Chapter 6, COMPUTER OPERATION
6-35
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
network as the instrument.
6.7.12 Instrument Identification
ID Identification
Causes the lock-in amplifier to respond with the number 7270.
VER Report firmware version
Causes the lock-in amplifier to respond with the firmware version number, as also
displayed on the Configuration menu.
DATE Last calibration date
The response is a six digit number giving the date of the last calibration where the
first two digits are the day, the second two digits are the month and the last two
digits are the year (in the 21
st
century).
6.7.13 Front Panel
LTS [n] Display on/off control
The value of n controls the front panel LCD display according to the following table:
n Selection
0 Display off
1 Normal operation
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