
nanoTX
TM
Telemetry Transmitter
35
Quasonix, Inc.
3.2 Thermal
It is important that the bottom surface (on the face opposite the product label) be securely attached to a baseplate
capable of dissipating the power produced by the transmitter model in use. This mounting baseplate must be flat,
smooth, and clean. Contact Quasonix for the heat sink power dissipation required for your nanoTX™ model.
ATTENTION:
Do not operate the transmitter without a proper heat sink.
Failure to do so may lead to permanent damage to the unit and will void the
warranty.
Overheating can occur in a matter of seconds when a transmitter is
not properly heat-sinked. In absolutely no case should any type of stickers or
labels be applied to the bottom surface of the transmitter.
The heat sink required for a particular transmitter depends heavily on the installation. Factors such as altitude, air
temperature, air flow, and mass of the mounting surface all have a substantial impact on the flow of heat away from
the transmitter. Quasonix offers a fan-cooled heat sink, as shown in Figure 3. Please contact Quasonix for heat sink
recommendations for your particular nanoTX™ transmitter.
Regardless of the heat sink, Quasonix strongly suggests using a thermal pad, such as Q-Pad
®
II from Bergquist.
3.3 Electrical
The standard nanoTX™ has two external connectors, a 15- or 21-pin single-row nano-D baseband connector, and a
right-angle through-hole MMCX RF connector. The 15-pin nano-D is only available for TTL-level clock and data
inputs (standard 01AA package). RS-422 clock and data inputs require the 21-pin nano-D connector (01AB
package).
A photo of the male 15-pin nano-D connector is shown in Figure 19, including identification of pin 1 and pin 15.
Figure 25: Male 15-pin Nano-D Connector
3.3.1
TTL Clock and Data Baseband
The pin assignments of the TTL clock and data baseband connector are outlined below. TTL baseband connector
pinouts are listed in Table 18.