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NI 9214 Operating Instructions and Specifications
18
ni.com
best acc
u
racy res
u
lts, follow these g
u
idelines for minimizing
thermal gradients:
•
Use small-ga
u
ge thermoco
u
ple wire. Smaller wire transfers
less heat to or from the terminal j
u
nction.
•
If yo
u
are
u
sing a low channel co
u
nt on the mod
u
le, insert the
foam pad in the NI TB-9214 opening. Refer to the
section for more information.
•
R
u
n thermoco
u
ple wiring together near the NI TB-9214 to
keep the wires at the same temperat
u
re.
•
Avoid r
u
nning thermoco
u
ple wires near hot or cold objects.
•
Minimize adjacent heat so
u
rces and air flow across the terminals.
•
If possible,
u
se the foam pad in the NI TB-9214 opening to
restrict airflow aro
u
nd the terminals.
•
Keep the ambient temperat
u
re as stable as possible.
•
Make s
u
re the mod
u
le terminals are facing forward or
u
pward.
Keep the mod
u
le in a stable and consistent orientation.
•
Allow the thermal gradients to settle after a change in system
power or in ambient temperat
u
re. A change in system power
can happen when the system powers on, the system comes o
u
t
of sleep mode, or yo
u
insert/remove mod
u
les. Refer to the
warm-
u
section for more
information.
NI_9214.fm Page 18 Monday, November 1, 2010 9:52 AM