Canberra Lynx - Acquisition Device Outputs

SYNC – Synchronization input/output signal connector; BNC. For multiple DSAs
running acquisitions. TTL compatible; Signal operation and direction are software
selectable as master or slave.
PHA Mode: Sync is used only when operating in MSS mode.
The Master produces a sync signal at the programmed rate.
The Slave synchronizes the acquisition to the sync signal.
List Mode: Master instrument: Signal is an output and provides an output
pulse every time the DSA internal 1 µs time base timer overflows.
Pulse width >20 ns.
Slave mode: Signal is an input. Each time the signal
pulses >20 ns, then a 1 µs internal time base timer will reset.
GENERAL PURPOSE INPUTS/OUTPUTS (GP I/O) – Buffered input/output sig
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nal connectors; three BNCs. For connections to processing electronics with TTL com
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patible signals. GPIO3 is used to receive the Test Pulser signal (if enabled).
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 recon-
structed energy shaper signal, and it may be observed by connecting it to an external
oscilloscope. The signal range is ±4 V.
ICR (Incoming Count Rate) – Fast discriminator output connector; BNC. Produces
a positive pulse ~50 ns wide for each incoming event above the instrument's threshold
setting. TTL compatible.
CHANGER ADV – Sample Changer Advance output connector; BNC. TTL compati
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ble; Software selectable polarity. Pulses for ~140 ms for each sample advance com
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mand the instrument receives.
SCA – Single Channel Analyzer output connector; BNC. Pulses for each event
with an energy between the upper and lower level discriminators.
PREAMP POWER – Preamp power connector, 9-pin female D-connector.
+24V – 50 mA +12V – 100 mA
–24V – 50 mA –12V – 100 mA
Auxiliary power for electrical cooler, etc; jumper enabled (default disabled).
Pin for NAID Thermistor Monitor In (which is pulled up to 5 V using 1% resistor).
User’s Manual 147
Acquisition Device Outputs