Measurement Computing DBK Part 2 - Manual (Page 96)

DBK48, pg. 16 967792 8B Isolated Signal Conditioning Module
Specifications – DBK48
Name/Function: DBK48, 16-slot Multi-Purpose Isolated Signal Conditioning Module
Operating Environment:
Temperature: -30°C to 70°C
Relative Humidity: 95% RH, non-condensing
Connectors:
System Connector: DB37 male, mates with P1 connector on primary acquisition device ( Note 1 )
Signal Connector: DB25, 5V output signals from the 8B modules
Power Connectors: Two DIN5 connectors; “Power In” and “Power Out” for daisy-chaining
Input Connections:
8 sets of removable screw terminal blocks, each with 6 connection points as follows:
1
st
channel voltage in (+V in, -V in)
1
st
channel excitation (+E, -E) ( Note 2)
2
nd
channel voltage in (+V in, -V in)
Shunt-Resistor Socket: R0 through R15, plug-in resistor sockets.
One socket per channel for current loop inputs.
Cold-Junction Sensor: Enabled or disabled per channel via jumpers JP0 through JP15.
8B Module Capacity:
o Up to 16 voltage input
o Up to 16 thermocouple
o Up to 8 modules which require excitation; i.e.
strain gauge, potentiometer, RTD
See latest catalog or contact your sales representative in regard to
the types of 8B Modules available for your application.
Power Requirements: 10 to 30 VDC; or 120 VAC with AC-to-DC adapter
With 16 thermocouple-type modules (0.03 amps each):
10 VDC @ 0.30 A
15 VDC @ 0.20 A
25 VDC @ 0.12 A
With 8 strain-gage-type modules (0.2 amps each):
10 VDC @ 1.000 A
15 VDC @ 0.667 A
25 VDC @ 0.400 A
Power Consumption: 750 mW from P1, typical
(±15V @ 25mA)
Channel-to-Channel Settling: ±0.05%, typical at 200kHz; ±0.025%, typical at 100kHz
DC Input Fuse: 2 Amp, Mini ATO Fuse, FU-8-2 (Littelfuse #297-002); at board location F3
Isolation
Input Power to System: 250 VDC
Signal Inputs to System: 250 VDC
Input Channel-to-Channel: 250 VDC
Dimensions: 285 mm W × 220 mm D × 45 mm H (11” x 8.5” × 1.75”)
Weight: 1.13 kg (2.5 lb) with no modules installed
Note 1: If attachment to the primary device is through a 100-pin P4 connector, a DBK200 series adapter must be used to
obtain the mating P1 connector.
Note 2: Input devices that require excitation can only be connected to the following channels:
0, 2, 4, 6, 8, 10, 12, 14. The odd-numbered channels do not connect to excitation.