2264ALB Limiter / Compressor
Issue 1
Limiter & Compressor in combination
When both of the
LIMIT
and
COMPRESS
switches are set to
IN
, the
sidechains controlling limiting and compressing will be operative.
Under these conditions, the compressor is effective below +8dBm only,
because at this point, the limiting action will take over complete control.
BYPASS Switch
When the
BYPASS
switch is set to the
IN
position, this effectively joins
the input and the output together, with the unit out of circuit.
NB:
When the source from which the instrument is fed has a significant
impedance, the output level may change when the
BYPASSS
key is
operated, particularly if the output circuit is terminated.
This effect arises because the unit constitutes a buffer amplifier having a
high input and low output impedance.
The limiter / compressor may be used as a linear amplifier providing both
the
LIMIT
and
COMPRESS
switches are set to
OUT.
LINK
Enables the control voltage to be derived either internally or can be
externally connected in conjunction with other 2264A LB units via the
Lunchbox
TM
pin 6 (“525”) buss.
When the LINK mode is engaged and the associated LED lit the control
voltage is sourced from the external buss. When the LED is off the
internal control voltage is selected. When two or more units are assigned
to this common buss, then it is the loudest signal in this group that causes
all compressors in that group to action.
When using the 2264A LB in LINK mode there can be no other
units attached to the pin 6 (“525”) buss apart from other 2264A
LB units.
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