31
TLCK?
The TLCK? query returns the time duration the FS700 has been locked.
The answer is returned in the format h, m, s and the number of hours
can go up to 32767. If the FS700 is unlocked, the value 0, 0, 0 is
returned.
TULK?
The TULK? query returns the most recent duration the FS700 was
unlocked. The answer is returned in the format h, m, s where the
maximum number of hours is 32767. If the FS700 has never been
unlocked, the value 0, 0, 0 is returned.
Phase Meter Commands
DLTF? i
The DLTF? query returns the fractional frequency difference between
the internal source and the external input. The answer is returned in
exponential format (x.y E-z). If no input signal is present or the input
frequency is set to less than 100 kHz, the value 9.9 E-99 is returned.
The value "> 1.0 E0" is returned if the frequency ratio is greater than 1.
The parameter i selects either the result of the 1 sec measurement
(i=0), or the result of the arbitrary length measurement (i=1).
DLTP?
The DLTP? query returns the phase change during the current arbitrary
length frequency offset measurement. The number is returned in
exponential notation (±x.yy E ±z). The value 0 E 0 is returned if no
measurement is in progress.
FREQ(?) {i}
The FREQ i command sets the frequency output to the value indexed
by i. The FREQ? query reads back the setting of the frequency output.
The frequency values corresponding to different values of i are:
i
Frequency
0
0.01 Hz
1
0.02 Hz
2
0.05 Hz
3
0.1
Hz
4
0.25 Hz
5
0.5
Hz
6
1.0
Hz
7
2.5
Hz
8
5.0
Hz
9
10.0
Hz
10
25.0
Hz
11
50.0
Hz
12
100.0
Hz
13
250.0
Hz
14
500.0
Hz
15
1.0
kHz
16
2.5
kHz
17
5.0
kHz
18
10.0
kHz
19
25.0
kHz
20
50.0
kHz
