Technical data – Beyerdynamic SIR 320 User Manual

Page 9

Technical data

Complies with standards IEC 914 and IEC61603-3 (in normal operation)

Number of channels:

up to 32 (in dependence of type) regarding IEC 61603-2 and IEC 61603-7

Modulation:

Transmission frequencies:

55 kHz - 1335 kHz in 40 kHz pattern for OR - Ch31

Intermediate frequency:

455 kHz

Operating mode:

Superhet receiver with PLL Synthesizer

Angle of reception:

120° horizontal / 100° vertical

Frequency response:

125 - 8.000 Hz

Distortion factor:

< 2 %

Signal / Noise ratio:

> 55 dB

Headphone socket:

3,5mm (DIN 455838)

Headphone impedance:

32 - 600 Ohm

Operating voltage:

3.6 ... 4.5 Volts

Power supply:

3 x rechargeable batteries NiMH 1.2V / 750 mA/h (AAA)

or 3 x disposable batteries 1,5V (AAA)

Operating time

up to 75 hours (rechargeable batteries)

up to 120 hours (disposable batteries)

Display:

seven-segment 2 digit LCD (Liquid Crystal Display) back lighted

(white

text

black

ground)

Test functions:

Battery voltage and IR-field strength via LCD

Temperature range:

(operating) +10°C ... +40°C

(storage) -20°C ... +50°C

Humidity:

80%,

not

condensed

Size:

150 x 50 x 25 mm

Housing:

ABS-plastic,

grey

Weight:

approx.

150g

(incl.

batteries)