Keysight 34934A - Page 156

2 Base Matrix Configuration
156 Keysight 34934A User’s Guide
Placing ID Jumpers for 8x64 The ID jumpers allow the 34980A to recognize
the 8x64 matrix configuration upon mainframe bootup. Jumper placement
guidance is provided (on the 8x64 removable overlay) as shown below left; the ID
jumper block is shown at right with jumpers removed.
To set the correct ID code for 8x64, place two vertically positioned jumpers as
shown below.
Placing Safety Interlock Continuity Jumpers for 8x64 At the bottom (end
opposite the D-Sub connectors) of the terminal block are two 20-pin extension
headers—marked J24 and J25 on the circuit board. These headers provide access
to the module’s rows. Pins 19 and 20 on each header must be shorted to provide
continuity for the module’s safety interlock function.
ID JUMPERS
1
0
Location of
placement
guidance
for ID
Jumpers
ID JUMPER block
34934T OPT002
1 Wire
OPERATION
8X64
ID
JUMPERS
U
N
U
S
E
D
1 0
JUMPERS
ID
CAUTION
The ID jumpers MUST correspond to the matrix configuration set by the
CONFIG jumpers in the previous step. The instrument firmware functions
based on the ID it detects from the (ID) jumper positions and assumes the
CONFIG jumpers are set accordingly.