Idiomas disponibles
Idiomas disponibles
10
BODE FREQUENCY SHIFTER 1630
BODE FREQUENCY SHIFTER 1630 Controls
(1)
(3)
(2)
(6)
(7)(8) (9) (10)
(EN) Controls
The BODE FREQUENCY SHIFTER 1630 shifts the frequency spectrum of a given
signal by either a fixed amount, or one that varies using control voltages. Its uses
include tonal modification, feedback suppression and frequency modulation.
(1)
(2)
(4)
(5)
(3)
SHIFT CONTROL – use this control to set the amount of fixed frequency shift,
according to the setting of the Scale control (2). Turning the control CW shifts
the frequency upwards; CCW shifts down. Note that frequencies cannot be
shifted below 0 Hz, so when using a low frequency input once 0 Hz downshift
is reached the down shift will wrap around to become an up shift.
SCALE – use this switch to set the scale for the frequency shift. The available
options are:
0 – no shifting takes place, Shift control (1) and CTRL inputs are inactive.
This mode should be used to disable frequency shifting, or for calibration.
EXP – shifting takes place on an exponential scale, from +2 Hz to
+2 kHz, as marked on the Exponential scale, providing a 1 V/Octave shift
which can be controlled using the CTRL inputs (7).
5 – Gives a linear shift of +5 Hz CW or -5 Hz CCW.
50 – Gives a linear shift of +50 Hz CW or -50 Hz CCW.
500 – Gives a linear shift of +500 Hz CW or -500 Hz CCW.
5k – Gives a linear shift of +5 kHz CW or -5 kHz CCW.
SQUELCH THRESHOLD – use this control to suppress the output of the
frequency shifter when the input level falls below the desired threshold, from
0 dBu to -60 dBu. When the squelch circuit is passing a signal then the LED
above the control will be lit. The squelch control can be disabled by removing
the jumper between pins 1 and 2 of the 12 pin test header on the underside of
the circuit board (see below).
11
Quick Start Guide
