PS Engineering PM1000
Contents
1. This is factory adjusted If your enter tainment does not mute try increasing the volume of the aircraft radios 2 4 PowerlTransmit indicator 6 When the PM1000II is operating the lamp in the center will glow green When either pilot pushes a radio microphone key push to talk or P T T the indicator will change to red signifying radio transmission The aircraft radio sidetone will be presented to the intercom and heard by the same people as the aircraft radio receiver audio Only the pilot pressing a P T T will be heard on the radio other micro phones will be inhibited 2 5 Fail safe 1 If any abnormal conditions occur such as a loss of radio communication bypass the PM1000II by placing it in the fail safe mode When the PM1000II is turned off either by the pilot volume control 1 or by pulling the intercom circuit breaker the unit automatically enters the fail safe mode In this mode the pilot microphone input is connected to the aircraft radio output and the aircraft radio phones input is connected to the pilot headphone output enabling pilot radio communication The copilot and passenger stations are inoperative PMI1000 Pilot Guide amp User Manual2. 6 x 14 cm Environmental and technical qualifications RTCA DO 160B DO 170 Temperature 20 C to 55 C Altitude 50 000 ft PM1000 Pilot Guide amp User Manual wa ENGINEERING NCORPORA Section Il OPERATION r GO COD nonono SS pwrrxme__ Fe 100010 DE CoPilot i50 A ALL ort Volume 2 saveict 5 Volume O Sq TO PM1000II with ISO ALL p n 11922 Pilot Volume Control Pilot Squelch Control Copilot Volume Control Copilot Squelch Control Intercom Mode Switch Power Transmit indicator Turn the PMIOOOII on by rotating pilot s volume control 1 This also en gages the automatic fail safe system The pilot s volume control does not control the volume of the aircraft radio allowing an additional degree of aircraft radio listening flexibility 2 1 Adjusting The Volume 1 3 The pilot s volume control knob 1 adjusts the loudness of the intercom and music for the pilot s headset only It has no effect on aircraft radio vol ume level The copilot s volume control 3 adjusts the volume for the co pilot In the 11920 PM1000II with Crew units the volume level for both pas sengers can be adjusted by a screwdriver adjusted potentiometer located on the left hand side of the intercom as viewed from the front It is possible to adjust the overall output power to the passenger headsets by changing this potentiometer Rotating the potentiometer counterclockwise increases the passenger volume 2 2 Squelch
3. Control 2 4 The PM100O0II provides individual VOX circuits for the pilot and copilot The ability to adjust the trip level of these VOX circuits squelch control PMI1000 Pilot Guide amp User Manual wa ENGINEERING NCORPUBALEL allows the use of dissimilar headsets without the frustration of clipping the first syllables The PM1000II has three squelch circuits one for the pilot copilot and one for the passengers With individual VOX circuits back ground noise is dramatically reduced With the engine running set the squelch control by slowly rotating the knob s 2 and 4 clockwise until you no longer hear the background noise in the earphones When the microphone is positioned properly near the lips normal speech levels should open the channel When you have stopped talking there is a delay of about one second before the channel closes This prevents squelch closure between words and helps eliminates choppy intercom conversations 2 3 Mode Selector 5 The center switch 5 is a three position mode control that allows the pilot to tailor the intercom function to suit flight conditions Regardless of con figuration the pilot will always hear the aircraft radio NOTE If there is a power failure to the PMIOOOII or if the power switch is turned off the copilot will not hear the aircraft radio Only the pilot is connected directly to the aircraft radio ISO Up Position The pilot is isolated from the intercom a
4. nd is con nected only to the aircraft radios He will hear the aircraft radio reception and sidetone during radio transmissions Copilot and passengers will hear themselves and music but not the aircraft radio traffic ALL Middle position All parties will hear the aircraft radio transmit sidetone from radio intercom and music However during any ICS or radio communications the music volume automatically mutes The music volume increases gradually back to the original level after communications have been completed Units without CREW mode part number 11922 have a bottom switch o INCORPORATED Pwr Xmt oti yy C Pilot ISO A ALL CREW Volume Sq O on Volume O savec G PMI1000II p n 11920 Front Panel Controls PM1000 Pilot Guide amp User Manual wa ENGINEERING NCORPUBALEL position This is the same as ALL mode CREW Down Position ONLY version with crew part number 11920 Pilot and copilot are connected on one intercom channel can hear aircraft radio and transmit sidetone The passengers are on a separate and inde pendent channel The pilot and copilot are connected to the aircraft radio and may listen to Music 1 Passengers can continue to communicate with themselves without disturbing the pilot and copilot and may listen to Mu sic 2 hae 2 3 1 Entertainment Mute Trip Level The entertainment mute trip level determines what volume the aircraft ra dio must be before the music mutes
5. wa ENGINEERING NCORPORA Section General Information 1 1 Introduction The PM1000 7 is an FAA TSO approved panel mounted 4 place inter com system ICS Please read this manual completely to become familiar with all the features This manual contains operational instructions for the following PS Engi neering units Model Description Part Number PM1000 7 4 place intercom system w Pilot ISO 11922 PM1000 7 Same as above w internal crew 11920 1 2 Description The PM1000 is a 4 place panel mounted intercom with individual vol ume and squelch controls for the pilot and copilot Both pilot and copilot have transmit capabilities over the radio The PM1000 allows only the person who presses their PTT to be heard over the aircraft radio If both pilot and copilot press the PTT at the same time the copilot will override Ideally suited for training environments Pilot regains priority by switching the unit off 1 3 Approval Basis The PM1000 7 part numbers 11920 and 11922 are FAA approved under TSO C50c 1 4 Specifications Input power 13 8 27 5 Volts DC Current Drain lt 250 mA 1 Amp Circuit breaker Headphone Impedance 150 1000 ohms typical Audio Distortion lt 10 75 mW into 150 Q load Aircraft Radio Impedance 1000 Q typical 3 dB Mic Frequency Response 350 Hz 6000 Hz 3 dB Music Frequency Response 200 Hz to 15 kHz Unit weight 12 Ounces 0 342 kg Dimensions 1 25 H x 2 60 W x 5 50 D 3 2 x 6
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