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Chapter 6, COMPUTER OPERATION
6.7.12 Instrument Identification
ID
VER
DATE
6.7.13 Front Panel
LTS [n]
LTSRCU [n]
PAGE [n]
6.7.14 Auto Default and Calibration
ADF n
FIBER
6-34
network as the instrument.
Identification
Causes the lock-in amplifier to respond with the number 7124.
Report firmware version
Causes the lock-in amplifier to respond with the firmware version number, as also
displayed on the Configuration menu.
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
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
RCU LED on/off control
The value of n controls the LED on the front panel of the 7124 RCU according to the
following table:
n
Selection
0
LED always off
1
Normal operation
Front panel display page number
This command sets or reads the "page number" of the display on the main console,
for example PAGE 1 selects the Main Display. n lies in the range 1 - 11, 21 - 23, and
40 - 89.
Auto Default
The ADF command performs an auto-default operation according to the following
table:
n
Significance
0
All instrument settings are returned to their factory default values
1
All instrument settings, with the exception of the communications settings, are
returned to their factory default values
NOTE: If the ADF 0 command is used when the communications settings are at
values other than their default settings, then communication will be lost.
Fiber calibration
When this command is sent, the instrument performs an automatic fiber calibration
routine, by correcting the oscillator and signal channel amplitude and phase errors
caused by variability in the fiber optic connector losses.
st
century).
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