Description
The PM1000II, is an FAA-TSO approved, panel mounted, 4-place intercom system (ICS).
Description
The PM1000II is a 4-place, panel mounted intercom with individual volume and squelch controls for the pilot and copilot. The copilot’s squelch control adjusts the trip level of the copilot and passengers. A front panel mode switch allows the pilot to select multiple intercom configurations:
“ISO” mode isolates the pilot from the intercom and connects to the aircraft radio. The passengers can continue to communicate with each other and listen to entertainment without distracting the pilot. They do not hear radio communications.
“ALL” mode places all headsets on a party line. Each one hears aircraft radio, entertainment and can use the intercom.
“CREW” allows the pilot and copilot positions to hear the aircraft radios and use the intercom, while the rear passengers can have their own intercom conversation without disturbing the crew. This also activates music 2 input.
The PM1000II has an automatic fail-safe interconnect to the aircraft radio. If power to the intercom is disrupted, an internal relay will connect the pilot’s headset to the aircraft radio. This allows continuous radio communications. Note: The copilot will no longer hear aircraft radio when power is removed.
Additional
The 2-color LED shows green when power is on and red during radio transmissions. This functions as a stuck mic indicator.
An auxiliary input is provided, allowing the pilot, copilot and passengers the option to listen to music during flight. During intercom or aircraft radio activity, this music is automatically muted to allow communications without distraction. When the activity ceases, the Soft Mute circuit will gradually return the music to the original listening volume.
The “ISO” mode provides uninterrupted aircraft radio communications for the Pilot. Because the pilot’s intercom volume control does not affect the aircraft radio volume, it is possible to select various balances of volume level between the ICS and the aircraft radio while in the ALL mode. Reducing the intercom volume, the pilot places the aircraft radio in the foreground while the ICS is in the background.
Both pilot and copilot have transmit capabilities over the radio. The PM1000II 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.
Specification
- Input power: 13.8 – 27.5 Volts DC
- Current Drain: less than 250 mA (Externally fused at 1 Amp)
- Headphone Impedance: 150-1000 ohms typical
- Audio Distortion: less than 10% @ 75 mW into 150 ohms load
- Aircraft Radio Impedance: 1000 ohms 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 6.6 x 14 cm)
- Environmental and technical qualifications: RTCA DO-160B/DO-170
- Temperature -20oC to +55oC
- Altitude 50,000 ft
