Ametek 7230 - Page 151

Appendix E, ALPHABETICAL LISTING OF COMMANDS
E-13
In fixed point mode, n is in millihertz, and in floating point mode n is in hertz.
FSTEP[.] [n
1
n
2
] Oscillator frequency sweep step size and type
The frequency may be swept either linearly or logarithmically, as specified by
parameter n
2
. The step size is specified by parameter n
1
.
Log sweep n
2
= 0
In fixed point mode, n
1
is the step size in thousandths of a percent.
In floating point mode n
1
is in percent. The range of n
1
is 0 to 100.000%
Linear sweep n
2
= 1
In fixed point mode, n
1
is the step size in millihertz.
In floating point mode n
1
is in hertz. The range of n
1
is 0 to 120 or 250 kHz
Linear seek sweep n
2
= 2
In fixed point mode, n
1
is the step size in millihertz.
In floating point mode n
1
is in hertz. The range of n
1
is 0 to 120 or 250 kHz
The seek sweep mode automatically stops when the signal magnitude exceeds
50% of full scale. This mode is most commonly used when setting up the virtual
reference mode.
FSTOP[.] [n] Oscillator frequency sweep stop frequency
Sets the stop frequency for a subsequent sweep of the internal oscillator frequency,
in the range 0 to 120 or 250 kHz.
In fixed point mode, n is in millihertz and in floating point mode n is in hertz.
GWADDR [n1 n2 n3 n4] Ethernet Gateway Address
When this command is sent without parameters, the instrument responds with the
current gateway address e.g. 169.254.0.1
When sent with the four parameters, the command sets the gateway address that will
be used when the model 7230 is set to static IP address mode (via the rear panel
Config Switch 2, see section 4.2.07)
The parameters are separated by a space character and not by a dot, e.g.
GWADDR 169 254 0 1
sets the gateway address 169.254.0.1
Note that the setting can be overridden if the IP address is set using the IPADDR
command.
HC Halt curve acquisition
Halts curve acquisition in progress. It is effective during both single (data acquisition
initiated by TD command) and continuous (data acquisition initiated by TDC
command) curve acquisitions. The curve may be restarted by means of the TD, TDT
or TDC command, as appropriate. If an oscillator frequency and/or amplitude sweep
has been defined and linked to the curve buffer using the SWEEP command with a
parameter of 9, 10 or 100, then this sweep will be stopped as well.
ID Identification
Causes the lock-in amplifier to respond with the number 7230.