User Manual

36
Pin # Name Function
16 PER_IN3 Peripheral input bit 3
17 PER_IN1 Peripheral input bit 1
18 BLANK Digital test signal: blanking signal
19 PER_OUT5 Peripheral output bit 5
20 PER_OUT3 Peripheral output bit 3
21 TX_ASEL4 Transmit antenna select bit 4
22 TX_ASEL2 Transmit antenna select bit 2
23 GND Ground
24 RX_ASEL4 Receive antenna select bit 4
25 RX-ASEL2 Receive antenna select bit 2
Receive Antenna Select Lines
Pins 13, 25, 12, 24, and 11 are the high order bits of the hardware
pins that select the receive antenna. Bit 0 is kept internal to the
interrogator. These lines are used to drive external multiplexers for
multi-antenna systems. They are controlled by:
1. Setting up the antenna select table in flash memory (if necessary)
using Load Antenna Table command.
2. Issue the Set Antenna Quantity command.
3. Default mode automatically cycles through all antennas. The
interrogator will freeze at a certain antenna selection by issuing
the Select Receive Antenna command.
U519 FCC rewrite 2-22-01.p65 2/22/2001, 2:43 PM36