Ametek 7230 Instruction Manual page 153

When sent with the four parameters, the command sets the IP 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.
IPADDR 169 254 0 10
sets the IP address to 169.254.0.10 Based on the IP address, this command will also
generate a default subnet mask and gateway address so if values other than the
defaults are required set the IP address before setting the subnet mask and gateway
address otherwise they will be overwritten.
IPLOCK Restrict Ethernet Access
When this command is sent via the Ethernet interface, subsequent connection
requests and hence commands will only be accepted if sent from the same IP address,
preventing unauthorized access to the instrument.
IPUNLOCK Remove Ethernet Access Restrictions
When this command is sent via the Ethernet interface, subsequent connection
requests and hence commands will be accepted from any computer on the same
network as the instrument.
LEN [n] Curve length control
The value of n sets the curve buffer length in effect for data acquisition. In fast curve
buffer mode the maximum allowed value is 100,000; in standard mode it depends on
the number of curves requested using the CBD command, and a parameter error
results if the value given is too large. For this reason, in standard mode if the number
of points is to be increased and the number of curves to be stored is to be reduced
using the CBD command, then the CBD command should be issued first.
LF [n n ] Signal channel line frequency rejection filter control
1 2
The LF command sets the mode and frequency of the line frequency rejection
(notch) filter according to the following tables:
n Selection
1
0 Off
1 Enable 50 or 60 Hz notch filter
2 Enable 100 or 120 Hz notch filter
3 Enable both filters
n Notch Filter Center Frequencies
2
0 60 Hz (and/or 120 Hz)
1 50 Hz (and/or 100 Hz)
LOCK System lock control
Updates all frequency-dependent gain and phase correction parameters.
LR[.] Log Ratio output
In integer mode, the LR command reports a number equivalent to
1000×log(X/ADC1) where X is the value that would be returned by the X command
and ADC1 is the value that would be returned by the ADC1 command. The response
range is -3000 to +2079
Appendix E, ALPHABETICAL LISTING OF COMMANDS
E-15