Measurement Computing DBK Part 2 - Manual (Page 105)

DBK53
and
DBK54
16-Channel Analog Input Multiplexing Modules
DBK53 – Low Gain Programmable Module
DBK54 – High Gain Programmable Module
Overview …… 1
Hardware Setup …… 2
Differential Mode …… 2
Single-Ended Mode …… 3
Module Connection …… 3
Module Configuration …… 3
DaqBook/100 Series & /200 Series and DaqBoard [ISA type] Configuration …… 4
DaqBook/2000 Series and DaqBoard/2000 Series Configuration …… 4
Software Setup …… 4
DBK53 and DBK54 – Specifications …… 5
Reference Notes:
o
Chapter 2 includes pinouts for P1, P2, P3, and P4. Refer to pinouts applicable to your
system, as needed.
o
In regard to calculating system power requirements, refer to DBK Basics located near
the front of this manual.
Overview
DaqView Users: When a DBK53 or DBK54 is used with a /2000 Series Device, the Internal
Clock Speed should be set to 100 kHz as described in Chapter DBK Setup in DaqView.
Except for their gain ranges, the DBK53 (low gain) and DBK54 (high gain) are similar. Both:
• Have 16 channels of differential or single-ended analog inputs. Up to 16 modules can attach
to one LogBook or Daq Device for a maximum of 256 single-ended or differential inputs.
• Are based on the DBK12 and DBK13 multiplexer cards.
• Are fully enclosed modules with easy user connection using BNC-type connectors and an
analog common pin jack.
• Use power via the P1 connection from the LogBook or Daq Device or expansion
module/power supply.
• Use one of the LogBook’s or Daq Device’s 16 analog input channels via the P1 connection to
measure the multiplexed output. Both modules receive channel-selection and gain-selection
programming via digital signals via P1. The LogBook’s/Daq Device’s 512 location scan
sequencer can directly program the expansion modules to scan external signals at the same
10 µs/channel rate as on-board channels. (The time skew between channels is constant.)
The amplification gains for each module are:
• The DBK53 has 4 gain ranges of ×1, ×2, ×4, and ×8 that are scan-programmable per channel.
These gains can be combined with the standard gains of ×1, ×2, ×4, and ×8 for net gains of
×1, ×2, ×4, ×8, ×16, ×32, and ×64.
DBK Option Cards and Modules 989594 DBK53 and DBK54, pg. 1
• The DBK54 has 4 gain ranges of ×1, ×10, ×100 and ×1000 that are scan-programmable per
channel. These gains can be combined with the standard gains of ×1, ×2, ×4, and ×8 for net
gains of ×1, ×2, ×4, ×10, ×20, ×40, ×80, ×100, ×200, ×400, ×800, ×1000, ×2000, ×4000, and
×8000.