Rane PE 17 (1993 version) - Manual (Page 2)

Manual-2
FRONT PANEL DESCRIPTION
ቢ OVERLOAD indicator: This red LED illuminates whenever the signal level at any of five critical nodes comes within 3-4
dB of clipping.
ባ Overall BYPASS switch & indicator: Engaging this pushbutton energizes the Bypass relay. This provides a complete
hard-wire Bypass of the PE 17 with no active electronics in the signal path. A red LED indicates the unit is in the BYPASS
mode. In the out (LED off) position, the Input is routed through the active electronics. The Bypass relay is wired such that
upon power failure it reverts to the BYPASS condition, thus providing a “fail-safe” feature.
ቤ IN & OUT GAIN controls: set the relative IN and OUT gain structures. The range of each is ±12 dB; however, note that
the labeling is opposite to each other, e.g., the top of the IN control reads +12 dB while the top of the OUT control reads -12
dB. Configured this way, whenever they are held and moved together the overall gain through the PE 17 stays at unity.
Positioning these controls (together) as far toward the top of the panel as possible (without lighting the OL indicator) yields
the best signal-to-noise performance.
ብ LOW & HIGH CUT FILTER controls: set the corner frequencies of the band limiting filters. The frequencies shown
represent the -3 dB points for each filter. When the sliders are located at their bottom-most positions, the filters are at their
lowest and highest extremes and thus, effectively bypassed.
ቦ FILTER LEVEL control: The center detent position guarantees flat response through the respective filter due to its
grounded center-tap design. Full clockwise rotation yields 12 dB of boost, while full counterclockwise rotation gives you
15 dB of cut.
ቧ FREQUENCY MULTIPLIER switch: The markings on this three position slide switch indicate the factor by which the
calibrations of the Frequency Sweep control (7) are multiplied. For instance, if the range switch is in the “x0.1” position and
the FREQ knob is at “460,” then the actual center frequency of the filter is 46 Hz. Operation of this switch in conjunction
with the FREQ control yields a range of 10 Hz to 20 kHz for each band.
ቨ FREQUENCY sweep control: increases the center Frequency of the filter band as it is turned clockwise. It is calibrated
from “100” to “2k.” The exact Frequency is determined by multiplying the value indicated by the Frequency Range switch
(6) setting.
ቩ Individual band BYPASS switch & indicator: Each of the five filter BYPASS switches disables the respective filter,
providing instant comparison between flat response and equalized response. The red LED illuminates when the band is in
the BYPASS mode.
ቪ BANDWIDTH control (Q): Full counterclockwise rotation yields a Bandwidth of 1/30 octave (Q=43) in the respective
filter, while full clockwise rotation gives a 2.0 octave (Q=0.67) Bandwidth.
ቫ POWER indicator: When this yellow LED is lit, the unit is ready to command.