DATATEC HAMEG HM8135, Руководство пользователя

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Remote Operation
Sending line (7) the frequency of the internal modulation
signal can be changed. The
< NUM > parameter is a NR1 or
NR2 or NR3 number (see paragraph Syntax conventions).
No unit has to follow the number, Hz unit is the default
one. The value is rounded to the resolution.
Sending line (8) the instrument returns the current modu-
lation frequency. The instrument sends back a string repre-
senting a NR3 decimal number.
:PM:INTern:SHAPe SIN | SQU (9)
:PM:INTern:SHAPe? (10)
Sending line (9) the shape of the internal modulation signal
can be changed. The parameters are: SIN for a sine signal,
SQU for square.
Sending line (10) the instrument returns the current shape.
The instrument sends back the same strings as the corres-
ponding command parameters above.
:PM:STATe 0 | OFF | 1 | ON (11)
:PM:STATe? (12)
Sending line (11) the PM can be turned on or off. The PM is
turned on by sending the parameters 1 or ON and it is tur-
ned off by sending 0 or OFF (if present).
Sending line (12) the instrument returns the current PM
state. The instrument sends back 0, if no PM is in pro-
gress, and 1, if PM is present.
:PM:EXTern:COUPling AC | DC (13)
:PM:EXTern:COUPling? (14)
Sending line (13) the external PM modulation is set to AC
or DC mode.
Sending line (14) the instrument returns the current state.
The instrument sends back the same strings as the corre-
sponding command parameters above.
Example:
:PM:UNIT DEG; DEV 120; INT:FREQ 1E+3;
SHAP SIN; STATE 1
6 .16 FSK
Commands in order to modify FSK parameters
Syntax:
:FSKey :SOURce EXT (1)
:FSKey :SOURce ? (2)
Sending line (1) the modulation source can be changed (for
this unit version always EXT).
Sending line (2) the instrument returns the FSK source. It
sends back the string EXT (not EXTERN).
:FSKey :F0 < NUM > (3)
:FSKey :F0? (4)
:FSKey :F1 < NUM > (5)
:FSKey :F1? (6)
Sending line (3) and (5) the two frequencies F0 and F1 can
be changed. The
< NUM > parameter is a NR1 or NR2 or
NR3 number (see paragraph Syntax conventions). No unit
must follow the number, Hz unit is the default one. The
value is rounded to the resolution.
Sending line (4) and (6) the instrument returns the two fre-
quencies F0 and F1. It sends back a string representing a
NR3 decimal number.
:FSKey :STATe 0|OFF|1|ON (7)
:FSKey :STATe? (8)
Sending line (7) the FSK can be turned on or off. The FSK
is turned on by sending the parameters 1 or ON, and it is
turned off by sending 0 or OFF (if present).
Sending line (8) the instrument returns the current FSK
state. The instrument sends back 0, if no FSK is in pro-
gress, and 1, if FSK is present.
Example:
:FSK:SOUR EXT ; F0 400E+6 ; F1 410E+6 ; STAT ON
6 .17 PSK
Commands in order to modify PSK parameters.
Syntax:
:PSKey :SOURce EXT (1)
:PSKey :SOURce ? (2)
Sending line (1) the modulation source can be changed (for
this unit version always EXT).
Sending line (2) the instrument returns the PSK source. It
sends back the string EXT (not EXTERN).
:PSKey :PH0 < NUM > (3)
:PSKey :PH0? (4)
:PSKey :PH1
<
NUM
>
(5)
:PSKey :PH1? (6)
Sending line (3) and (5) the two phases PH0 and PH1 can
be changed. The
< NUM > parameter is a NR2 number (see
paragraph Syntax conventions). No unit must follow the
number, the current unit is the default one. If the value
has an accuracy higher than the resolution, the number is
rounded to the corres-ponding digit.
Sending line (4) and (6) the instrument returns the two
phases PH0 and PH1. It sends back a string representing a
NR2 decimal number (without unit).
:PSKey :UNIT RAD|DEG (7)
:PSKey :UNIT? (8)
Sending line (7) the current unit can be changed. Two pa-
rameters are possible: RAD for radian or DEG for degree.