PS Engineering PCD7100, Installation And Operation Manual, Page: 14 / 25

PS Engineering
PCD7100 Series Audio Selector Panel and Intercom System
Installation and Operator’s Manual
Table 3-1 Mic Muff ® Part Numbers
Manufacturer Model Mic Muff® Part
Number
Bose Dynamic
Electret
M87 Dynamic
90010
90015
90020
David Clark H10-30
H10-20, H10-40
H10-13.4 90010
90015
90015
Lightspeed 15K & 20K 90015
Peltor 7003
7004
90010
90015
Pilot 11-20 & 11-90 90015
Sennheiser 90015
Telex Airman 750
AIR3000
90015
90010
3.3.3 Music 1 and Soft Mute Control
The right-side volume knob controls the loudness of the internal CD player.
The volume knob controls the music volume only, it has no effect on the intercom or radio volume, or the
secondary music input level.
This knob is also the Soft Mute control for the CD player. Normally, the music is instantly muted during
radio or intercom conversation, and returns gradually to full volume when conversation stops. Pushing the
knob once will inhibit the soft mute, enabling a “Karoake” mode, where the music remains at he normal
level for a sing-along. Push again to return to a soft muting mode.
3.3.3.1 Mono headsets in Stereo Installation
Plugging a mono headset into the pilot or copilot jacks has no effect other than there will be no stereo left
and right separation. Since all passenger headsets are connected in parallel, if a monaural headset is
plugged in to a PCD7100 Stereo installation, one channel will be shorted. Although no damage to the unit
will occur, all stereo-equipped passengers will lose one channel. PS Engineering modifies headsets to add
stereo capability, using high-fidelity speakers. Contact factory for details (865-988-9800 or www.ps-
engineering.com).
3.3.4 Intercom Modes
On the left side of the intercom-versions is a 3-position mode switch that allows the pilot to tailor the inter-
com function to best meet the current cockpit situation.
I
SO
: (Up Position): The pilot is isolated from the intercom and is connected only to the aircraft radio sys-
tem. He will hear the aircraft radio reception (and sidetone during radio transmissions). Copilot and pas-
sengers will hear intercom and CD player. Neither will hear aircraft radio receptions or pilot transmissions.
200-971-0005 Page 3-2 Rev. 5, Dec. 2002