Trigger channel: optional synchronous start of several channels.
Trigger type: per software or external digital trigger.
Trigger edge: trigger event on falling, rising or any edge.
Time-Out: in case the external trigger signal does not occur.
4.1.2 Timer Controlled Output
Programming of timer controlled output is done in operation mode
“Streaming”. Each D/A channel is accessed as a subdevice of type
ME-TYPE_AO, subtype ME-SUBTYPE_STREAMING. Note the order
of operation as described in the ME-iDS manual. The following pa-
rameters can be configured by the functions
Determine subdevice with
…functions (capable for
streaming operation).
Channel number: always “0”
Output voltage range: ±10 V.
Trigger channel: optional synchronous start of several channels.
Trigger type: per software or external digital trigger.
Trigger edge: trigger event on falling, rising or any edge.
A programmable counter serves as timer which is configured by
the trigger structure
meIOStreamTrigger.
The 32-bit counter
uses a 33 MHz base frequency. This results in a period of
30.30 ns, which is the smallest time unit available. This will be
referred to as “1 Tick” in the following sections. The functions
meIOStreamFrequencyToTicks()
and
meIOStreamTime-
ToTicks()
offer a convenient way to convert the frequency
resp. the period in ticks to program the timer. Sample rates
between 500 kS/s and 0.5 samples per minute can be set.
4.2 Digital-I/O Section
All ME-6000/6100 PCI with hardware version 2.6 and higher as
well as all CompactPCI boards provide two 8-bit-wide digital-I/O
ports (A, B). Each port is considered as a unique subdevice I the
Meilhaus Electronic Intelligent Driver System (ME-iDS) and can be
independently configured as input or output. On power up, all ports
ME-6000/6200
ME-6100/6300
-
✔
