Ocean Insight OCEAN SR2, Installation And Operation Manual

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MNL-1029 Rev A
20
Since the integration is not predefined (user defined), the minimum integration time is no longer 1 µs. The minimum integration
effectively becomes the maximum busy time 1, t
BUSY1
, which is 218 µs. The user can still define an acquisition delay; however, the
minimum integration remains fixed. External Level Trigger timing parameters are described below.
Symbol Description
Time
Notes
min typ max
T0 External Level Trigger Start of Acquisition Cycle
t
TLPUL
External Level Trigger Pulse Width 218.03 µs -- 1.19 hours
30 ns + 218 µs
(Minimum, t
ACQDLY
= 0)
t
ETRGDLY
External Edge Trigger Delay -- -- 30 ns
t
ACQDLY
Acquisition Delay 0 µs -- 1.19 hours User specified, 1 µs resolution
t
BUSY1
Busy -- -- 1 µs Constant at 1 µs
t
INTEG
Integration Period 218 µs -- 1.19 hours
Integration period is equal to t
LPUL
–
t
ACQDLY
– 30 ns.
t
BUSY2
Busy -- -- -- Constant at 218 µs
t
SSDLY
Single Strobe Delay 0 µs -- 1.19 hours User specified, 1 µs resolution
t
SSH
Single Strobe High Time 0 µs -- 1.19 hours User specified, 1 µs resolution
t
CSPER
Continuous Strobe Period 0 µs -- 1.19 hours User specified, 1 µs resolution
t
CSOFF
Continuous Strobe Off Time 0 µs -- t
CSPER
The following timing diagram represents the acquisition process for an External Level trigger event.