display segments and annunciators will be activated until the + and - buttons are released.

  • Page 29: Temperature Probe Installation

    TEMPERATURE PROBE INSTALLATION The CH93 (Type 2) supports two types of temperature probes: an RTD (Resistance Temperature Detector; 500 Ω) and a Temperature Transducer (current sense device; AD590). This section describes compatible probes available for installation for the CH93 Type 2 unit. Either may be used (if only one) or one of each type.
  • Page 30 Transducer Probes To install any of the Transducer-style probes for OAT or interior temperature, connect pins 6 and 7 (polarity required) to the mating connector of the CH93 per the instructions below. 4.6.2.1 OAT Transducer Probes The CH93 is compatible with the following OAT Transducer Probes: (not available through MCIA) ...

  • Page 31: Section 5  Conformance

    SECTION 5 CONFORMANCE INSTRUCTIONS FOR CONTINUED AIRWORTHINESS No periodic scheduled maintenance or calibration is necessary for continued airworthiness of the CH93 Digital Clock / Dual USB Charging Port. If the unit fails to perform to specifications, the unit must be removed and serviced by Mid- Continent Instruments and Avionics or their authorized designee.

  • Page 32: Environmental Qualification Statement

    ENVIRONMENTAL QUALIFICATION STATEMENT MODEL NUMBER: CH93 Series PART NUMBER: 6420093-( ) DESCRIPTION: Digital Clock/USB Charging Port CERTIFICATION: FAA TSO-C71 MANUFACTURER: Mid-Continent Instrument Co., Inc. ADDRESS: 9400 E. 34 St. North, Wichita, KS 67226, USA. SPECIFICATION: Test Specification (TS) 509 Test Data Sheet (TDS) 509 and 093...

This manual is also suitable for:

Ch93Ch93pCh93max6420093-06420093-26420093-3 ... Show all

Table of Contents

Save PDF