Hameg HM8135-X, Руководство пользователя

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41
Subject to change without notice
O p e r a t i n g c o n t r o l s
the resolution. Sending line (5) and (7) the instrument returns
the two frequencies START and STOP. It sends back a string
representing a NR3 decimal number.
:SWEep :TIME < NUM > (8)
:SWEep :TIME? (9)
Sending line (8) the SWEEP TIME can be changed. The < NUM >
parameter is a NR2 number (see paragraph Syntax conven-
tions). No unit must follow the number, sec. unit is the default
one. The value is rounded to the resolution.
Sending line (9) the instrument returns the SWEEP TIME. It
sends back a string representing a NR2 decimal number.
Example:
:SWE :TIME 5;:FREQ:STAR 16E+6;:FREQ:STOP 1.2E+9;
:FREQ :MODE SWE
SYSTEM
Syntax:
:SYSTem:ERRor?
Sending this line the instrument returns the current error code.
This code is the fi rst one recorded even if several errors have
occured. After sending the error number the instrument sets
it to zero (it also set it to zero at power on time). Refer to the
table of the error codes.
Notes regarding the syntax
As mentioned in some examples above, in each command line
the fi rst character ”:“ is optional. In case of successive com-
mands corresponding to the same tree it is not necessary to
repeat all the descriptions of the commands.
Example:
FM:INT:FREQ 9E+3; SHAP SIN; DEV 150E+3; STAT ON
is the same as:
:FM:INT:FREQ 9E+3; :FM:INT:SHAP SIN; :FM:DEV 150E+3;
STAT ON
In fact: FM for the fi rst command indicates that we get into the
FM tree (group) and the following commands, if they belong to
the same group, may be shorter (without repeating all the tree
descriptions). If the next command does not belong to the same
tree, it is necessary to specify the root.
Error codes and their meaning
00 No error
01 Direct Digital Synthesis error (Hardware)
02 Internal reference error (Hardware)
03 External reference error (Hardware)
04 PLL1 error (Hardware)
05 PLL2 error (Hardware)
08 Calibration error
09 Overload error (Hardware)
15 Level error (out of range)
16 (Carrier) Frequency error (out of range)
21 AM modulation in progress
(impossible to turn another modulation on)
22 PM modulation in progress
(impossible to turn another modulation on)
23 FM modulation in progress
(impossible to turn another modulation on)
25 AM depth error (out of range)
62 FM deviation error
(within the range 2 kHz - 400 kHz)
63 FM deviation error
(within the range 1 kHz - 200 kHz)
64 FM deviation error
(within the range 200 Hz - 150 kHz)
70 AM frequency modulation error
(within the range 10 Hz - 20 kHz)
71 AM frequency modulation error
(within the range 10 Hz - 40 kHz)
75 PM deviation error (in remote control, no phase < 0)
76 frequency error (in remote control, no frequency < 0)
81 FM or PM frequency modulation error
(within the range 10 Hz - 20 kHz)
82 FM or PM frequency modulation error
(within the range 10 Hz - 100 kHz)
90 PM deviation error
(within the range 0 rad – 3.14 rad)
91 PM deviation error
(within the range 0 rad - 10.00 rad)
92 PM deviation error
(within the range 0 deg - 180.0 deg)
93 PM deviation error (within the range 0 deg - 573.0 deg)
102 Syntax or Parameter error (remote control)
103 Invalid Separator (remote control)
110 Command header error (remote control)
120 Numeric data error (remote control)