Measurement-computing DaqBoard-ISA Instrukcja Użytkownika Pobierz pdf (Strona 38)

pg. 10, DBK Basics

02-13-02

Daq Systems

DBK30A

module - provides power at 14 and 28 VDC with a rated capacity of 3.4 A-hr @ 14 VDC.

The DBK30A’s 28 V output will power 4 to 20 mA transducers.

The module’s rechargeable power supply can power

DBK modules in situations where AC mains are not available.

Note

: Some transducers (e.g., 2-wire 4-20 mA transmitters, bridge-configured sensors, etc) require an

excitation voltage in order to work properly. The DBK30A supplies 14 and 28 VDC. Consult

transducer documentation before applying power.

DBK32A

- provides ±15 VDC @ 500 mA.

DBK33

- provides ±15 VDC @ 250 mA and +5 VDC @ 1000 mA.

The DBK32A and DBK33 power cards attach directly to the P1 analog expansion bus where they supply power

to DBK analog expansion cards. The DBK32A and the DBK33 can be powered from an included AC adapter,

an optional DBK30A battery module, or from a +10 to +20 VDC source such as a car battery.

When installed in a DBK10

three-slot expansion chassis, the DBK32A or DBK33 supplies power to

the analog DBK [that is to receive power] via a CA-37-x cable.

If used with the DBK41

ten-slot expansion enclosure, the DBK32A or DBK33 installs into one of the analog

expansion slots on the DBK41’s backplane. A power card in any DBK41slot (other than the leftmost, when

viewed from the rear) will power the other cards that are connected to the DBK41’s backplane.

&$87,21

If using a DBK32A or a DBK33 with a DaqBook or DaqBoard [ISA type], you must

entirely remove the shunt jumpers from JP1. Failure to do so will result in damage to the

8254 timer chip. Refer to the power card document modules and to the Daq device

Hardware sections of the DaqBook and DaqBoard [ISA] user’s manuals for JP1 location

and configuration.

DBK34

module – provides 12 or 24 VDC with a 5.0 or 2.5 A-hr capacity (respectively). This module is an

Uninterruptable Power Supply (UPS) that can be used for in-vehicle testing where the vehicle’s electrical

system will not affect acquisition device power during starter-current surge, or power-off.

DBK34A

module – provides 12 or 24 VDC with a 5.0 or 2.5 A-hr capacity (respectively). This device is

classified as a UPS / Battery module. It is an improved version of the earlier DBK34. Like the DBK34, the

DBK34A can be used for in-vehicle testing where the vehicle’s electrical system will not affect acquisition

device power during power during starter-current surge, or power-off.

1 2 ... 33 34 35 36 37 38 39 40 41 42 43 44 45 46

Brak uwag

Measurement-computing DaqBoard-ISA Instrukcja Użytkownika Strona 38