Measurement Computing DBK Part 2 - Manual (Page 277)

Connection Tips
CAUTION
Turn off power to the host PC and externally connected equipment prior to connecting
cables or signal lines to DBKs. Electric shock or damage to equipment can result even
under low-voltage conditions.
Take ESD precautions (packaging, proper handling, grounded wrist strap, etc.)
Use care to avoid touching board surfaces and onboard components. Only handle
boards by their edges (or ORBs, if applicable). Ensure boards do not come into
contact with foreign elements such as oils, water, and industrial particulate.
Do not confuse connectors. Ensure that you only connect P1 I/Os to P1, P2 I/Os to P2,
and P3 I/Os to P3. Improper connection may result in equipment damage.
When using P4, e.g., for a DaqBoard/2000, be sure to align the P4 orientation
indicators [white arrows] prior to mating the P4 connectors.
1.
Ensure power is removed from all device(s) to be connected.
2.
As soon as the DBK214 cover is removed, verify that the Host
Power LED is “Off.” See figure at right for location.
3.
Observe ESD precautions when handling the board and making
connections.
4.
Do not make redundant connections. For example, for
ANALOG IN you could use the P1 (DB37) connector,
or Terminal Blocks TB9 through TB12, or BNC connectors.
Redundant connections must be avoided .
Location of DBK214’s
Host Power LED
5.
You do not need to remove the cover unless you need to access a terminal block, customize
an RC filter network, or set a BNC channel to Single-Ended mode or to Differential mode
(via Jumpers J0 through J7). Information regarding these tasks follows shortly.
RC filter
networks are not to be made or used in association with additional DBK expansion
options
.
6.
DBK214’s 100-pin P4 typically connects to a DaqBoard/2000 Series board’s P4 via a CA-
195
one-hundred conductor ribbon cable.
The DaqBoard/2000 Series boards communicate [external from the host
PC] through a 100-pin P4 connector. The P1, P2, and P3 connectors
discussed in association with these boards are subset connectors of the 100-
pin P4 connector. The System Connections and Pinouts chapters of the
product hardware manuals include pinouts.
7.
Connections to the DB37 connectors are made via CA-37 cables or CA-255 cables:
(a)
P1 connects to an analog DBK card or module’s P1 connector.
(b)
P2 connects to a Digital DBK card or module’s P2 connector.
(c)
P3 connects to a Pulse/Frequency DBK card module’s P3 connector.
8. Refer to the separate CE Cable Kit instructions that are included with the associated CE cable
kit. Refer to the Declaration of Conformity in regard to meeting CE requirements.
DBK Option Cards and Modules 967894 DBK214, pg. 3