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REFN [n]
Reference harmonic mode control
The value of n sets the reference channel to one of the NF modes, or restores it to the
default 1F mode. The value of n is in the range 1 to 127.
REFP[.] [n]
Reference phase control
In fixed point mode n sets the phase in millidegrees in the range ±360000.
In floating point mode n sets the phase in degrees.
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.
RS [n
[n
]]
Set/read RS232 interface parameters
1
2
n
Baud rate (bits per second)
1
0
75
1
110
2
134.5
3
150
4
300
5
600
6
1200
The lowest five bits in n
following table:
bit number bit negated
0
data = 7 bits
1
no parity bit
2
even parity
3
echo disabled
4
prompt disabled
RSADDR [n]
Set/read RS232 address
The value of n sets the RS232 address in the range 0 to 15. This is relevant only
when using more than one instrument connected via the RS232 "daisy-chain"
method. Each instrument must be set to a unique address.
RT[.]
Ratio output
In integer mode the RT command reports a number equivalent to 1000×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.
In floating point mode the RT. command reports a number equivalent to X/ADC1.
SEN [n]
SEN.
Full-scale sensitivity control
The value of n sets the full-scale sensitivity according to the following table,
depending on the setting of the IMODE control:
Appendix E, ALPHABETICAL LISTING OF COMMANDS
n
1
7 1800
8 2000
9 2400
10 4800
11 9600
12 19200
13 38400
control the other RS232 parameters according to the
2
bit asserted
data = 8 bits
1 parity bit
odd parity
echo enabled
prompt enabled
Baud rate (bits per second)
E-19
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