Memorex RX 1 Smart Installationshandbuch PDF herunterladen (Seite 177)

176 | Simrad MX500

Speed Over Ground Pulse Output

The MX500 can output the GPS calculated speed over

ground in a pulse format. Refer to the Specifications sec-

tion of this manual for signal characteristics.

The pulse output is derived from pins 7 (orange) & 8

(brown) of the AUX cable. The speed log out (+) is the

orange wire, while the speed log (-) is on the brown wire.

It is an RS-422 level signal, and may not be compatible

with every installation.

To setup the MX500 software, select the CFG1/Log Pulses

screen. This screen controls the output port (Pulse) of

the speed over ground log output from the MX500 at

a user determined pulse rate of 100 to 500 pulses per

nautical mile (200 is the pre-selected value). The default

condition of the Speed-Over-Ground output is “No” or not

active.

External Alarm Output

The MX500 Ext. alarm output connection is on pins 3 and

4 of the AUX (8-pin) cable. They are held open (float-

ing) during normal operations. In an alarm condition, the

external alarm pin is switched to ground potential. When

an alarm condition is cleared or acknowledged, the Ext.

alarm signal will return to open condition automatically

(refer to table below for relay conditions). However, it is

possible to retain the external alarm condition by setting

the “Retain external alarm:” to ON. At this setting, the

external alarm signal can only be cleared by correcting

the problem.

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Memorex RX 1 Smart Installationshandbuch Seite 177