2.6.9.1
Emergency Power Switchover
In the event of a primary power supply failure, the network shall
automatically without interruption switch to emergency battery power and
indicate the failure within 15 seconds. When primary power is restored,
transfer back to operation from primary power shall also be automatic.
2.6.10
Network Battery Charger
Battery chargers shall be self-regulating. Each charger shall have the
capacity to completely recharge its associated batteries from full
discharge within 48 hours with the network fully operational on primary AC
power. The network shall remain operational on AC power with the batteries
removed.
2.6.11
Monitoring for Network Integrity
Provide base station receiving/control equipment which continually monitors
itself for integrity. Provide individual visual trouble indicators for
each major component. An audible signal shall activate in the event of
failure of any monitored component.
Provide a trouble silencing switch
which when operated, will silence the audible signal while the trouble
lamp(s) shall remain lit. If the silencing switch is not a
momentary-action-self-resetting type, upon correction of the trouble
condition(s) the audible signal shall again sound until the silencing
switch is returned to its normal position .
2.6.11.1
Receiver Monitoring for Integrity
The base station receiving/control equipment shall provide constant
monitoring of the operating condition of the signal receivers, and shall
indicate visually and audibly a trouble condition when sustained carrier
(RF) in excess of 15 seconds is detected.
2.6.11.2
Power Monitoring for Integrity
Each network shall continuously monitor its primary and emergency power
supplies. Any malfunction shall be indicated visually and audibly.
An
"open" in the battery circuit, or standby battery voltage below the level
capable of sustaining network operations shall cause activation of network
trouble signals.
2.6.11.3
Meters
Provide voltage and amperage indicators to monitor the status of the
emergency DC power supply. When the battery rack is within clear sight of
rack will satisfy this requirement.
2.6.12
Component Connections
Provide receiving/control equipment with modular components to allow
interchange of components for maintenance purposes. All interconnecting
cables and connectors shall be compatible with computer quality signal data
transmission.
2.6.13
Protective Finish
Provide factory finish on chassis, frames, and brackets associated with, or
SECTION 13853N
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