Environmental Monitoring Unit
3–3
Status Indications
Status indications provided by the EMU are shown in Figure 3–2. The EMU contains
three status LEDs (
1 through 3), a two-digit, seven-segment alphanumeric display 4,
and two switches (
5 and 6). The following sections describe each status indicator.
Figure 3–2. EMU bezel switches and status LEDs
The EMU uses audible and visual alarms to report faults and error conditions to the user
(see Table 3–2).
1
EMU status LED
2
Power status LED
3
Enclosure fault LED
4
Alphanumeric display
5
Increment switch/LED
6
Group switch/LED
Table 3–2 EMU Alarm Types
Alarm Type
Description
Audible
A high-pitched sound generated for each detected fault or error condition. If
desired, the audible alarm horn can be disabled or muted.
Alphanumeric
id
0.2.
04.
05
Displays an alphanumeric code that identifies the enclosure address and error
code information.
Status LEDs
Displays enclosure and EMU operating status. Each LED displays three possible
states (depicted at left): O
FF
(left LED), F
LASHING
(middle LED), and O
N
(right
LED).
CXO6355A
1
2
3
4
5
6