National Instruments NI PCI-5114 用户手册

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Onboard Memory 
Size

8 MB per Channel 
Standard

8 megasamples 
per channel

—

64 MB per Channel 
Option 

64 megasamples 
per channel

256 MB per Channel 
Option 

256 megasamples 
per channel

Minimum Record 
Length

1 Sample

—

Number of 
Pretrigger Samples

Zero up to full Record Length

Single-record 
mode and 
multiple-record 
mode

Number of 
Posttrigger Samples

Zero up to full Record Length

Single-record 
mode and 
multiple-record 
mode

Maximum Number 
of Records in 
Onboard Memory

8 MB/channel 

 32,768

* It is possible 
to exceed these 
numbers if you 
fetch records while 
acquiring data. For 
more information, 
refer to the 
NI High-Speed 
Digitizers Help. 

64 MB/channel 

100,000* 

256 MB/channel 

100,000* 

Allocated Onboard 
Memory per Record

(Record Length 

× 1 byte/S) + 240 bytes, 

rounded up to next multiple of 128 bytes

or

256 bytes, whichever is greater

—