Teledyne SP Devices ADQ7DC, Manual

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19-2233 PC2
2019-02-01
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ADQ7DC Manual
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2.
DisArmTrigger
3.
SetTriggerMode
(“software trigger”)
4.
ArmTrigger
5.
SWTrig
6. Read data and analyze the situation
4.7 External Trigger Inputs
An external trigger is a dedicated signal on a dedicated input to the ADQ. There are several inputs for
external trigger,
Table 3 .
4.7.1 External trigger TRIG front panel connector
The block diagram for the TRIG is shown in Figure 11 and related parameters are listed in Table 3 . The
user can control the external trigger function for adapting it to the system in the following ways:
•
The input impedance can be set in 50

(default) or high impedance mode, see Section 4.7.3 .
• Configure the threshold level.
• Set the trigger edge to rising or falling to adjust to the polarity of the trigger signal.
CONNECTOR DESCRIPTION TIME
RESOLUTION TOTAL
JITTER IMPEDANCE TRIG
LEVEL REF
TRIG External trigger on
front panel. 50 ps 28 ps 50

/ 500

SW contr. 4.7.1
SYNC Sync signal on front
panel. 3.2 ns 0.9 ns 50

/ 500

SW contr. 4.7.3
STARB Backplane trigger in
PXIe systems.
Requires trigger timing
card. 3.2 ns 0.9 ns PXIe standard PXIe
standard 4.8.1
MLVDS Backplane trigger in
MVLDS systems. 3.2 ns 0.9 ns MLVDS.4
standard MLVDS.4
standard 4.8.2
Table 3: External trigger inputs.
# DESCRIPTION USER COMMAND REF
a The input is available on an SMA connector on the front panel.
b The input impedance can be set as 50

(default) or high
impedance 500

.
SetTriggerInputImpedance 4.7.3
c The trigger threshold is 0.5 V (default) and user-controlled. SetExtTrigThreshold
d High speed comparator.
e Select rising or falling edge. SetExternTrigEdge
Figure 11: External trigger on front panel.
*+,
(-
* # . /
01 01 01 01 01
+- #