Manual SmartPicker AOM Rev. A ENG
LaCoSys Nov 2017
-10-
For monitoring the AOM Driver Signal is duplicated on this port.
The AOM-Monitor output is optimized for an output impedance of 50
Ω.
Shortening the output may
lead to irreparable device damage.
The AOM-Monitor output is optimized for an output impedance of 50
Ω
. For other output
impedance values the voltages are not correct.
3.4
GATE-INPUT
Input
Connector:
SMA(f)
Voltage:
TTL/LVTTL
Frequency:
< 100 MHz
Input impedance:
50
Ω
Minimum pulse width: 100 ns
The GATE-INPUT provide a logical AND-Function for the AOM-OUTPUT.
Truth table:
Input
HIGH
AOM
–
OUTPUT DIVIDED PULSES
LOW
AOM - OUTPUT BLOCKED
3.5
PHOTODIODE INPUT (TRIGGER-IN)
Input (optical)
Connector:
FC (f)
Input Power:
max. 10mW (cw)
Pulse Repetition Rate: max. 200 MHz
An optical pulse at the Trigger input increases a counter until a software pre-set value is reached. Then a TTL-
pulse is emitted at the AOM-output. The AOM-output pulse will have the pulse width and delay which was
pre-set using the software. The counter will be set back and counts again following the next Trigger input
pulses.
3.6
PHOTODIODE MONITOR OUTPUT
Output
Connector:
SMA(f)
Voltage:
Pulses < 2Vpp
Current:
± 100 mA
T
Rise
/ T
Fall
:
< 1.5 ns
