Ametek 7230 Instruction Manual page 155

Bit 0 X channel output overload (> ±300 %FS)
Bit 1 Y channel output overload (> ±300 %FS)
Bit 2 X2 channel output overload (> ±300 %FS)
Bit 3 Y2 channel output overload (> ±300 %FS)
Bit 4 CH1 output overload
Bit 5 CH2 output overload
Bit 6 CH3 output overload
Bit 7 CH4 output overload
NAME Set/Read Instrument Name
The NAME command allows the user to store an ASCII text string as "name" to help
identify the instrument. This is especially useful when there are several instruments
connected to the same Ethernet network, since it can be used as a more convenient
alternative to the serial number as an aid to identification.
When sent with a string of up to 64 characters as a parameter, the string will be
stored. When sent without characters the instrument will respond with the stored
string. For example:
NAME Optical absorption lab lock-in amplifier
will set the name to "Optical absorption lab lock-in amplifier"; sending NAME with
no parameters will return:
Optical absorption lab lock-in amplifier
NC New curve
Initializes the curve storage memory and status variables. All record of previously
taken curves is removed.
NHZ.
Causes the lock-in amplifier to respond with the square root of the noise spectral
density measured at the Y channel output, expressed in volt/Hz or amps/Hz
referred to the input. This measurement assumes that the Y channel output is
Gaussian with zero mean. (Section 3.3.20). The command is only available in
floating point mode.
NN[.] Noise output
In fixed point mode causes the lock-in amplifier to respond with the mean absolute
value of the Y channel output in the range 0 to 12000, full-scale being 10000. If the
mean value of the Y channel output is zero, this is a measure of the output noise.
In floating point mode causes the lock-in amplifier to respond in volts.
NNBUF [n] Noise Buffer Length control
The value of n sets the noise buffer length according to the following table:
n Function
0 Noise buffer off
1 1 second noise buffer
2 2 second noise buffer
3 3 second noise buffer
4 4 second noise buffer
Appendix E, ALPHABETICAL LISTING OF COMMANDS
E-17