Mode Multiple Replay
Limits of segment size, memory size
(c) Spectrum GmbH
101
All figures listed here are given in samples. An entry of [8k - 16] means [8 kSamples - 16] = [8192 - 16] = 8176 samples.
The given memory and memory / divider figures depend on the installed on-board memory as listed below:
Please keep in mind that this table shows all values at once. Only the absolute maximum and minimum values are shown. There might be
additional limitations. Which of these values is programmed depends on the used mode. Please read the detailed documentation of the mode.
Programming the behaviour in pauses and after replay
Usually the used outputs of the analog generation boards are set to zero level after replay. This is in most cases adequate. In some cases it
can be necessary to hold the last sample, to output the maximum positive level or maximum negative level after replay. The stoplevel will
stay on the defined level until the next output has been made. With the following registers you can define the behaviour after replay:
All outputs that are not activated for replay, will keep the programmed stoplevel also while the replay is in progress.
Because the STOPLEVEL registers impact the digital samples fed to the D/A converter, the output is still shifted by the programmed
output offset, as described before.
Continuous
8
Mem/4
4
not used
not used
Single Restart
4
Mem/4
4
not used
not used
Standard Multi
4
Mem/4
4
4
Mem/8
4
not used
Standard Gate
4
Mem/4
4
not used
not used
FIFO Single
not used
4
8G - 4
4
0 (
∞
)
4G - 1
1
FIFO Multi
not used
4
Mem/8
4
0 (
∞
)
4G - 1
1
FIFO Gate
not used
not used
0 (
∞
)
4G - 1
1
Installed Memory
32 MSample
64 MSample
128 MSample
256 MSample
512 MSample
1 GSample
2 GSample
Mem
32 MSample
64 MSample
128 MSample
256 MSample
512 MSample
1 GSample
2 GSample
Mem / 2
16 MSample
32 MSample
64 MSample
128 MSample
256 MSample
512 MSample
1 GSample
Mem / 4
8 MSample
16 MSample
32 MSample
64 MSample
128 MSample
256 MSample
512 MSample
Mem / 8
4 MSample
8 MSample
16 MSample
32 MSample
64 MSample
128 MSample
256 MSample
Register
Value
Direction
Description
SPC_CH0_STOPLEVEL
206020
read/write
Defines the behavior after replay for channel 0
SPC_CH1_STOPLEVEL
206021
read/write
Defines the behavior after replay for channel 1
SPC_CH2_STOPLEVEL
206022
read/write
Defines the behavior after replay for channel 2
SPC_CH3_STOPLEVEL
206023
read/write
Defines the behavior after replay for channel 3
SPCM_STOPLVL_ZERO
16
Defines the analog output to enter zero level (D/A converter is fed with digital zero value)
SPCM_STOPLVL_LOW
2
Defines the analog output to enter maximum negative level (D/A converter is fed with most negative level)
SPCM_STOPLVL_HIGH
4
Defines the analog output to enter maximum positive level (D/A converter is fed with most positive level)
SPCM_STOPLVL_HOLDLAST
8
Holds the last replayed sample on the analog output
Activated
Used
Memory size
Segment size
Loops
Channels
Mode
SPC_MEMSIZE
SPC_SEGMENTSIZE
SPC_LOOPS
Min
Max
Step
Min
Max
Step
Min
Max
Step
