Signal Channel Output Amplifiers - Ametek 7230 Instruction Manual

Dsp lock-in amplifier
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SLOPE [n]
Output low-pass filter slope (roll-off) control
When the fast analog output mode and noise measurement mode are turned off
(FASTMODE 0 and NOISEMODE 0), the selection is according to the following
table:
n
Slope
0
6 dB/octave
1
12 dB/octave
2
18 dB/octave
3
24 dB/octave
When:
a) The fast output filter mode is turned on, or
b) Noise measurement mode is turned ON (NOISEMODE 1)
the selection is according to the following table:
n
Slope
0
6 dB/octave
1
12 dB/octave

6.7.04 Signal Channel Output Amplifiers

XOF [n
[n
]]
X channel output offset control
1
2
n
Selection
1
0
Disables offset
1
Enables offset facility
The range of n
is ±30000 corresponding to ±300% full-scale.
2
YOF [n
[n
]]
Y channel output offset control
1
2
n
Selection
1
0
Disables offset facility
1
Enables offset facility
The range of n
is ±30000 corresponding to ±300% full-scale.
2
AXO
Auto-Offset
The X and Y channel output offsets are turned on and set to levels giving zero X and
Y channel outputs. Any changes in the input signal then appear as changes about
zero in the outputs.
EX [n]
Output expansion control
Expands X and/or Y channel outputs by a factor of 10. This changes the analog
outputs full-scale to ±10% if X or Y selected. The value of n has the following
significance:
n
Expand mode
0
Off
1
Expand X
2
Expand Y
3
Expand X and Y
Chapter 6, COMPUTER OPERATION
6-15

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