Magni AVM-510A Series, Руководство оператора

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Operating the MM410/AVM-510A
6-21
20 Second Delay
When any control setting on the front panel is changed, the MASTER ALARM is disabled for 20
seconds. This prevents the AVM-510A from sending an alarm while it changes from one mode to
another. After the 20 second delay, any change in the signal that causes an out of tolerance condition
triggers the MASTER ALARM immediately.
Memory Status
The recall of the first three memories is indicated by three separate ground closures in the DC
CONTROL/ALARM connector as listed in the following table. For example, when memory 1 is
recalled, either from the front panel or remotely by grounding pin 1 of the connector, pin 6 changes
from +5 V dc to 0 V dc.
NOTE: The MM-410 does not support the Alarm Out function (pin 5) of the
DC/CONTROL/ ALARM connector.
Pin Description
5 Alarm out
6 Memory 1 out
7 Memory 2 out
8 Memory 3 out
9 Ground (earth)
NOTE:
This is not a momentary change of state. The output pin goes to ground (earth)
and stays there until another memory is recalled, regardless of other changes that might
be made from the front panel. Even storing a new configuration in a memory does not
change the grounded state of this pin.
Controlling the AVM-510A with a Computer
From a remote location, you can control the AVM-510A with a computer. For shorts distances, you
can connect directly through the computer’s serial port. For greater distances, connect over telephone
lines with a modem. Suggestions for applications and general setup are provided in this section.
Complete instructions for this type of AVM-510A control can be found in the Logbook Software
manual.
To connect at long distances, you need:
•
A computer running Windows 3.1, 95, 98, or NT and a modem
•
A modem for each AVM-510A
•
A telephone number for the AVM-510A modems
•
Logbook Software