GE Bently Nevada 3300/25 Operation Manual page 82

3300/25 Dual Accelerometer Input Monitor Operation Manual
5. Calculate the multiplier value M. In this case:
6. Convert M to the closest 8 bit binary integer. The closest integer to 32.57 is 33,
and the 8 bit binary representation is 00100001. M7 is the most significant bit
(MSB), and M0 is the least significant bit (LSB).
7. Set the jumpers for the anti-aliasing corner frequency,
Aliasing Corner Frequency Jumper Table shown earlier in this section.
On the Filter Board
Install:
Remove:
8. Set the low-pass corner frequency. Step 1 tells you to select a value for clock
f
frequency
CLK
9. Calculate the divider ratio D.
10. Look at the Divider Ratio Table to find a match to the divider ratio D that was
calculated above. There is not a match for D = 716 within ±1 in the Divider Ratio
Table so select
11. Calculate D with
There is not a match for D = 400 within ±1 in the Divider Ratio Table so select
MHZ.
76
625
M =
19
W70,W71,W72,W73,W75, and W77
W56,W57,W69, and W74
f
beginning with = 3.58 MHZ.
CLK
3580000
D =
40
f
= 2 MHZ.
CLK
f
= 2 MHZ.
CLK
2000000
D =
40
= 32 . 57
. 188
= 716
× 125
= 400
× 125
f
, according to the Anti-
AA
f
= 1
CLK