The AC outlet is a high current output (600 Watts) and is
energized when the preamplifier is ON. This outlet is
designed so the remote control can turn the unit ON and
OFF. In addition, a line noises suppressor (like the
Magenta QR1 or QR2) or any device that wants to be
switched ON and OFF with the remote control, can utilize
this function. This is ideal for integrated systems (6). If
you have a line noise suppressor and you want to do this
configuration, go to figure 3.
When the SF220 is connected to AC supply the filaments
will light on and will remain lighted until is disconnected.
This is to extend the tube life expectancy avoiding
applying the high voltage to the tube while the cathode is
cold.
Having the filaments on is the standby mode.
Controls
The SF220 is designed to be easy to navigate; all the
main functions can be activated by the remote control or
the buttons and knob in the unit.
All the main discreet functionality is accessible from the
remote control unit.
On the front panel the SF220 has a big volume knob and
the IR sensor (8). On the rear panel there are two
buttons; one is a toggle ON/OFF switch and the other is a
sequential input selector (5).
Connecting the SF220 to an automation system
In the rear part there is a serial RS232 connection port
with 2 way communication. This feature is for integrating
the SF220 to an automation system.
If you want to control it by itself it, can be connected to a
web server (not included).
The RS232 Code are:
Selection:
!1ENT01 !1ENT02 !1ENT03 !1ENT04
Direct input: !1ENT05
Mute:
!1ENT06
Volume change
UP
!1VOL99
Down
! 1VOL55
Power OFF ! 1PWR0
Power ON !1PWR1
Toggle
! 1POW2
