Power Control - Celestron 94035 Manual De Instrucciones

DEW HEATER CONTROL
The Smart DewHeater Controller 2x provides automatic "smart"
control for up to two dew heater rings or dew heater bands/strips.
If you are using the controller with a Celestron Dew Heater Ring,
connect the ring's power input jack to one of the controller's dew
heater output ports using the extension cable that comes with the
ring. Next, plug the included thermistor cable into the ring's thermistor
jack and the corresponding thermistor port on the controller. (Figure
3) The thermistor indicates the Schmidt corrector lens's temperature.
The controller uses this data along with information from the
controller's integrated environment sensor (i.e., ambient temperature
and humidity) to provide just the right amount of power to the ring
to prevent dew. If you are using battery power, this system greatly
increases battery life under most conditions. Once you connect the
ring to one of the controller's dew heater ports, it will begin to heat up
(unless the port has been manually disabled, which will be discussed
later in this manual).
Fig 3
Connect a Celestron Dew Heater Ring to the controller using the extension cable that comes
with the ring and the thermistor cable that comes with the controller.
You will need an additional thermistor cable if you wish to use
automatic smart control for more than one Celestron Dew Heater
Ring. The thermistor cable is a standard 2.5mm audio cable, which
you can find at most electronics retailers. Be sure to get one that is
long enough to accommodate your setup.
The controller's environmental sensor resides in the "bridge" on the
controller's enclosure (Figure 2). This location protects the sensor
from any heat radiating from the enclosure while still providing good
airflow. An integrated environmental sensor gives you a simpler,
cleaner setup without dangling external sensors to get in your way.
Occasionally, you should recalibrate the environmental sensor.
Recalibrating heats the sensor so that any accumulated moisture
evaporates, ensuring the most accurate temperature and humidity
data and the most efficient power use. We recommend recalibrating
before initial use and after long periods of storage in humid conditions.
The process is easy; we'll explain it later in this manual.
If you do not wish to use automatic smart control, you can manually
set the power for each of the dew heater ports from 0% (off) to
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100% (full power). We'll discuss this option in more detail later in
the manual.
If you are using a non-Celestron heating band or strip, it will need an
RCA-type plug to connect to the controller's heater output ports. You
have two options for controlling third party bands/strips:
1. You can purchase the optional Thermistor for Celestron Smart
DewHeater Controllers to provide automatic smart power control.
Connect the heating band to the telescope and connect its plug
to one of the dew heater ports. Then, place the tip of the probe
thermistor under the heating band so it is secure (you may want
to use tape). Connect the thermistor's plug to the corresponding
jack on the controller (Figure 4). The probe thermistor is not as
accurate as the Celestron Dew Heater Ring's built-in thermistor,
which contacts the corrector lens directly. Still, it allows for
automatic smart control of heating bands/strips.
2. Alternatively, you can manually set the power output for each dew
heater port from 0% to 100%, as mentioned previously.
Extension cable
Thermistor cable
Fig 4
If you are using a heating band or strip from another manufacturer, you will need the
optional Celestron Thermistor for Smart DewHeater Controllers.
Each of the dew heater ports can deliver a maximum of 84W power
(7A max current), which should be more than enough for most dew
heaters. If a connected dew heater draws more than 84W, the port
will automatically shut off to protect the circuitry. After reducing the
load, you can re-enable the port, a process that we'll discuss later in
this manual

POWER CONTROL

A handy feature of the Smart DewHeater Controller 2x is its ability to
provide 12V DC power to an external device. Many users choose to
power their mount this way, enabling them to run their dew heaters
and mount from a single power source.
To power a 12V DC device, use the included mount power cable—
the cable with 12V DC barrel connectors on both ends (Figure 1).
Simply connect the device's power input to the controller's 12V DC
power output port. The port requires a 12V DC 5.5mm/2.1mm tip
positive barrel connector. One end of the mount power cable has an
integrated nut on its barrel connector. You can thread this onto the
power jack on Celestron mounts with a threaded barrel connector
for the most secure connection. Power will flow through the port as
soon as you connect the device; there is no need to turn the port on
(unless you disabled the port previously, which we'll discuss later).
Celestron Thermistor