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M SERIES DAC
BASE UNIT AND MODULE OPERATION
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V77 OPERATION
GENERAL
The V77 ADM-1 may be operated as 8 differential or 16 single ended input channels.
The input source is an analog voltage signal which is sampled and digitized into a
data message. The data message is sent to a host communication module
automatically or upon request. The host communication module is the primary user
interface to the V77 ADM-1 which allows a host computer or terminal to change
configuration or transmit data commands and receive data messages.
Each data message may be presented in a hexadecimal, decimal, or voltage format
and will be preceded by the unit/module/channel number from which the data
message came. The data message may be optionally appended with a "real time"
Time Tag showing the date and time the data message was recorded. Data resolution
is 12 bits.
Data commands are used to instruct the V77 ADM-1 to perform various tasks that
pertain to data acquisition. These include calibration, buffer clearing, report a single
data message or all data messages in the receive buffer, and sample/report a single
data message on demand.
You have the choice of programming the V77 ADM-1 via verbose (menu-driven) or
non-verbose (dynamic) configuration mode. When using verbose configuration
mode, a series of menus will prompt you to enter the desired configuration
parameters. Non-verbose or dynamic configuration mode allows you to program
certain parameters of the V77 ADM-1 by downloading configuration commands.
USER-PROGRAMMABLE FEATURES
You may program the Sampling Setup, Reporting Setup, Channel Input Setup, and
enable/disable Dynamic Configuration on the V77 ADM-1.
SAMPLING SETUP
Sampling Setup allows you to program how the V77 ADM-1 takes samples of the
analog input voltage signals. The items you may program in the Sampling Setup
include Sampling Method, Sample Start Time, Sample Interval, Sample Rate, and
Number of Samples to Average.
SAMPLING METHOD