Honeywell MKXXII installation manual Pcmcia / Smartcable Port, GSE Present Discrete Input

Honeywell

MK XXII EGPWS Installation Manual

E 4.2.18.2 PCMCIA / SMARTCABLE PORT

One port is provided which meets the Motorola SPI characteristics. The PCMCIA / SmartCable interface allows for both the uploading, and downloading of internal MK IV, VI, VIII and XXII EGPWS information. Using this interface system, software and databases can be updated. Control of the upload/download process is accomplished by insertion of the PCMCIA card / SmartCable to the MK IV, VI, VIII and XXII EGPWS front panel test connector. LEDs are provided on the SmartCable for PCMCIA interface operation. The PCMCIA / SmartCable is not intended as an on-line/in-flight storage medium and must be removed after completion of the upload/download operation.

Electrical Characteristics	Refer to the Motorola SPI specification
Data definition	Refer to the Motorola SPI specification
Maximum Recommended Cable Length	2 meters
Pin Assignment (Signal Mnemonic):
Clock	J3-7	(SPICLK)
Master Data Out	J3-9	(SPIMOSI)
Master Data In	J3-8	(SPIMISO)
SmartCable Select	J3-10	(SPISEL_SC#)
SmartCable +5VDC	J3-6	(SC_PWR)
SmartCable +5VDC Return	J3-1	(GND)
PCMCIA Card Present	J3-2	(CARD_PRES#)
SmartCable Ground	J3-12, -13, -14	(GND)

NOTE: SmartCable +5VDC Return is common with RS-232 Maintenance Port common.

E 4.2.18.3 GSE PRESENT DISCRETE INPUT

A discrete input for test and Ground Support Equipment is provided. Grounding this pin indicates to the EGPWS that test or Ground Support Equipment is connected to the system.

Active Threshold Voltage (Logic True)	< 0.8 VDC
Inactive Threshold Voltage (Logic False)	> 2.0 VDC
Input Impedance	> 20 KΩ
Maximum Fault Current	< 500 ∝Amps
Pin Assignment (Signal Mnemonic):	J3-11	(GSE_PRES#)

E 4.2.19 FRONT PANEL STATUS INDICATORS

The MK XXII EGPWC front panel provides three LEDs for indicating system and LRU status. A yellow LED labeled “EXTERNAL FAULT” is activated when a signal fault external to the MK XXII EGPWS is detected. A green LED labeled “COMPUTER OK” is activated when the MK XXII EGPWS itself is okay. A red LED labeled “COMPUTER FAIL” is activated when the MK XXII EGPWS has detected an internal computer fault.

Refer to Product Specifications 965-1590-601 for a detailed discussion of status indications, recommended maintenance actions, Self-Test activation and response.

CAGE CODE: 97896 SCALE: NONE SIZE: A DWG NO: 060-4314-225 REV: C SHEET 179