2-7
Channel Expansion
If you require additional analog input channels or signal conditioning for
transducer inputs, you can use any combination of up to eight 16-channel
EXP-16 expansion boards, eight 16-channel EXP-16/A expansion boards,
and/or eight 8-channel EXP-GP expansion boards to increase the number
of available channels to 128. You can also use up to four MB-02
backplanes to increase the number of available channels to 68.
For the EXP-16, EXP-16/A, and EXP-GP, you attach the expansion
boards in a daisy-chain configuration using the S-1800 or C-1800 cable.
The first expansion board in the daisy chain is associated with on-board
channel 0, the next expansion board is associated with on-board channel
1, and so on. You specify the associated on-board channel by setting a
jumper on each expansion board. You can access any unused on-board
channels by attaching an STA-08 or STA-08PGA screw terminal
accessory to the last expansion board in the daisy-chain configuration.
Figure 2-2 illustrates a daisy-chain configuration of two EXP-16
expansion boards, one EXP-GP expansion board, and an STA-08 screw
terminal accessory connected to a DAS-800 board.
Figure 2-2. Channel Expansion
For information on attaching multiple MB-02 backplanes, refer to the
MB
Series User’s Guide
.
DAS-800
Board
EXP-16
EXP-16
EXP-GP
STA-08
On-board
channel 0
On-board
channel 1
On-board
channel 2
On-board
channels 3 to 7
