MDS 05-3305A01, Rev. E
MDS 4710/9710 Technical Manual
23
The AMASK command is used to set or display which events cause the
alarm output signal on pin 25 to be active. The default AMASK is
FFFF FFFF (hexidecimal). Therefore, all major and minor alarms pro-
vide a logic high on pin 25. The first four hexidecimal values represent
major alarms that provide a logic high on pin 25, and the next four hex-
idecimal values represent minor alarms. Converting the hexidecimal
value to binary shows which bits are set in the AMASK. For example:
AMASK (default) = FFFF FFFF (hex)
=1111 1111 1111 1111 1111 1111 1111 1111 (binary)
Each bit represents a different major or minor alarm. The most signifi-
cant 16 bits represent specific major alarms and the least significant 16
bits represent specific minor alarms. All major and minor alarms are set
as the default AMASK. Use the AMASK command to reset any or all of
these bits if alarm outputs for specific alarms are not desired.
Table 10
provides a list of event codes.
To disable the alarm signal for a specific alarm, reset the bit associated
to the specific alarm and convert back to hexidecimal.
ASENSE [HI/LO]
Alarm Sense
The
ASENSE
command sets or displays the sense of the alarm output at
Pin 25 of the
DATA INTERFACE
connector.
Entering the
ASENSE
command alone shows whether the alarm output is
active high or low. Entering the
ASENSE
command followed by
HI
or
LO
resets the alarm output to active high or low.
28
Total current fault
0000 0008
0000 0000 0000 0000 0000 0000 0000
1
000
29
Power output control
0000 0004
0000 0000 0000 0000 0000 0000 0000 0
1
00
30
RSSI reading below -105
0000 0002
0000 0000 0000 0000 0000 0000 0000 00
1
0
31
Internal temperature not in valid
range
0000 0001
0000 0000 0000 0000 0000 0000 0000 000
1
Table 10. Alarm Event Codes and Hex/Binary Values
Event Number
Text Message
Alarm Code
(hex)
32-bit Binary Equivalent