Page 74 CMD300 CONTROL SOFTWARE
C
YBER
A
MP
380, COPYRIGHT MARCH 2002, AXON INSTRUMENTS, INC.
The information indicates that for channel number 1 there is an AI 410 SmartProbe attached
to the CyberAmp input connector, its positive input is DC-coupled and its negative input is
grounded. The overall gain is 20 and is composed of a pre-filter gain of 10 and an output gain
of 2. The low-pass filter 3 dB cutoff is set at 10 kHz and the notch filter is bypassed. A +50
mV, input-referred DC offset is added to the input signal after the filter.
The STATUS DEFAULTS command displays information about the COM port being used
for communications and the RS232 bus device number, if any. It also displays information
about the channels selected for commands and whether responses to commands are verbose or
minimum.
The STATUS ID command displays information about the unit itself, but without any channel
specific information.
18)
TEST
NO
TCH
or
TEST
EL
ECTRODE
ON
/
OF
F
TEST NOTCH places the CyberAmp into the notch-filter test mode.
CMD300 waits for a
keystroke and then takes the unit out of the notch-filter test mode, restoring all previous
CyberAmp settings.
TEST ELECTRODE ON starts a 10 Hz test oscillator that injects 1µA of current into both the
positive and negative inputs. It can be used to measure the source resistances of the inputs.
The user should ground either the positive or the negative input to independently measure the
resistances. Following this test, take the unit out of electrode-test mode with TEST
ELECTRODE OFF.
19)
VERBOSE
This command maximizes all CyberAmp responses to commands. In this mode all command
responses are detailed and all commands evoke some confirming CyberAmp response.
20)
ZERO
ZERO commands the CyberAmp to attempt to zero the DC level of the signals on the selected
channels. The program reports the value of the offset prior to zeroing the output of the
channel amplifier. If the signal on a selected channel could not be zeroed in this manner, then
an error is reported for that channel.
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