Chapter 5 Web-Based Operations
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Lynx DSA User's Manual - 9240227J
SYNC
Synchronization input/output signal connector, BNC. Can be used to synchronize
acquisitions in multiple Lynx applications. TTL compatible; Signal operation and
direction are software selectable as Master or Slave.
•
PHA/DLFC/MCS/MSS modes – The Master produces a sync signal at the
programmed rate. The Slave synchronizes the acquisition to the sync signal.
•
List and Time-stamped List mode – Master instrument: Signal is an output
and provides an output pulse every time the Lynx’s internal 1
µ
s time base
timer overflows. Pulse width >100 ns. Slave mode: Signal is an input. Each
time the signal pulses >25 ns, the 1
µ
s internal time base timer will reset.
GENERAL PURPOSE INPUTS/OUTPUTS (GP I/O PORTS)
Buffered input/output signal connectors, three BNC’s. For connections to processing
electronics with TTL compatible signals.
•
GP I/O ports 1 and 2 are configured as counter inputs for external TTL
signals to Auxiliary Counters 1 and 2 respectively. Minimum pulse width is
25 ns; maximum input rate is 20 MHz.
•
GP I/O 3 by default provides ACQ OUT signal to drive lamp drivers. It can
also be used to receive the Test Pulser signal (if enabled) into the auxiliary
counters.
DC POWER IN
12 V (10–16 V) DC power jack; mechanically lockable to prevent accidental
disconnection. Current 1.0 A, max.
Acquisition Device Outputs
MONITOR OUT
Shaper monitor output connector, BNC. This signal is the reconstructed energy
shaper signal, and it may be observed by connecting it to an external oscilloscope.
The signal range is
±
2 V.
ICR (INCOMING COUNT RATE)
Fast discriminator output connector, BNC. TTL compatible. Produces a positive
pulse 100 ns wide for each incoming event above the instrument’s Fast threshold
setting.
CHANGER ADV
Sample Changer Advance output connector, BNC. TTL compatible; software
selectable polarity for active-high or active-low. Pulses for
∼
150 ms for each sample
advance command the instrument receives.
SCA
Single Channel Analyzer output connector, BNC. Pulses for each event with an
energy between the lower and upper level discriminators.
