SCU-17 USB I
nterfaCe
U
nIt
1
Introduction
The SCU-17 interface unit may be used for CAT control of the transceiver with
a computer via a USB connection; and for communications using SSTV, RTTY
and PSK digital modes.
Note:
YAESU does not produce CAT, SSTV, RTTY and PSK System operating
software, due to the wide variety of personal computers, operating sys-
tems, and applications in use today.
The SCU-17 provides CAT communication through the USB terminal when a
PC does not have an RS-232C connection.
The SCU-17 is equipped with a USB audio system device, so the TX and RX
audio system signals are accessible to the SCU-17 through the USB cable.
Therefore, the supplied USB cable is the only connection needed between
the SCU-17 and PC.
The SCU-17 is equipped with a two-channel USB serial device and enables
the various transmission modes and the CAT communication simultaneously.
The SCU-17 operates from the USB bus power; you do not need to prepare
an external power supply.
For RF isolation, the SCU-17 is designed with photo relays for the PTT/FSK
terminals. AF transformers are used in the AUDIO IN/OUT lines to provide
excellent ground isolation.
The SCU-17 is equipped with the TX and RX audio controls on the front pan-
el, for convenient level adjustment.
LED indicators on the SCU-17 front panel monitor the PTT and FSK control.
The operating conditions may be quickly confirmed.
Introduction
