Wavelength Electronics WTC3293, Техническое описание и руководство по эксплуатации

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WTC3243 TEMPERATURE CONTROLLER
To adjust the I TERM, use an ohmmeter to measure resistance
between Test Points 6 & 7 (TP6 & TP7).
Adjust the I TERM trimpot to the desired resistance, see
Table 5 for suggested starting points. An online design
calculator is available to assist in determining resistance
values.
www.teamwavelength.com/support/design-tools/wtc-calculator/
Or use Equation 3 to calculate the I TERM trimpot resistance.
Equation 4 shows how to calculate the I TERM, given the
trimpot resistance.
Equation 3. Calculating R
I
from I
TC
R
I
=
(
100,000
)
[ Ω ]
(1.89) I
TC
- 1
Equation 4. Calculating I
TC
from R
I
I
TC
= (0.53)
(
100,000 + 1
)
[Seconds]
R
I
Where:
R
I
is in Ohms (Ω)
I
TC
is in seconds
INSTALL THE WTC3243 ON THE WTC3293
EVALUATION BOARD
The notch at the top of the WTC3243 must be
oriented at the top of the Printed Circuit Board
(PCB). This orientation places PIN 1 in the upper
left corner. See Figure 11 below for proper
orientation.
USE
WITH
WTC3243
Temperature
Controller
ONLY
WAVELENGTH
ELECTRONICS
Figure 11. WTC3243 Installed on WTC3293 Eval Board
1. Match up the notch on the WTC3243 with the silkscreen
on the PCB.
2. Align the pins with the sockets, ensuring that all pins are
lined up in their respective sockets.
3. Press firmly to seat the WTC3243. Make sure that
none of the pins were bent during insertion before
continuing.
4. The pins alone do not provide sufficient mechanical
strength to secure the WTC to the circuit board. Install
two 4-40x3/8” screws from the bottom of the PCB into
the WTC3243 heat spreader. Choose opposite corners
that will not interfere with fan mounting.
5. Attach the snap-in standoffs. See Figure 12. WTC3293
Standoff Positioning on page 16 .
.
!