Calian SatService sat-nms Manuel de l'utilisateur - Page 12

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temp

The temperature measured inside the power sensor enclosure. The value is in degree Celsius.

sens

The actual input amplifier sensivity. sens is either HIGH or LOW

tflt

The threshold fault state. if the power reading is below the threshold the value is FAULT,

otherwise it is OK

4.3 The 'set' Command

To set the operational parameters the power sensor, request the 'set' document with a HTTP GET

command and append the parameters which shall be set to the URL. The path which must be sent with the

GET request is

/set?fmt=txt&...

where ... stands for an arbitrary number of parameter definitions, each consisting of a key word and the

associated parameter value, separated by a '=' character. Assuming the power sensor listens to the IP

address 10.0.0.1, an example URL for this request is:

http://10.0.0.1/set?fmt=txt&smod=AUTO&offs=0

The 'fmt=txt' parameter forces the power sensor to reply a one line text document rather than the HTML

coded page which is normally displayed by the web browser. The parameter definitions 'smod=AUTO' and

'offs=0' shown in the above example make the power sensor to select it's sensivity range automatically and

to clear any user defined offset to the measurement value. For a complete list of keywords see the table

below.

The power sensor replies to every 'set' request with a complete list of parameters in one line. Like with the

'read' command, the line consists of a set of keyword - value pairs, separated by '&' characters. Within each

pair, keyword and value are separated by the '=' character.

smod=AUTO&fltr=OFF&thrh=-99.99&freq=0&fcor=0.00&offs=0.00&snr=0D8F9

The values contained in this list are the values which actually are applying, including the new values read

from the 'set' URL. The power sensor does not give a fault message if it receives an invalid parameter

definition. It limits parameter values to a valid range or selections instead. If a keyword is not known, it

ignores this parameter completely. To read the parameters actually set with changing a value, send a HTTP

GET request with 'fmt=txt' as the only parameter.

The table below describes the valid parameter settings (keywords and selection tokens are case sensitive):

smod Sets the sensivity range, the power sensor uses. AUTO makes the power sensor select the

appropriate range automatically. LOW selects the low sensivity range (for high levels), HIGH

selects the high sensivity range. It is strongly recommended to operate the power sensor with

smod=AUTO. The power sensor uses this as fall-back, if it receives an invalid 'smod' selection.

fltr

Sets the filter, the power sensor applies to the measured values. Valid choices are OFF, FAST and

SLOW. OFF is the default value the power sensor uses if it recognizes an invalid 'fltr' selection.

thrh

Defines the alarm threshold value. If the displayed power value (with any user defines offset and

frequency response calibration already applied) drops below this limit, the power sensor reports a

'low signal' alarm and opens the fault relay contact. To disable the threshold, set it to -99.99.

freq

Defines the frequency of the measured signal in MHz. If this parameter is not zero, the power

sensor looks up the frequency response calibration offset for the given frequency and adds this

offset to each measured value before it is displayed. 'freq' accepts integer numbers on the range 0

.. 19000.

fcor

The calibration offset, the power sensor actually adds to each measured value due to the

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