Table of Contents
Advertisement
address set from the front panel the instrument will switch into addressed mode. If n
does not match the address set from the front panel the instrument will switch into
unaddressed mode. Note that the \N n command does not change the address of an
instrument but which instrument is addressed.
NOTE: All instruments must have a unique address.
DD [n]
Define delimiter control
The value of n, which can be set to 13 or from 32 to 125, determines the ASCII value
of the character sent by the lock-in amplifier to separate two numeric values in a
two-value response, such as that generated by the MP (magnitude and phase)
command.
ST
Report status byte
Causes the lock-in amplifier to respond with the status byte, an integer between 0
and 255, which is the decimal equivalent of a binary number with the following bit-
significance:
Bit 0
Command complete
Bit 1
Invalid command
Bit 2
Command parameter error
Bit 3
Reference unlock
Bit 4
Output Overload
Bit 5
New ADC values available after trigger
Bit 6
Input Overload
Bit 7
Data available
N
Report overload byte
Causes the lock-in amplifier to respond with the overload byte, an integer between 0
and 255, which is the decimal equivalent of a binary number with the following bit-
significance:
Bit 0
X(1) channel output overload (> ±300 %FS)
Bit 1
Y(1) 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
REMOTE [n]
Remote only (front panel lock-out) control
Allowed values of n are 0 and 1. When n is equal to 1, the lock-in amplifier enters
remote only mode in which the front panel control functions are inoperative and the
instrument can only be controlled with the RS232, USB or Ethernet interfaces. When
n is equal to 0, the front panel controls function normally.
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
Chapter 6, COMPUTER OPERATION
6-33
Advertisement
Table of Contents
