User Manual

Table Of Contents
System Description RF-Orchestra!™ Transmitter Installation and Operation
2-14 6880493G02-C July 2000
Orchestra Control Board
The OCB is a microprocessor/digital signal processor (DSP) based board located within the
OCM that responds to the RF-B! transmitter controller commands (see Figure 2-6). The OCB
directly controls the Exciter module to maintain proper RF modulation and time
synchronization for FLEX, ReFLEX, and InFLEXion protocol operation. The OCB monitors
proper operation in the Exciter and the PA through a serial peripheral interface (SPI) bus. The
OCB design captures all requirements for interface with the RF-B! transmitter controller,
according to the Paging Station interface (Plug and Play) protocol.
Table 2-2: RF-O! Transmitter Front Panel Indicators
LED Function Color
Control On ON after successful completion of reset sequence Green
Control Fail ON when an RF-O! control module failure is detected in the reset sequence Red
Disable ON when messaging is disabled Red
Alarm ON while any station alarm is active Red
PA Keyed ON when paging station is keyed (regardless of power output level) Green
Exciter Locked ON when paging station is locked on transmit frequency Green
Full Power ON when paging station is operating without any cutback Green
Pwr Ctbck
ON when power output is below the desired power setting (cutback)
BLINKING if paging station is disabled (shutdown)
Yellow