16-channel Conditioning Amplifier Type 2694 –
User Manual
28
Accuracy:
±
0.1 dB. All gain-steps @ 1 kHz, typically
±
0.05 dB
ENVIRONMENTAL SUSCEPTIBILITY (REFERRED TO
OUTPUT AT 40 dB GAIN)
Magnetic Field: < 10
µ
V/(A/m)
Electromagnetic Field (measured with LK0013 on
cable):
Radiated < 10 mV @ 10 V/m
Conducted < 200 mV @ 10 V (floating input)
Conducted < 2 mV @ 10 V (single-ended)
Vibration (10 to 500 Hz): < 100
µ
V/(m/s
2
)
Transducer Testing*: Transducer voltage overload ~
failure in transducer or in the cables between 2694
and transducer.
Channel Separation: >100 dB @ 1 kHz
ANALOGUE OUTPUT
Connector: 50 pol. sub-D
Connector Multiplexed Output: BNC
Grounding: Single-ended
Output Impedance: 50
Ω
// 500 pF
Maximum Output: = 20 Vpp (without clipping)
Maximum DC Offset: <
±
10 mV (typical <
±
2 mV)
Output Current: >10 mA rms
Output Drive Capacity: 100 m of cable length
(100 pF/m) to 20 kHz; 1000 m of cable length
(100 pF/m) to 2 kHz
POWER SUPPLY
External DC Power Input: Complies with ISO 7637
−
1(12 V) and ISO 7637
−
2 (24 V)
Input Range: 10 to 33 V DC
Mains Supply: Supported via Mains Adaptor
ZG 0400 (included with 2694) 90
−
264 V AC, 40
−
65 Hz
Max. Floating Voltage:
±10
V between chassis and
external power supply ground
Always Power-on Mode: 2694 powers up as soon
as electrical supply is selected
Switchable Power-on Mode: 2694 can be powered
on and off either manually (using the on/off
button), or via a command over the RS
−
232 cable
Power Consumption: 18 to 30 W (depending on
input voltage and device configuration)
DIGITAL CONTROL INTERFACE
Serial Interface: RS
−
232
Computer Control: All functions are controlled via
the RS
−
232 interface. You can "daisy-chain" up to
16 units on each COM port
Support of Transducers with TEDS according to
IEEE P1451.4:
Type 2694 can on request (via RS
−
232) read
Serial Number, Transducer Type and Sensitivity from
all relevant transducer types designed in
accordance with the IEEE P1451.4. There is also
implemented a transparent protocol option that
makes it possible to collect the whole contents of
the TEDS. TEDS have a minimum working range of
100 m cable length and can endure a working
temperature of up to 125
°
C.
DIMENSIONS AND WEIGHT
The members of the 2694 family are all designed
to fit in a 19
″
rack and use only 1 Unit in height.
All connectors are placed on the front panel.
The overall dimensions are:
Height: 43.6 mm (1.7
″
)
Width: 449 mm (17.7
″
)
Depth: 254 mm (10.0
″
)
Weight: 2.1 kg (4.6 lb)
Ordering Information
Types 2694 A, B, C, D 16-channel DeltaTron
Conditioning Amplifier Range of Instruments
include the following accessories:
ZG 0426
Mains Adaptor 90
−
264 V AC
BZ 5291
Control Software
AO 1440
RS
−
232 Interface Cables
Optional Accessories:
KK 0049
Combination frame (19
″
rack)
AO 0581
Break-out cable 1.5 m 50-pin sub-D
to 17 BNC
KS 0046
19
″
Rack Mounting Kit
ZE 0847
Single and double integration filter
ZE 0848
A-, B-, C-, D-weighting filters
WH 3278
900 to 1100 Hz band pass filter
WH 3206
Whole body vibration X, Y and Z-
direction filter
LK 0013
Ferrite Clamp
Brüel & Kjær reserves the right to change specifications and accessories without notice
*Not available with version 2694 B
BE164411.book Page 28 Friday, May 18, 2001 11:51 AM
