RTS RMS300 Specifiche Scaricare il pdf (Pagina 5)

Specifications

FIGURE 1. SPK300L Block Diagram

Audio Line

Voltage

1 volt, peak (0 dBm voltage-equivalent)

Average

Speech Level

Range

-20 dBV to -10 dBV

Absolute

Maximum

Speech Level

3 volts, peak (linear limit)

Audio Line

Impedance,

Nominal

200 50 ohms, 75 Hz to 20 kHz

System will continue to operate from 50 ohms to 300

ohms.

SYSTEM DC CURRENT

Nominal 32 volts DC

Operational

Range

18 to 35 volts DC

Steady state

without

damage

-1.5 volts to 36 volts DC

Transient 200 volts, 8 milliseconds or less (after this time, power

supply and user station fuses will open).

System DC

Current

Quiescent

(per station)

10 to 40 milliamps

Dynamic (per

station)

50 milliamps (w/25 ohm headphones)

70 milliamps (w/25 ohm headphones and lights)

100 milliamps (w/8 ohm speaker)

Start-Up

Current

1.25 amperes, 50 units, all kinds

Fault Current 4.0 amperes, power supply at voltage >12 volts

1.0 amperes, power supply at voltage <12 volts

OPERATING DISTANCES

Maximum DC

limit

5,000 ft distance along cable, power supply to single

station #22 gauge wire - DC voltage drop limitation.

Maximum AC

limit

10,000 ft. dry pair, power supply at each end, #22 gauge

wire

System

Capacitance

0.3 microgarads (cumulative effect of 10,000 ft. of

maximum cable at 30 picofarads/foot)

USER STATIONS SPECIFICATIONS

Input DC

voltage

20 to 35 volts DC, operating from -200 to +36 volts DC

without damage.

DC Current Quiescent, 10 to 40 milliamps

50 milliamps, typical (w/25 ohms headphones)

75 milliamps, typical (w/25 ohms headphones + lights)

100 milliamps, typical (w/8 ohm speaker)

Impedance

Across Line

10,000 ohms typical; 2,000 ohms worst case dynamic

operation

Ambient

Temperature

Range

Operating 0° C to 60° C (0° F to 140° F)

Storage -55° C to 125° C (-67° F to 257° F)

Noise

Contribution

to 200 ohm

Line

One unit: -75 dBu

Ten unit: -67 dBu

MICROPHONE PREAMPLIFIER

Imput

Impedance *

470 ohms

Source

Impedance*

200 ohms, nominal

Maximum

Input Level

150 millivolts

Voltage Gain 54 dB

Frequency

Response

100 Hz to 10,000 Hz, 3 dB

1 2 3 4 5 6 7 8 9 10 ... 37 38

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RTS RMS300 Specifiche Pagina 5

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