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Command reference
6 Command
reference
he commands described in this capter can be used with all
interfaces available for HM8150 (RS-232, USB and GPIB).
All commands have to be terminated with a carriage return
( = CR (13) corresponds 0x0D). Units are not transmitted.
Commands and values are seperated from each other by
colon. All data are transmitted as floating point data with
the exception of the coordinates of arbitrary signals. These
are in integer respresentation. If the indicated precision of
floating point numbers is excessive the last digits will be
deleted. Use decimal points when transmitting data e.g.
for the amplitude, not commas.
With the command groups waveform and operation mode
no parameters are transmitted, also the HM8150 will not
respond with an answer. The list of commands specifies
the controls, which correspond to the commands. Dis-
play commands cause the function generator to display
the parameter desired on the display, but it does not re-
turn the parameter via the interface. With the parame-
ter commands you can change the signal parameters like
fequency, offset etc. Using the parameter request com-
mands you can query the instrument settings and the
identification string. The commands of group 7 (arbitrary)
are used to set and request the arbitrary data.
6.1 General
RM1/RMO
Format:
RM1
Function:
Puts the function generator in remote mode.
The frontpanel controls (except the REMOTE button) are
disabled. In this mode, the HM8150 can only be operated
by interface. This mode can be terminated by sending a
RM0 command or by operating the REMOTE button.
Format:
RM0
Funktion:
Disables the remote mode.
Permitting operation by using the front panel controls. The
RM0 command also terminates the LK1 command..
LK1/LK0
Format:
LK1
Function:
Switches the HM8150 to local lockout mode.
The REMOTE button is disabled. The function generator
can now only be operated via interface. It is not possible to
use the REMOTE button to switch it back to local mode.
Format:
LK0
Function:
Takes the HM8150 out of local lockout mode.
The instrument can now be returned to local mode by
pressing the REMOTE button. The frontpanel controls are
enabled. The local lockout mode is also terminated by the
RM0 command.
CLR / RST
Format:
CLR
Function:
Initialization of the HM8150 (reset of the
factory settings). Stored arbitrary functions will remain
untouched.
Format:
RST
Function:
Initialization of the HM8150 (reset of the fac-
tory settings). Stored arbitrary function will be erased and
replaced by the factory-set waveform.
6.2 Waveform
Command Description
Illuminated button
SIN
Sine wave
TRI Triangle
SQR
Square wave
PLS Pulse
RMP
Sawtooth (positive)
RMN
Sawtooth (negative)
+ INVERT
ARB
Arbitrary
With these commands the waveform is chosen. If the
function generator receives a waveform command and
the INVERT function is enabled, the INVERT function will
be disabled. The function generator will output the selec-
ted waveform with the last set signal parameters. if possi-
ble. For example, if you change to a function whose ma-
ximum frequency is less than that of the current function,
the frequency is adjusted to the maximum value for the
new function
6.3 Operation mode
Command Description
Illuminated button
CTM
Continuous mode
GTM
Gated mode
GATED
TRM
Triggered mode
TRIG‘d
With these commands the operating mode is chosen. The
function generator is in continuous mode after switch-on.
The actual operating mode can be request with the STA?
command.
TRG
Format:
TRG Trigger signal
SW1/SW0
Format:
SW1 Turn on sweep mode
Format:
SW0 Turn off sweep mode
The command LK1 prevents manual operation. This may be ne-
cessary if the instrument is part of a test system.
To send a trigger signal via interface, you have to activate the
triggered mode TRM (TRIG‘d button iluminated).
Summary of Contents for Hameg HM8150
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