Chapter 1 Introduction
6
Lynx DSA User's Manual - 9240227J
MCS acquisition always begins at spectrum channel #1 and progresses linearly
through the end of the spectrum, accumulating to the residual data from previous
sweeps.
MSS Mode
The MSS (Multispectral Scaling) mode, also called “ping-pong” mode,
alternately collects PHA data in two separate memory groups based on a preset
condition, collecting many spectra with extremely low latency between
acquisitions. Spectra are stored internally along with their acquisition times, until
requested and/or consumed by the client application.
Input #1 must be set for MSS mode. Acquisition is automatically directed into
both memory groups.
In MSS mode, the Lynx can be set to automatically stream (or push) data out to
listening clients at the completion of each acquisition cycle, or can be set to
concatenate spectra’s in its internal buffers until requested by the client, or
buffers run out. If data is not requested and buffers run out, the current
acquisition cycle will be extended to prevent data loss.
If using MSS mode through a custom application, please see important note in
Using the Programming Libraries
on page 7.
List Modes
The Lynx supports Standard List Mode (LIST), and Time-Stamped List Mode
(TLIST). Input #1 must be set to the appropriate mode to enable List mode.
In Standard List mode, each energy event is digitized by the PHA digital
processor and temporarily stored in buffer memory, one word per event, until
requested and/or consumed by the client application.
Time-Stamped List Mode is similar to Standard List Mode, however each energy
event is tagged with the time of arrival. Both the energy and time are temporarily
stored in buffer memory, one word per event, until requested and/or consumed
by the client application. Resolution of the time stamp can be set to 100 or 1000
nanoseconds.
List data stored by the Lynx in its temporary buffers can be read using the Lynx’s
Programming Libraries and energy and time-correlated spectra can then be
created from the data by custom applications.
In List Mode, the Lynx can be set to automatically stream (or push) data out to
listening clients at fixed periodic intervals, or can be set to retain list data in its
internal buffers until requested by the client. If data is not requested and buffers
run out, eventually new data will be lost.
If using List or time-stamped List mode through a custom application, please see
important note in
Using the Programming Libraries
on page 7.
