User's Manual

PMAC VME Hardware Reference Manual
PMAC VME E-Point Descriptions 11
E96 - E97: Analog Source Isolate from Option 1V
E Point and
Physical Layout
Location Description Default
E96
A2 Jump 1 to 2 to connect A+15V on main
PMAC VME board to A+15V on option 1V
piggyback board.
Remove jumper to keep A+15V isolated
between option 1V board and main board.
No jumper installed
E97
A2 Jump 1 to 2 to connect A-15V on main
PMAC VME board to A-15V on option 1V
piggyback board.
Remove jumper to keep A-15V isolated
between option 1V board and main board.
No jumper installed
E98: DAC/ADC Clock Frequency Control
E Point and
Physical Layout
Location Description Default
E98
B4 Jump 1-2 to provide a 2.45 MHz (3.67 MHz
for Option 5) DCLK signal to DACs and
ADCs.
Jump 2-3 to provide a 1.22 MHz (1.83 MHz
for Option 5) DCLK signal to DACs and
ADCs. Important for high accuracy A/D
conversion on Acc-28.
Note: This also divides the phase and servo
clock frequencies in half.
See E29-E33, E3-E6, I10
1-2 Jumper installed
E99: Analog Source Isolate from Option 1V
E Point and
Physical Layout
Location Description Default
E99
A2 Jump 1 to 2 to connect AGND on main
PMAC VME board to AGND on option 1V
piggyback board.
Remove jumper to keep AGND isolated
between option 1V board and main board.
No jumper installed