VOR/ILS Analyzer EVS200
0796.1800.02 E-8 30
Chapter 3: Operation

RS-232-Interface operation

All important unit functions can be remote controlled via the RS-232-Interface (V24 standard) by a PC
terminal which can be operated with commercial terminal programs (e.g. Telix, Procomm...). AS a data
terminal (DDE) the VOR/ILS Analyzer EVS200 must be connected with a RS-232-1:1-Interface.Also
it is possible to control the unit with an user defined program. The necessary commands for that pur-
pose are described below.

COM-Parameter

The com parameters parity, number of data bits, and stop bits cannot be changed and are defined as
"firmware“.

non parity bit (N),

8 data bits (8),

1stopbit (1).

Handshake

Hardware handshake is renounced.
Handshake is performed by software as a transmitted sequence e.g. "READY“ or as a measuring
value or a tuning value e.g. "RF107000“.

Control commands

There are two categories of control commands.
super commands (mode independant, unit related)
mode dependant commands (specified mode must first be selected)
The following table makes clear the control commands structure.
unit related
control commands mode dependant control commands
ILS-Mode VOR-Mode

Level-Mode BEACON-
Mode
BI
EC0
EC1
LA
LO
MB
MI
ML
MV
RES
RF(Freq. kHz)
RF
TEST
VER
AF8
AM2
AM3
AM8
AM9
BW0
BW1
D1
D2
DD0
DD1
FA0
FA1
FA2
FA3
PH
SD0
SD1
AF8
AM0
AM1
AM8
AM9
BE
D1
D2
FA0
FA2
FA3
FM0
FM1
BW0
BW1
LR
LD
SR
AF4
AF5
AF6
AF7
AM4
AM5
AM6
AM7