Specifications
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®
Affinity LBD-200C-N1 Transmitter
Product Manual
5.4
Fusing and Protection
Fusing:
Location
Reference
Value
Thales P/N
Power Supply
Rear Panel
AC Fuse
4-Amp fuse
752785-01
PA Power Switch Circuit Breakers
(magnetic) Qty-4
40-Amp
754253-01
PA Fan Circuit Breakers (thermal) Qty-2
1-Amp
754383-01
Sub-Chassis fuse locations
Controls and Indicators:
The OEM Front-End Power Supply contains the following indicators:
Description
Signal
LED Indicator
AC Good
A lit LED indicates AC is present
Amber
Temp OK
A lit LED indicates DC output is
operating within tolerance
Green
DC Good
A lit LED indicates temperature
inside the power supply is within the
operating temperature range
Green
Thermal Protection:
Certain plug-in modules are thermally protected with over-temperature sensors. If temperatures
exceed 122º Fahrenheit (45º Celsius), the plug-in module is shut down by the microprocessor
until the temperature is below the trip-point level.
Interlocks:
Interlocks are performed through the software applications.
VSWR Protection:
The Voltage Standing Wave Ratio (VSWR) protection system will lower the transmitter output
power by 6dB if the reflected power exceeds 16%, of the transmitter output power (calibrated on
a 100% scale). If the reflected power reaches 25% of the transmitter output power, the VSWR
protection system shuts the transmitter down. To bring the transmitter back into operation after
a VSWR protection shutdown requires an operator to perform a transmitter reset through the
Omnitronix SL-81 Site Management system, local reset via MMI on front panel, or by cycling the
Upconverter Module power.
