VXI Technology, Inc.
Write 0x0D40 @ Base address + 0xC00062
Method 2: Make one 32 bits write.
Write 0x00030D40 @ Base address + 0xC00060
Example 3: Setting Channel 2 to Pre-acquire 100,000 Samples
The acquisition of samples starts when a trigger point is met or when a trigger is forced by setting the corresponding Force bit. However, samples can be collected before the occurrence of the trigger point. These samples are called
In hexadecimal format, 100,000 corresponds to 0x186A0. The
Method 1: Make two 16 bits writes.
Write 0x0001 @ Base address + 0xC00064
Write 0x86A0 @ Base address + 0xC00066
| Method 2: Make one 32 bits write. |
| Write 0x000186A0 @ Base address + 0xC00064 |
| The total number of samples acquired is set by the Sample Points, and the number of samples |
| stored after the trigger event is: |
| (Sample Points) – |
|
|
Note |
Example 4: Setting Channel 2 to Delay Acquisition by 1,500,000 Samples
The acquisition of samples starts when a trigger point is met or when a trigger is forced by setting the corresponding Force bit. If the acquisition is to be triggered by a trigger event (signal trigger, external trigger or forced trigger) the first sample is collected either immediately, within one sample clock period from the moment when the trigger occurs or after a Delay Period. The Delay Period is determined by the value programmed in the Trigger Delay register of the respective channel. The Delay Period is based on the Sample Rate value. If the value in the Trigger Delay register is set to zero, the sampling starts immediately after the trigger event. If the Trigger Delay register is set to 100 (0x64), for example, then Sample Zero is taken 100 sample clocks after the trigger event.
In hexadecimal format, 1,500,000 corresponds to 0x16E360. The Trigger Delay register for Channel 2 is composed of two
Method 1: Make two 16 bits writes.
Write 0x0016 @ Base address + 0xC00068
Write 0xE360 @ Base address + 0xC0006A
Method 2: Make one 32 bits write.
52 | SVM2608 Programming |
