![Expert Electronics SunSDR2 Pro Скачать руководство пользователя страница 57](http://html1.mh-extra.com/html/expert-electronics/sunsdr2-pro/sunsdr2-pro_user-manual_2451834057.webp)
57
SunSDR2 PRO User Manual
© 2018 Expert Electronics
ExpertSDR2 SOFTWARE DESCRIPTION
5.3.1.7
Ext Ctrl
To control external devices, the transceiver has a special connector Ext Ct rl. Settings could be
adjusted separately for the RX mode and TX mode.
The Ext Ct rl connector output consists of the keys with open collector. For more details on how
to use the Ext Ctrl connector, look up the "
Connect ing an ext ernal PA, f an, relay et c. t o
t he SunSD2 PRO
" document.
The best way to use this feature is to switch the narrow-band filters in the RX mode and switch
the LPF in the TX mode. Also, you may arrange your own antenna switch, having only the relay.
You may use the 7th key to control a cooling fan for the transceiver heatsink. There is a
Thermost at feature implemented in the software, via this feature you may control the fan and
set operational temperature thresholds.
Enable – checkbox to enable control of the electronic keys.
Thermost at – activate the Thermostat mode and the seventh key. It doesn't matter what
checkboxes were set in the 7-th column before, but it would be better if none, just in case.
Note:
·
The pin 14 directly connected to an external power supply connector and has the same
voltage. Also, pin 14 power line has a 1A fuse and serial diode for protection. The GND 15 pin
has a direct connection to common GND of the radio and direct connection to negative pin of
the power supply connector. You should set protective diode in parallel with FAN, cathode to
+V, anode to -V.
t High C – high-temperature limit to turn on the fan.
Содержание SunSDR2 Pro
Страница 2: ......