GNC 400 COMM TRANSCEIVER ALIGNMENT PROCEDURE
P/N 005-00051-55 REV. T
Page 3
1. GENERAL
The alignment procedures are intended to be performed after board assembly . The alignment
procedures are also used after replacing a component or module causing misalignment. The
alignment procedures should be followed in the sequence presented. Certain sections of the
radio must be aligned using subsections of the alignment procedure before the whole board can
be aligned.
This alignment procedure is written for a complete realignment. If only a subsection is required,
use only the initial settings required as outlined in the procedure for the subsection.
The comm board must be placed into a main chassis before alignment. Unless otherwise
specified, alignment should be performed with the input power supply set to 27.5
±
0.2 VDC.
2. REFERENCE DOCUMENTS
004-00044-03 Min Prfm Spec, GNC 400 Comm
016-00214-XX Assy Dwg, GNC400 Comm PCB
016-00611-XX Assy Dwg, GNC400 Comm, 16 Watt
320-00099-06 Ca Assy, (B), GNC400 COMM
2.1 Test Equipment
The test equipment needed to perform an alignment of a GNC 400 COMM XCVR assembly is as
listed below.
DESCRIPTION
VENDOR/PART NO.
QTY
0-30VDC/0-6A
VARIABLE POWER
SUPPLY
TOPWARD MODEL 2306
OR EQUIV
1
486DX PC
W / SERIAL PORT
486DX PC
W / SERIAL PORT
1
Software - GNC400
Automated
Alignment Program
1
MANUAL TEST
PANEL
GARMIN GPS/GNC
MANUAL TEST PANEL
T10-00035-00
1
RADIO TEST SET
HP 8920A WITH OPTIONS
003/019/050/102
OR HP8920B WITH OPTIONS
001/102
1
DIGITAL
MULTIMETER
FLUKE 87 W/TEST PROBE LEADS
1
