Vishay Micro-Measurements
System 7000 Programmer’s Reference Manual
Page 127 of 142
7.4.6 Channel Group
Channel group commands are only valid while the system is in the idle state.
7.4.6.1 Asynchronous Read A/D Converter Command
Length
Command
Group
Command
Code
Card Mask
Channel
Mask
Parameters
0x0006
0x06
0x8007
Query Only
Used
Used
None
This command reads the A/D converter value from the selected card/channel and returns the value in
reduced counts. The value returned is a 32-bit signed integer value. Data is filtered using a lowpass filter.
See the manual section on scaling A/D converter counts.
7.4.6.2 Set Channel Recording Group Command
Length
Command
Group
Command
Code
Card Mask
Channel
Mask
Parameters
0x0007
0x06
0x0001
Used
Used
Byte 8:
Channel Recording Group
Value
Group
0x01
Group A
0x02
Group B
0x03
Group C
0x04
Group D
Assigns a recording group to a channel
7.4.6.3 Set FIR Filter Command
Length
Command
Group
Command
Code
Card Mask
Channel
Mask
Parameters
varies
0x06
0x0002
No Query
Used
Used
Bytes 8-9:
16-bit number of taps
Bytes 10-…
The FIR coefficients. Each
coefficient is represented by a
32-bit IEEE single precision
value.
This function sets the coefficients for the FIR filter algorithm in the DSP
.
Your filter must be 252 taps.
(Also see the Set Default Filter command.)