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4.7 Serial Port Software Configuration
The SSD120-(XX)N-RS5 incorporates five RS232 compatible outputs, which are configured into
two groups. The two serial data groups may be configured via software to transmit two (2) different altitude
data protocols simultaneously.
Connect the digitizer to an IBM compatible computer running HyperTerminal as described in §4.5
and as shown in the Dynamic Calibration Block Diagram. Assign the serial port protocols as follows:
Apply power to the digitizer and after the self-test time has elapsed, altitude data will appear on the
PC screen.
Type<enter> The digitizer will respond with ?>(current altitude)
Type ADJ<enter> Accesses the digitizer adjustment program.
The Digitizer responds A=
Type P<enter> To identify the current serial port settings.
The digitizer will respond with a three-digit number as follows:
Serial Altitude Data Resolution
1.
The first digit represents the serial altitude data resolution.
0 = Use D-Sub connector protocol hardware jumpers.
1 = 100 foot resolution on all serial outputs.
2 = 10 foot resolution on all serial outputs.
2.
The second digit represents the protocol selection for TxD1, TxD2 and TxD3.
0 = Use D-Sub connector protocol hardware jumpers.
1 = UPS Aviation Technologies. 1200bps.
2 = Trimble/Garmin. 9600bps.
3 = Northstar. 2400bps.
4 = Magellan, 1200bps.
5 = ARNAV, 9600bps.
6 = UPS AT 618 Loran 1200 bps. (IIMorrow)
3.
The third digit represents the protocol selection for TxD4 & TxD5.
0 = Use D-Sub connector protocol hardware jumpers.
1 = UPS Aviation Technologies. 1200bps.
2 = Trimble/Garmin. 9600bps.
3 = Northstar. 2400bps.
4 = Magellan, 1200bps.
5 = ARNAV, 9600bps.
6 = UPS AT 618 Loran 1200 bps. (IIMorrow)
Software Configuration Example: Type P215<enter>
Defined as 10 foot resolution on all serial data.
UPS Aviation Technologies protocol transmitted on TxD1, TxD2 & TxD3.
ARNAV Systems protocol transmitted on TxD4 & TxD5.
a b c
TxD4 & 5 Protocol
TxD1 thru 3 Protocol
Page 21 of 57
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