Ametek Land System 4 Landmark Basic - 4 Using the Processor; Location of Controls; Functional Block Diagram; Time Functions

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User Guide Landmark Basic
Signal Processor
4 Using the Processor
4.1 Location of controls
The processor has controls for adjusting Averager response, Peak Picker
decay rate and Emissivity/Non-Greyness value. The controls are on the front
panel of the processor. See Fig. 6.
4.2 Functional Block Diagram
A functional block diagram of the Landmark Basic processor is given in Fig. 2
(Page2).
4.3 Time Functions
Caution
In order to avoid unexpected signal outputs during commissioning or
systemdebugging,setboththetimefunctionstominimum(i.e.rotate
theaveragerandpeakpickerknobsfullyanti-clockwise).
The averager and peak picker functions are always in circuit and process the
signal in a serial manner i.e. the input signal is averaged before being peak
picked. The peak picker response to a changing input signal is therefore set
by the averager response time setting.
4.4 Averager
TheAveragerresponsetimeisadjustedbyturning‘Resp’knob(seeFig.6).
1) Toincreasetheresponsetime(i.e.tomakeitslower),turntheknob
clockwise.
2) Todecreasetheresponsetime(i.e.tomakeitfaster),turntheknob
anticlockwise.
3) Toremovetheaveragerfromthesignalpath,turnthe‘Resp’knobfully
anti-clockwise.
AtypicaloutputoftheAveragertimefunctionisgiveninFig.7(overleaf).