Chapter 5 Web-Based Operations
98 Lynx II DSA User's Manual - 7096089
No. of Channels
The Input size determines the amount of acquisition memory in the number of channels
that the Lynx II assigns to the currently selected Input number. The value can range
from 256 channels to 32768 channels. Each channel can store up to 2
32
-1 (approx.
4.29B) counts.
The Input Size represents the number of channels, or sequential bins, into which the
time-correlated data (based on the current dwell time) will be stored.
Dwell
Defines the length of time events are stored for each channel. The Lynx II supports a
dwell value ranging from 1 microsecond to 999 seconds.
Preset Options
The only Preset Option (other than None) is the number of sweeps to be acquired. The
value is defined by the Preset Sweeps.
Disc. Mode
Defines the discriminator mode. Note when set to TTL you must use the MCS BNC
input connector for MCS input. Otherwise, you must use the ENERGY BNC.
− MCS Fast Discriminator sees any counts converted by the MCA.
− TTL picks up the signals to be counted from the external connector.
− ROI counts only those events in a limited Region of Interest.
− Start Channel defines the start channel for ROI Disc Mode.
− End Channel defines the end channel for ROI Disc Mode. Note the maximum
value is defined by the PHA Input Size (also known as the PHA Conversion
Gain) and not the MCS Input Size.
The Advance tab describes the signals for the sweep and channel advance.
Figure 49: Advanced Acquisition Settings for Input 2