Bruel & Kjaer - 2693 Conditioning Amplifier  Specifications   Charge Input CONNECTOR: TNC (TNC to 10.32UNF adaptor JP-0162 included) GROUNDING: Single-ended or floating MAX. I ...

Read the full Tiiip

(Send your comment)

Bruel & Kjaer - 2693 Conditioning Amplifier  Specifications

 

Charge Input

CONNECTOR: TNC

(TNC to 10.32UNF adaptor JP-0162 included)

GROUNDING: Single-ended or floating

MAX. INPUT:

Differential Charge: 10 nC (peak); Type 2692-C/D: 100 nC (peak)

Common Mode Voltage: 4.2V (peak)

At gain ≥ 0.316 mV/pC (.10 dB gain with 1 nF transducer

capacitance)

INPUT PROTECTION:

Differential Charge: ≤300 nC (peak)

Common Mode Voltage: ≤15V (peak)

COMMON MODE REJECTION RATIO: >50 dB (typical)

(50 to 60Hz with 1 nF transducer capacitance)

AMPLIFIER GAIN:

0.1mV/pC to 10 V/pC (.20 to +80 dB gain with 1 nF transducer

capacity); Type 2692-C/D: 0.01 mV/pC to 10 V/pC (.40 to +80 dB

gain with 1 nF transducer capacity)

TRANSDUCER SENSITIVITY RANGE:

10.19 to 10.6 C/MU

(MU = mechanical units: m/s2; g, N, lb., Pa)

CALIBRATED OUTPUT:

Selectable in 10 dB steps. 100 dB attenuator range, 10.15 to

107 V/MU (Type 2692-C/D: Selectable in 10 dB steps. 120 dB

attenuator range, 10.16 to 107 V/MU)

}1% for 0°C ≤ Ta ≤ +40°C and }2% for

.10°C≤Ta ≤+55°C

Frequency range from 5 × fl to 0.2 × fu

fl = lower freq. limit: 0.1, 1.0 or 10 Hz

fu = upper freq. limit: 0.1, 1, 3, 10, 30 or 100 kHz

FREQUENCY RANGE (.10%):

Acceleration: 0.1Hz to 100 kHz (transducer cable length <10m);

Velocity (optional): 1.0Hz to 10 kHz

Displacement (optional): 1.0Hz to 1 kHz

LOW-PASS FILTER (.10%):

0.1, 1, 3, 10, 22.4, 30 or 100 kHz, attenuation slope 40 dB/decade

HIGH-PASS FILTER (.10%):

Acceleration: 0.1, 1.0 or 10 Hz; Type 2692-C/D: 0.1, 1 or 20 Hz

Velocity (optional): 1.0 or 10 Hz

Displacement (optional): 1.0 or 10 Hz

INHERENT NOISE (2 Hz to 22.4 kHz):

<5 fC referred to input, .10°C≤Ta ≤+40°C

<10 fC referred to input, 40°C≤Ta ≤+55°C

(amplifier sensitivity (>20 dB) with 1 nF transducer capacitance)

HARMONIC DISTORTION AND NOISE (2 Hz to 22.4 kHz, Qin

≤2 nCpeak, Vout ≤3.16V peak):

<0.003% for amplifier gain ≤0.1 V/pC

(<40 dB gain with 1 nF transducer capacitance)

ENVIRONMENTAL SUSCEPTIBILITY (referred to input):

Magnetic Field: <0.2 fC/(A/m)

Electromagnetic Field: <20 fC/(V/m) or <4 fC/V

Vibration (10 to 500Hz): <30 fC/(m/s2)

MOUNTED RESONANCE TESTING1: EP Patent 715.722, US

Patent 5.753.793

Mounted resonance testing of the accelerometer and cable

interconnection, controllable from front panel and

RS.232 interface

TEST TONE OSCILLATOR:

ω= 1000 rad/s (159.2Hz), sinusoidal

Test Level: 1mV to 10 V (}1%). Controllable from front panel and

RS.232 interface

Reference Tone: 1V (RMS), (}1%), 159.2Hz

RISE TIME: >7.5V/μs (100 kHz bandwidth)

CHANNEL TO CHANNEL PHASE-MATCH:

2.1° . 0.1° × (f/fl) from fl to 20 × fl

0.1° from 20 × fl to 0.1 × fu

(f/fu)° from 0.1(fu) to fu

fl: lower freq. limit: 10 Hz

fu: upper freq. limit: 0.1, 1, 3, 10, 30 or 100 kHz

OPTIONAL FILTERS:

Integration: Single and double

Type 2692-C: Single and double integration filters included

Type 2692-D: Single and double integration filters optional

Microphone Input

CONNECTOR: 7-pin LEMO

GROUNDING:

Outer shield grounded to chassis

INPUT IMPEDANCE:

1MΩ|| 300 pF (AC coupled)

MAX. INPUT: 31.6V (peak)

INPUT PROTECTION: ≤50 V (peak)

AMPLIFIER GAIN:

.20 to +60 dB (80 dB with reduced specs.)

TRANSDUCER SENSITIVITY RANGE:

10.12 to 103 V/MU

(MU = mechanical units: Pa, mm)

CALIBRATED OUTPUT:

Selectable in 10dB steps. 100 dB attenuator range, 10.15 to 107V/MU

(}0.1 dB for 0°C ≤ Ta ≤ +40°C and }0.2 dB for .10°C≤Ta ≤+55°C

Frequency range from 5 × fl to 0.2 × fu

fl = lower freq. limit: 0.1 or 20 Hz

fu = upper freq. limit: 0.1, 1, 3, 10, 22.4, 30 or 100 kHz)

POLARIZATION VOLTAGE (}0.5V or }0.25%):

0 or 200 V (all channels simultaneously selected, short-circuit

protected)

PREAMPLIFIER SUPPLY:

Fixed }14 V, }40 V or controlled automatically in accordance with

input range (short-circuit protected)

FREQUENCY RANGE (.1 dB):

0.1Hz to 100 kHz (gain ≤60 dB) (complies with IEC 1260 Class 0

and ANSI S1.11 Type 0.AA for fl = 0.1Hz and fu = 100 kHz)

HIGH-PASS FILTER (.1 dB):

0.1Hz, attenuation slope 40 dB/decade or

20 Hz, attenuation slope 80 dB/decade

LOW-PASS FILTER (.1 dB):

0.1, 1, 3, 10, 22.4, 30 or 100 kHz, attenuation slope 40 dB/decade

A-WEIGHTING FILTER:

Complies with IEC 61672.1

INHERENT NOISE (referred to input, gain >20 dB):

<2 μV A-weighted

HARMONIC DISTORTION AND NOISE (2Hz to 22.4 kHz, Vin

≤ 20V peak, Vout ≤ 3.16V peak):

<0.003% for amplifier gain ≤40 dB

ENVIRONMENTAL SUSCEPTIBILITY (referred to input):

Magnetic Field: <0.2 μV/(A/m)

Electromagnetic Field: <10 μV/(V/m) or <10 μV/V

Vibration (10 to 500 Hz): <2 μV/(m/s2)

CHARGE INJECTION CALIBRATION1:

Verification of the entire measurement set-up including the

microphone, preamplifier and connecting cable. Controllable from

front panel and RS.232 interface

Reference Tone: 1V (RMS) }1%, 1 kHz

OVERLOAD DETECTION:

Microphone preamplifier overload detection with respect to cable

length (3 to 1000 meter)

RISE TIME:

>7.5V/μs (100 kHz bandwidth)

CHANNEL TO CHANNEL PHASE-MATCH:

5.1° . 0.1° × (f/fl) from fl to 50 × fl (fl=0.1Hz)

2.1° . 0.1° × (f/fl) from fl to 20 × fl (fl=20Hz)

0.1° from 50× fl to 0.1 × fu (fl = 0.1Hz)

0.1° from 20 × fl to 0.1 × fu (fl = 20 Hz)

(f/fu)° from 0.1(fu) to fu

Where:

fu = upper frequency limit: 0.1, 1, 3, 10, 22.4, 30 or 100 kHz

OPTIONAL FILTERS:

A-, B-, C- and D-weighting (one module)

(complies with IEC 61672.1)

Intensity Input

Specifications as for microphone input, except when using the

.Intensity. filter.

CONNECTOR:

7-pin LEMO (two connectors on two input modules . adaptor

required)

CHANNEL TO CHANNEL PHASE-MATCH AND FREQUENCY

RESPONSE (with .Intensity. filter (20Hz HP/22.4 kHz LP, 40 dB/

decade):

Complies with IEC 61043 standard Class 1 and ANSI S1.9.1996

Class 1, with Brüel & Kjær sound intensity probes.

(Conditions: output sensitivity for the two channels must be equal.

Transducer sensitivity must be equal within 0.5 dB)

DeltaTron® Input

CONNECTOR: BNT

GROUNDING: Single-ended or floating

INPUT IMPEDANCE:

1MΩ || 100 pF (AC coupled)

MAX. INPUT:

Differential Voltage: ≤31.6V (peak)

Common Mode Voltage: 4.2V (peak)

INPUT PROTECTION:

Differential Voltage: ≤50 V (peak)

Common Mode Voltage: ≤15 V (peak)

COMMON MODE REJECTION RATIO:

50 dB (50 to 60 Hz) (typical)

AMPLIFIER GAIN:

.20 to +60 dB gain (80 dB with reduced specs.)

TRANSDUCER SENSITIVITY RANGE:

10.12 to 103 V/MU

(MU = mechanical units: m/s2, m/s, g, N, lb., Pa)

CALIBRATED OUTPUT

Selectable in 10 dB steps. 100 dB attenuator range, 10.16 to 107 V/

MU.

(}0.1 dB for 0°C ≤ Ta ≤ +40°C and }0.2 dB for .10°C≤Ta ≤+55°C

Frequency range from 5 × fl to 0.2 × fu

fl = lower frequency limit: 0.1, 1.0 or 10 Hz

fu = upper frequency limit: 0.1, 1, 3, 10, 22.4, 30 or 100 kHz)

CONSTANT CURRENT SUPPLY (}15%):

+4mA or +10mA with a +28V voltage source

Tacho Probe Supply:

+8 V DC at BNT inner shield (short-circuit protected)

FREQUENCY RANGE (.10%):

0.1Hz to 100 kHz (gain <60 dB)

attenuation slope 40 dB

HIGH-PASS FILTER (.10%):

0.1Hz or 1.0Hz (with attenuation slope 40 dB) or

10 Hz (with attenuation slope 60 dB/decade)

LOW-PASS FILTER (.10%):

0.1, 1, 3, 10, 22.4, 30 or 100 kHz

INHERENT NOISE (referred to input, gain >20 dB):

<2.4 μV A-weighted

<3.3 μV lin. 2Hz to 22.4kHz

HARMONIC DISTORTION AND NOISE (2 Hz to 22.4 kHz, Vin

≤ 20V peak, Vout ≤ 3.16V peak): <0.003% for amplifier gain ≤40 dB

RISE TIME:

>7.5V/μs (100 kHz bandwidth)

ENVIRONMENTAL SUSCEPTIBILITY (referred to input):

Magnetic Field: <0.2 μV/(A/m)

Electromagnetic Field: <3 μV/(V/m) or <3 μV/V

Vibration (10 to 500 Hz): <2 μV/(m/s2)

OVERLOAD DETECTION:

Evaluate