User's Manual

96 68P80801H45-1 1/20/2002
Troubleshooting EBTS System Manual - Vol 2
QUAD Base Radio Signals
QUAD Base Radio Signals
Table 43 lists and describes signals for the QUAD Base Radio.
Table 43 QUAD Base Radio Signal Descriptions
Signal Name Description Special
28.6 Vdc 28.6 Vdc output from PS
14.2 Vdc 14.2 Vdc output from PS
3.3 Vdc 3.3 Vdc output from PS
GND Station Ground
RX Branch 1 RX Branch 1 from RFDS 50 Ω
RX Branch 2 RX Branch 2 from RFDS 50 Ω
RX Branch 3 RX Branch 3 from RFDS 50 Ω
RX1_EXP1 RX1 (branch 1) expansion output 1 50 Ω
RX1_EXP2 RX1 (branch 1) expansion output 2 50 Ω
RX1_EXP3 RX1 (branch 1) expansion output 3 50 Ω
RX2_EXP1 RX2 (branch 2) expansion output 1 50 Ω
RX2_EXP2 RX2 (branch 2) expansion output 2 50 Ω
RX2_EXP3 RX2 (branch 2) expansion output 3 50 Ω
RX3_EXP1 RX3 (branch 3) expansion output 1 50 Ω
RX3_EXP2 RX3 (branch 3) expansion output 2 50 Ω
RX3_EXP3 RX3 (branch 3) expansion output 3 50 Ω
5 MHz/1 PPS 5 MHz/1 PPS reference to the BRC
SPI_ENABLE Host Centric SPI Enable
SPI_MISO Host Centric SPI MISO
SPI_MOSI Host Centric SPI MOSI
SPI_CLK Host Centric SPI Clock
SPI_A0 Host SPI Device Address Line A0
SPI_A1 Host SPI Device Address Line A1
SPI_A2 Host SPI Device AddressLine A2
SPI_M0 Host SPI Module Address Line M0
SPI_M1 Host SPI Module Address Line M1
SPI_M2 Host SPI Module Address Line M2
SPI_M3 Host SPI Module Address Line M3
WP_ Write Protect (active low)
PA_ENABLE Turns off PA bias with active low
SLEEP_ Sleep signal from PS
SHUTDOWN_ PS reset line from BRC
CD RS232 Carrier Detect
RxD RS232 RX Data