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(E) 12-5
SIR-3400H / SIR-3032i / SIR-3032W
12-6. Setting the Input DC Offset (Modes: STOP, E-E, REC-PAUSE, and REC)
When the input DC offset setting is made, a DC offset voltage is applied to the input signal that is recorded
so that the signal level can be shifted. This enables the canceling of DC components contained in the input
signal that are not needed for recording, which raises the resolution.
The DC offset value is set for each channel.
Set using either Manual or Auto.
Manual setting : The input DC offset values are set manually.
Auto setting : The DC component is automatically calculated from the maximum and minimum values
of the detected input signal, and then the DC offset value is automatically set by the
recording unit.
12-6-1. Setting Input DC Offset Manually
1 Press the OFFSET key.
The M lamp at the top left of the key and the channel number in the MONITOR display area flash. The
Offset indicator appears in the setting value display area.
2 Use the g / G key to select the target channel.
Setting value : EXP. UNIT 1 to 4, A/B
MONITOR 1 to 32
3 Use the f / F key to change the input DC offset value.
The offset value changes by +1 %/_1 % each time the key is pressed. Holding down the key continually
increases or decreases the value.
Setting value 100 ..... 0 ..........
__
__
_100
Input DC offset value +100 % ±0 % _100 %
Offset value and input range value
Example : When +100 % is set for the input DC offset value:
When the input range is +10 Vpk, a DC voltage of +1.00 x 10 (V) = +10.0 (V) is superimposed
on the input signal so that the waveform shifts in a positive direction.
. Pressing the F1 key applies the settings to all channels of the current channel group (A or B).
. Pressing the F2 key enables the channel setting to be checked on a list. Press the F4 key to return to the
original screen.
4 Press the OFFSET key. The settings are completed.
When not in setting mode, the f, F, g, and G keys can be used to change the monitor channel.
f / F key : Every 16 channels
g / G key : Every channel
12. Operation Settings (Using Setting key)