DATATEC HAMEG HM8135, Руководство пользователя

Страница: 42 / 64

42
Remote Operation
same quantity are brought together in a tree structure. We
are going to detail function by function beginning with the
simplest and the most useful.
6 .4 Commands description
Syntax conventions
The following syntax conventions are valid:
❙lower cases in keywords are optional, for example the
keyword OUTPut may be transmitted as OUTP (short
writing) or OUTPUT (long writing)
❙[ ] The keyword in brackets is optional
❙| Exclusive OR between several parameters
❙NR1 A string of digits without decimal point (1234)
❙NR2 A string of digits with a decimal point (1234.56)
❙NR3 A string representing a decimal number with an
exponent (1234.56E+3)
Initialisation
*RST idem key ESC at power on time except beep,
display, com and memory config (0 – 9) which
are not modified
6 .5 General commands
*IDN? Identification
*SAV x Saving the current configuration (x from 0 to 9)
*RCL x Recall a configuration (x from 0 to 9)
SNR?
Serial number of the instrument
FAB? Manufacture date of the instrument
6 .6 Bus commands
LK0 Enable local mode
LK1 Disable local mode (all buttons locked)
RM0 Disable remote mode
RM1 Enable remote mode
6 .7 Sound commands
BP0 Beep off
BPS Soft beep
BPL Loud beep
6 .8 OUTPUT
Commands in order to activate the RF output signal
Syntax:
:OUTPut[:STATe] 0 | OFF | 1 | ON (1)
:OUTPut[STATe]? (2)
Sending line (1) activates or deactivates the RF output. The
parameters 0 or OFF turn off the RF output (if the output is
ON), 1 or ON turn on the RF output.
Sending line (2) the instrument returns the output state of
the instrument. It sends back 1 for output ON and 0 for
output OFF.
Examples:
:OUTP ON Ouput ON
:OUTP 1 Ouput ON
:OUTPUT ON Ouput ON
:OUTPUT:STATE 1 Ouput ON
:OUTP? Request for state
:OUTPUT:STATE? Request for state
6 .9 POWER commands
Commands in order to change the level of the RF output
signal
Syntax:
:POWer[:LEVel] < NUM > (1)
:POWer[:LEVel]? (2)
:POWer:UNIT V | DBM (3)
:POWer:UNIT? (4)
Sending line (1) modifies the level. The
<
NUM
>
parameter
is a NR2 number (see paragraph Syntax conventions). No
unit has to follow the number, the current unit is assumed.
Sending line (2) the instrument returns the current level.
The instruments sends back a NR2 number corresponding
to the resolution without the unit.
Sending line (3) changes the current unit. Two parameters
are possible: V for Volt (mV / µV included) or DBM for dBm.
Sending line (4) the instruments returns the current unit.
The instruments sends back the same string as the corres-
ponding command parameters above (e.g. DBM).
Examples:
:POW:UNIT DBM Set the level unit dBm
:POWER:UNIT DBM Set the level unit dBm
:POW 5.7 Set the level to 5.7 dBm
:POW:LEV 5.7 Set the level to 5.7 dBm
:POWER:UNIT? Request for unit
6 .10 FREQUENCY commands
Commands in order to change the frequency
Syntax:
:FREQuency[:CW|:FIXed] < NUM > (1)
:FREQuency[:CW|:FIXed]? (2)
Sending line (1) modifies the carrier frequency. The < NUM >
parameter is a NR1 or NR2 or NR3 number (see paragraph
Syntax conventions). No unit has to follow the number, the
Hz unit is the default one. The value is rounded (same as
the keypad) to the resolution. The CW and FIXed options
have no particular effect on the instrument, they are pre-
sent for compatibility with programs existing in the SCPI
standard.
Sending line (2) the instrument returns the current (carrier)
frequency. The instrument sends back a string representing
a NR3 decimal number.
Examples:
:FREQ 678E+6 Setting of the frequency
to 678 MHz
:FREQUENCY 34000000 Setting of the frequency
to 34 MHz
:FREQ? Request for frequency
:FREQ:FIX 900E+6 Setting of the frequency
to 900 MHz