August 2001
Series 7000 Reader Reference Guide
11
Draft Document
FCC ID: A92RU1001A
DB-25 Connector Function
DB-25 Pin Assignments
Pin
Name
Function
1
GND
Ground
2
BUFCOMP
Digital test signal: output of receiver
comparator
3
GND
Ground
4
PER_IN2
Peripheral input bit 2
5
PER_IN0
Peripheral input bit 0
6
PER_OUT6
Peripheral output bit 6
7
PER_OUT4
Peripheral output bit 4
8
TX_ASEL5
Transmit antenna select bit 5
9
TX_ASEL3
Transmit antenna select bit 3
10
TX_ASEL1
Transmit antenna select bit 1
11
RX_ASEL5
Receive antenna select bit 5
12
RX_ASEL3
Receive antenna select bit 3
13
RX_ASEL1
Receive antenna select bit 1
14
VCC
+5 volts
15
BUFCOMPIN
Analog test signal: input to receiver comparator
16
PER_I
Peripheral input
17
PER_I
Peripheral input
18
BLAN
Digital test signal
19
PER_OU
Peripheral output
20
PER_OU
Peripheral output
21
TX_ASE
Transmit antenna
22
TX_ASE
Transmit antenna
23
GN
Ground
24
RX_ASE
Receive antenna
25
R-ASEL
Receive antenna
Pin Assignment Details
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.