Measurement Computing DBK Part 2 - Manual (Page 125)

1 – Turn off system power and disconnect the DBK60
If the DBK60 is presently connected in a system, turn off all system devices and disconnect the
DBK60 from the system.
2 – Remove the top cover (optional)
Removing the top cover is not necessary, but it does make it easier to set the JP2 jumper in step 6.
A removed cover also allows for configuration and signal connection changes to be made to cards
later on in the procedure, after the card drawer is returned to the DBK60.
To remove the top cover, simply remove the top cover screws and slide the cover towards the
termination panels.
3 – Remove the card drawer
To remove the card drawer, refer to the A, B, and C
call-outs in the figure at the right; then complete the
corresponding steps below.
A.
Remove the two screws that hold the card
drawer to the chassis.
B.
Loosen the three captive thumbscrews that hold
the termination panels to the chassis.
C.
Using the handle, carefully slide out the card
drawer.
Three Steps for Removing the Card Drawer
4 – Remove the termination panels
Remove the two screws [two per panel] that secure each termination panel to the card drawer
(see figure).
5 – Determine the power requirements
Depending on the power needs of your system’s DBK cards, you may need to add a power card.
Refer to Power Requirements in the DBK Basics section in regard to calculating your system’s
power needs.
A.
Use the DBK Power Requirements Work Table to calculate the power requirements of your
system’s DBK cards.
B.
Use the Available Power Chart to determine your system’s power availability.
C.
If the required power in step 5A is more than the available power in step 5B, or very close to it,
you will need to use auxiliary power. There are two DBK auxiliary power supply cards for use
in LogBook, DaqBook, and DaqBoard applications. These are the DBK32A and the DBK33.
• DBK32A – provides power at ±15 V.
• DBK33 – provides power at +5 V and ±15 V.
DBK Option Cards and Modules 989594 DBK60, pg. 3