INDUSTRIAL I/O PACK SERIES
AVME9675A
VME64x bus 6U CARRIER BOARD
Acromag, Inc. Tel: 248-295-0310
- 20 -
http://www.acromag.com
- 20 -
https://www.acromag.com
Register
Data Transfer Time
All Carrier Registers
450 nS, Typical.
IP Registers
450 nS, Typical, If No Wait States*
* See IP module specifications for information on wait states. IP module
register access time will increase by the number of wait states multiplied by
125nS (the period of the 8 MHz clock).
2.14 FIELD GROUNDING CONSIDERATIONS
Carrier boards are designed with passive filters on each supply line to each
IP module. This provides maximum filtering and signal isolation between
the IP modules and the carrier board. However, the boards are considered
non-isolated, since there is electrical continuity between the VME64x bus
and the IP grounds. Therefore, unless isolation is provided on the IP module
itself, the field I/O connections are not isolated from the VME64x bus. Care
should be taken in designing installations without isolation to avoid ground
loops and noise pickup. This is particularly important for analog I/O
applications when a high level of accuracy/resolution is needed (12-bits or
more). Contact your Acromag representative for information on our many
isolated signal conditioning products that could be used to interface to the
IP input/output modules.