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SunSDR2 DX User Manual
© 2020 Expert Electronics
REAR PANEL DESCRIPTION
diodes). If your inductive load gives a higher reverse current, it is necessary to use an external
diode in parallel to the connected load.
·
The X8 key is designed for control of the external PA.
Warning!
i
Never use a VG A cable f rom your monit or, t o connect ext ernal devices
i
Never connect monit ors wit h t he VG A int erf ace t o t he Ext CTRL connect or
i
I ncorrect connect ion of ext ernal devices and / or uncont rolled galvanic
connect ions could lead t o t he malf unct ions of t he t ransceiver or it s f ailure!
3.6
Reference input
A 10 MHz external reference oscillator can be connected to the REF I N connector with a
coaxial cable.
Set the Use ext ernal ref erence checkbox in the ExpertSDR2 menu to use an external
reference oscillator (more details in
menu).
Signal paramet ers of t he Ref erence Frequency:
·
Reference signal frequency of 10 MHz
·
Reference signal voltage: min. 2.5 V; max. 3.3 V
·
Input impedance of 500 Ohm
·
SMA type connector (female)
Note:
·
Use an external reference oscillator via REF IN connector to increase the stability of the
transceiver's tuning frequency, if +/- 0.5 ppm stability is not enough. Also transceiver's
frequency synchronization with an external reference oscillator is used when you want to sync
several devices with each other, from one reference oscillator.
·
The Phase frequency of the transmitted and received signals depends on the phase
frequency of the external reference oscillator.
3.7
Transverter connection
Connect VHF, SHF transverters to the A1 connector of the transceiver.
VHF, SHF transverter may also be connected to the transceiver via the ADC I N and DAC
OUT connectors.
ADC I N used as the input in the RX mode. DAC OUT used as the output in the TX mode.
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Содержание SunSDR2 DX
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