
INTRODUCTION
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1-7
SIG-00-07-11 SEPTEMBER 2012 (REVISED OCTOBER 2019)
Version No.: B.2
Table 1-1 Control, Indicator, and Connector Locations
Item
No. on
Fig. 1-3
PHYSICAL
DESCRIPTION
FRONT-PANEL
NOMENCLATURE
FUNCTION
1
2-line X 20-character
display
Display
Displays site configuration settings, error
messages, log contents and system status.
2
Embossed keypad with
tactile/audible feedback
25 keys with
individual
function text
Used to navigate through menu system.
3
Status LED
Power
Green LED lights when power is applied to the
VIU.
4
Status LED
Health
Yellow LED indicates VIU health as follows:
Slow flash (0.5 Hz)
– VIU is healthy and
communicating with vital CPU.
Fast flash (2 Hz)
– VIU is unhealthy.
5
Status LEDs
GPS
Yellow and green LEDs are associated with
GPS connector on top of unit. LEDs indicate
the following:
Green on steady
= looking for GPS satellites
Green flashing
= found satellite and
generating timing pulse
Green off
= GPS failure or not used
Yellow on steady
= GPS health OK
Yellow off
= GPS health problem
6
Status LEDs
ECD
Show Write (green) & Read (red) activity
between ECD located on the power connector
and the internal CPU.
7
Status LEDs
ETHERNET
Port 1 Port 2
Yellow and green LEDs are associated with
Ethernet ports 1 and 2 on top of unit. LEDs
indicate the following:
Yellow not lit
= 10 Mbps link rate
Yellow lit
= 100 Mbps link rate
Green flashing
= Link-up and message
activity.
NOTE: Port 2 indicators apply to either
Ethernet Port 2 or ESSR only (Port 2),
depending on which is in use. Both cannot be
used simultaneously.
8
Status LEDs
SERIAL
TX RX
Show TX (green) & RX (red) activity on serial
connector located on top of VIU.
9
Status LEDs
INPUT STATUS 20 red LEDs. Indicate status of monitored vital
inputs.
10
RJ-45
Ethernet Interface
Laptop
(Ethernet)
10/100 Base-T Ethernet port. Yellow and
green LEDs adjacent to the port indicate the
following:
Yellow not lit
= 10 Mbps link rate
Yellow lit
= 100 Mbps link rate
Green flashing
= Link-up and message
activity.