GEI-100268
3
Testpoints and Jumpers
The BAIA board provides three testpoints for signal measurement (see Figure 1).
These testpoints are accessible through the top opening in the board's front panel (for
factory use only).
Testpoint
Jumper
Functions
1
AIN1
Buffered analog input 1
2
AIN2
Buffered analog input 2
4
ICOM12
Common for analog inputs
Four analog input jumpers are provided (in two pairs) for a given analog input circuit,
A (VIN) and B (4
−
20 mA). The jumper should be in either the 4
−
20 mA position or
in the VIN
position.
Function
Description
JP5A
Lowers AIN1 input impedance
JP5B
Connects burden resistor across AIN1
input pair
JP6A
Lowers AIN2 input impedance
JP6B
Connects burden resistor across AIN2
input pair
I/O Connectors
The BAIA board connects to and mounts to the control rack backplane through two
connectors, P2 and P1. See Figure 1 for locations and Tables 1 through 7 for pin
descriptions.
