Sperry Marine 4914-CA, Руководство по эксплуатации, установке и обслуживанию

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UJNU `çåÑáÖìê~íáçå=jÉåì=J=pÉêîáÅÉ=pÉíìé=N
hT=jrqbLeadJafcc=EhT=ãìíÉ=L=ÜÉ~ÇáåÖ=ÇáÑÑÉêÉåÅÉF
pmbba=cfiqbo
Configures the heading difference alarm function of the alarm relay K7
output
Settings: eadJafcc
Relay K7 is used to signal the heading difference alarm con-
dition. This option must be selected in multi compass sys-
tems which route the individual compasses’ heading
difference alarm relay outputs to a central alarm facility.
hT=rpba=clo=jrqb
Relay K7 is used to mute an audible alarm generated by a
central alarm facility. When this option is selected, relay K7
is actuated whenever an alarm is acknowledged or muted
locally at the NAVIGAT X MK 1.
In multi compass systems which also require a heading dif-
ference alarm output, a separate compass monitoring
device, such as the NAVITWIN IV, must provide the heading
difference alarm.
Sets the filter parameters used for the North speed error correction.
The preset factory defaults should not normally be altered. In high-
speed craft, however, it will be necessary to increase the maximum
speed value to prevent rejection of valid high speed values.
Settings: qK=`lkpqK=EíáãÉ=Åçåëí~åíF
filter time constant: 0 – 99 s (default = 20 s)
The filter time constant determines the level of filtering
applied to the incoming speed before it enters the calcula-
tion of North speed error correction.
Occasional dropouts and glitches will be completely
blocked for a duration of up to the time constant’s value.
At the same time, the effects of steady acceleration or decel-
eration are smoothed out. After a change of speed, a new
constant speed will enter the error correction routine with a
delay of approximately five times the time constant.
pmbba=jfkK=EëéÉÉÇ=ãáåáãìãF
minimum speed value: - 99.9 – + 99.9 kn (default = - 5.0 kn)
The minimum speed value determines the lower limit of the
valid speed range. Actual speeds below the limit will be
rejected. Should the actual speed remain below the limit for
more than 10 s, a “speed invalid” alarm will be given.
kçíÉ In case a „Speed Invalid“ alarm is triggered while the vessel is not in
motion or moving very slowly (e.g. when manoeuvring in harbour), this
is often caused by fast currents of fairway water increasing the - 5.0 kn
minimum speed default value.
In this case, the minimum speed value must be adjusted accordingly.