Procom EVS200 user manual FA3 Fast measuring on Activating the Fast measurement mode

VOR/ILS Analyzer EVS200

		Chapter 3: Operation
Command FA3
command	function
FA3 <Fast measuring on>	Activating the Fast measurement mode

The command FA3 switches on the fast measurement mode. The command FA3 performs the con- tinuous measurement and output of the RF level, Bearing, AM30, AM9960, FM-deviation, FM- Index. The 33 to 66-ms measurement interval consists of DSP analysis, DSP data transmission to the host processor and conversion of the DSP raw measurement value into dBm, Bearing °, AM % and FM Hz . The measurement values output is performed in this mode as interrupt operation via RS232 interface.

In this Fast-Mode (FA3) a measurement value set will only be transmitted to the PC if it is demanded by a short command (1 ASCII-Character). The response from the EVS200 is performed without a longer delay within about 15 to 20 ms between measurement value demand and measurement value transmission. The stated RS-232-transmission times are related to 19.200 Baud.

The measurement values can be read in and output as a text file corresponding to the terminal pro- gram.

The baud rate must be set to 19200 baud in the Setup of the VOR/ILS Analyzer EVS200.

It must be attended the acceptance of the data transfering rate by the terminal pro- gram.

￿The measurement can be stopped through the command FA0 (refer to Command FA0) or <CR >.

Example:

command from the controller

input: e.g. A

￿Demand for measurement

values output:

all ASCII characters without:

CR (0Dh), LF (0Ah), # (23h), @ (40h)

With the command FA3 the echo mode is automatically switched OFF.

response of the VOR/ILS Analyzer EVS200

output form: (RF level <CR >, Bearing <CR >, AM30 <CR >, AM 9960 <CR >), FM-deviation<CR >, FM-Index <CR >),

output form as FA2

example:	-412 <CR > (RF level),
	35506 <CR > (Bearing),
	304	<CR > (AM30),
	302	<CR > (AM9960),
	4800 <CR > (FM-deviation),
	160	<CR > (FM-Index),

Command FA0

command	function
FA0 <fast DDM measuring off>	deactivating the fast DDM measurement

The command FA0 switches off the fast DDM measurement.

Example:
	command from the controller	response of the VOR/ILS Analyzer EVS200
input:	FA0 <CR>	READY <CR/LF>
	fa0 <CR>	READY <CR/LF>

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