Ametek 7280 Instruction Manual page 212

Appendix F, ALPHABETICAL LISTING OF COMMANDS
TC [n]
TC.
F-20
TADC parameter Effect on CBD parameter
6 automatically set to 256
7 automatically set to 768
8 automatically set to 256
9 automatically set to 768
10 automatically set to 256
11 automatically set to 768
12 automatically set to 256
13 automatically set to 768
The maximum sampling rate depends on the number of ADC inputs used, and is
either 25 µs when sampling ADC1 only, or 56 µs when sampling both ADC1 and
ADC2.
In the Variable Rate modes, the sampling speed is set by the BURSTTPP (burst time
per point) command.
NOTE: TADC modes 10 to 13 cause all other functions of the host microprocessor
to be suspended, including responding to computer commands, until a trigger is
received at the TRIG input. Hence they should only be used when the user is
certain that such a trigger will occur.
Filter time constant control
The value of n sets the output filter time constant in accordance with the following
table:
FASTMODE = 0,
NOISEMODE = 0
n time constant
0 N/A
1 N/A
2 N/A
3 N/A
4 N/A
5 N/A
6 N/A
7 N/A
8 500 µs
9 1 ms
10 2 ms
11 5 ms
12 10 ms
13 20 ms
14 50 ms
15 100 ms
16 200 ms
17 500 ms
18 1 s
19 2 s
20 5 s
21 10 s
22 20 s
23 50 s
FASTMODE = 1, FASTMODE = 0,
NOISEMODE = 0 NOISEMODE = 1
time constant time constant
1 µs N/A
2 µs N/A
5 µs N/A
10 µs N/A
20 µs N/A
50 µs N/A
100 µs N/A
200 µs N/A
500 µs 500 µs
1 ms 1 ms
2 ms 2 ms
4 ms 5 ms
10 ms 10 ms
20 ms N/A
50 ms N/A
100 ms N/A
200 ms N/A
500 ms N/A
1 s N/A
2 s N/A
5 s N/A
10 s N/A
20 s N/A
50 s N/A
FASTMODE = 1,
NOISEMODE = 1
time constant
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
500 µs
1 ms
2 ms
4 ms
10 ms
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A