Specifications

15
c. COMMON
This is circuit
COMMON
from which all other inputs and outputs are referenced.
d. REMOTE
The scanned output from each filter channel is available at this terminal. Connection may
be made to the vertical axis of an oscilloscope for the remote display of the filtered signal
plus the wide band
SPL
channel. The
REMOTE
output is positive and varies from +2.3
volts to +6.6 volts for the 20dB range, or from +2.1 volts to +4.2 volts for the 10dB
range. The oscilloscope input must be
DC
coupled to display this signal.
e. SYNC
The
SYNC
output terminal provided a positive 14 volt, 1 millisecond square pulse to
start the oscilloscope's sweep for the remote display. The filter channels are scanned at
the rate of once every 30 milliseconds. The sweep rate of the oscilloscope should be
adjusted to give one full sweep at this rate.
f. NOISE OUT
The
NOISE OUT
provides the signal from the pink noise generator. The level of the
signal is set by the front panel control. (Pins
6
and 7 are connected to pins
2
and
3
of
front panel
XLR
connector).