B&K 2250 Light Manual do Utilizador descarregar pdf (Página 54)

CHAPTER 4

Specifications

4.13 Electrical Input to Connector Panel of Type 2250

4.13.1 Input Socket (Rear Socket)

Triaxial Lemo socket used for Direct input as well as CCLD input.

Direct Input:

Max. input level: ±14.14 V

Peak

, no damage for signals up to ±20 V

Peak

Input impedance: > 1 MΩ

CCLD Input:

Max. input level: ±7.07 V

Peak

(no indication for violation of this level), no damage for signals in the

range –10 to +25 V

CCLD current: 4 mA @ 25°C

4.13.2 Trigger Socket

Triaxial Lemo socket:

Input Range: ±20 V

Peak

, no damage for signals up to ±50 V

Peak

Supply for Remote Control Switch: 5 V through Silicium diode and 5 k resistor

Input impedance: > 1 MΩ

4.14 Electrical Output from Type 2250

4.14.1 Output Socket

Triaxial Lemo socket:

Output Signal: Input conditioned; A-, C-, or Z-weighted; covers the nominal range 20 to 140 dB

Gain Adjustment: –80 to +60dB

Max. peak output level: ±4.46 V

Output impedance: 50 Ω

Min. load impedance: 15 kΩ ⎟⎟ 1 nF for < 0.2 dB attenuation from DC to 20 kHz, short-circuit

proof without affecting the measurement results

Max DC offset: ±15 mV

4.14.2 Headphones Socket

Stereo MiniJack socket:

Output Signal: Input signal can be monitored using this socket with headphones/earphones

Gain Adjustment: –80 to +60dB

Max. peak output voltage: ±1.4 V

Output impedance: 2.2 Ω in each channel, short-circuit proof without affecting the measurement

results

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B&K 2250 Light Manual do Utilizador Página 54