Simex SRT-77, Руководство пользователя

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User manual - METER SRT-77-XA
placed in ”HOLd” menu (see description of ”HOLd” menu ). The detection of the peak can be
done if the measured signal raises and drops of value at least equal to parameter ”PEA” .
Detected peaks are displayed during the time defined by parameter ”timE” . If a new peak will
be detected while one is displayed, this new peak will be displayed and display time counter
will be cleared
(Figure 6.1). If no peaks are detected while time
”timE”
elapses
,
device starts
to show the current value of input signal again. If „
HdiS
”=”
HOLD
” then setting parameter
"timE"
=
0.0
causes holding peak value until
[ESC]
button is pressed. If „
HdiS
”=”
rEAL
” then
value "timE" = 0.0 means no holding. Displaying peak value is signalized by flashing most right
decimal point.
The relays/LEDs can be controlled depend on the current value of input signal or the
peak value (see ”HOLd” menu ).
Figure 6.1. Process of peaks detection
6.3. CONTROL OF THE RELAY OUTPUTS
The control of the object (measured signal) is realized via relay outputs. Front panel
LEDs named „ R ” indicates the state of particular relay output.
If device is not equipped with one or more relay outputs, menus refer to this relays
are available, but apply to LED indicators only. In such case LEDs indicates
exceeding of particular thresholds.
Modes of the control can be changed depend on the values of parameters
“SEtP”
,
“SEt2”,
“HYSt”
,
“modE”
,
“t on”
,
“toFF”
,
“unit”
and
“AL”.
Depend on
“modE”
parameter, relays
can be not used or controlled over one or two thresholds values.
If one threshold is used (Figure 6.2) the relay can be turned on ( “modE” = ”on” ) or off
( “modE” = ”oFF” ) when the input signal value is contained in zone A. If two thresholds are
used (Figure 6.3) the relay will be turned on when value of input signal is contained in zone A
( “modE” = ”in” ) or zone B ( “modE” = ”out” ) and turned off if the signal is contained in the
second one.
15
”timE”
measure
time
”timE”
”PEA”
”PEA”
real measurement result
display value
i