(d)
PCMCIA interface The standard Type II PCMCIA interface provided at the front panel allows for both the uploading and downloading of internal Enhanced GPWC information. Control of the upload/download process is accomplished by insertion of the PCMCIA card into the front panel access. Four LEDs are provided for PCMCIA interface operation.
R 1EFF : 001-049, 051-099, 101-104, 106-149, 1 34-48-00Page 65 1151-199, 201-299, 301-399, 401-499, 1Config-1 Aug 01/05 1 1 1CES 1 The PCMCIA card does not remain installed during normal Enhanced GPWC operation, and is not intended as an on-line/inflight storage medium.
(e) Front connector A 15-pin (double density, D-Sub) test connector is located on the front panel, which provides for connection to either a CRT terminal or a PC. This connector provides the following interfaces:
1 Three-wire serial interface, compatible with RS232
_ This port can be used to access internal data from the Enhanced GPWC for both bench simulation and aircraft testing. Unit configuration and flight history can also be accessed. This port can also be used to upload software and data bases.
2 ARINC 429/422/423 data loader interface
_ This port can be used to upload software and data bases. System power is provided on two of the pins for data loader use. The Enhanced GPWC front connector pins are listed in the table below (N/U means Not Used):
---------------------------------------------------------|LRU Con |Pin| Description | ---------------------------------------------------------
| FRONT | 8 | 429 INPUT 20(A)/422 INPUT 2(A) |
| FRONT |13 | 429 INPUT 20(B)/422 INPUT 2(B) |
| FRONT | 9 | 429 OUTPUT 5(A)/422 OUTPUT 2(A) |
| FRONT |14 | 429 OUTPUT 5(B)/422 OUTPUT 2(B) |
| FRONT | 2 | RESERVED FOR BOOT CODE LOAD N/U |
| FRONT | 6 | PCMCIA BOOT ENABLE N/U |
| FRONT | 11| RS422 SELECT N/U |
| FRONT | 1| Ground |
| FRONT | 10| POWER PIN ISOLATOR |
| FRONT | 15| 115 VAC-C (OR 28 VDC-) |
| FRONT | 5| 115 VAC-H (OR 28 VDC+) |
| FRONT | 3| RS232 RECEIVE |
| FRONT | 4| RS232 TRANSMIT |
| FRONT | 7| Spare |
| FRONT | 12| Spare |
|FRT JACK| 1 | 600 OHM AUDIO OUTPUT (C) |
|FRT JACK| 2 | 600 OHM AUDIO OUTPUT (H) |
---------------------------------------------------------
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**ON A/C ALL
(2) Internal Description (Ref. Fig. 008)
(a)
The hardware consists of three main circuit card assemblies:
-
the controller card,
-
the accessory card,
-
the analog acquisition card.
(b)
The Enhanced GPWC contains the following five processors:
1_ The controller card contains the main processor
(microprocessor 486DX4), the Digital Information Transfer
System (DITS) handler microcontroller and the image generator
DSP.
2_ The accessory card contains the power supply and the voice
generator DSP.
3_ The analog acquisition card contains the analog acquisition
microcontroller.
-main processor (486DX4) that runs the Enhanced GPWC Application software and the Boot Loader Software,
-DITS handler microcontroller that runs the DITS Handler software,
-image generator DPS that runs the image generator software, which is a part of the Application software,
-voice generator DSP that runs the voice generator software, which is part of the Application software,
-analog acquisition microcontroller that runs the Analog Acquisition software.
1EFF : ALL 1 34-48-00Page 67 1 1 Config-1 Feb 01/05R 1 1 1CES 1
Enhanced GPWC - Block Diagram
Figure 008
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R
R **ON A/C 106-149, 215-299, 301-399, 401-499,
B. Pushbutton Switches (Ref. Fig. 003)
(1)
GPWS/LDG FLAP 3 pushbutton switch 13WZ To avoid nuisance warnings during approach, the Enhanced GPWC needs to know at which flap position the crew intends to land. This pushbutton switch (item 5), when pressed (in) (white ON legend on), indicates to the Enhanced GPWC that the pilot intends to land in flap 3 position. When released (out), the pushbutton switch indicates to the Enhanced GPWC that the pilot intends to land in flap FULL position. The GPWS FLAP message is permanently displayed in green on the MEMO of the ECAM display unit if no warning is in progress.
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