44 9 Command Reference; Setup Commands - Hameg HM8118 Manual

R e m o t e C o n t r o l
9 Command reference
A syntax of 4 characters in a command chain specifies a com-
mand. Other than that the command chain consists of parame-
ters (variables). Multiple paraneters in a command chain are
separated by commas. Those parameters which are in brackets
( ) may optionally be used or interrogated while the parameters
not in brackets are being requested or . interrogated. Those
commands which may be requested are marked by a question
mark in brackets (?) following the syntax. Those commands
which may ONLY be interrogated are identified by a question
mark ? following the syntax.Commands which will possibly not
be requested are identified by Nr. ?. Do not transmit ( ) or { } as
parts of a command. Some variables have to be whole numbers,
others must be represented in floating point format, some in
exponential format. As a rule, the variables i and j are whole
numbers while the variable x is a real number.
9.1

Setup Commands

$STL (?) {i} The $STL command sets the time within the
Hm8118 to i ms if i is within 1 and 40,000.
$STL? requests the time set.
AVGM(?) {i} The AVGM command sets the averaging function to
OFF (for i = 0), to NORMAL (for i = 1) or to MEDIAN
(for i = 2). After the calculating mode was set to
normal, the number of measurement results must
be selected which are to be used for averaging (see
NAVG command).
The AVGM? requests the state of the averaging
calculation.
VBIA(?) {x} The VBIA command sets the internal DC bias vol-
tage. x may assume any value from 0.00 to 5.00 V.
This command will return an error message, if the
HM8118 is not in an operating mode suitable for
the application of a bias voltage. Possible states
are C-D, C-R, R-X or Z-
The VBIA? requests the actual value of the applied
DC voltage (BIAS).
IBIA(?) {x} The IBIA command defines the DC bias current.
i may be a value between 0 and 0.2 (0...200 mA).
This command returns an error, if the HM8118
is actually not stated for measuring inductor or
transformer. Possible states are L-Q, L-R, N-
or M.
The IBIA? query reads the actual BIAS value.
BIAS(?) {i} The BIAS command sets the DC bias voltage resp.
DC bias current to off (i = 0), internal (i = 1) or external
(i = 2, only possible with bias voltage). When internal
bias is selected, the instrument is set to voltage bias
if the current function is a valid voltage bias function
(see VBIA command). The instrument is set to cur-
rent bias if the current function is compatible with
current bias (see IBIA command). When external bias
is selected the current function must be compatible
with voltage bias.
The BIAS? requests the present bias status.
CIRC(?) {i} The CIRC command defines the circuit used by the
HM8118: i = 0 defines a series circuit, i = 1 defines
a parallel circuit and i = 2 sets the instrument to
the AUTO mode.
54
Subject to change without notice
Q.
Q
CIRC? requests the status of the equivalent circuit
setting.
CONV(?) {i} The CONV command sets the constant voltage to
OFF (i = 0) or to ON (i = 1).
CONV? requests the status of the constant voltage
setting.
FREQ(?) {x} The FREQ command sets the measuring frequency,
its value is given by x in Hz. If intermediate values
are tried the instrument will use the next higher
available value.
FREQ? requests the status of the measuring fre-
quency.
MMOD(?) {i} The MMOD command sets the trigger mode to
Continuous (i = 0), to Manual (i = 1) or to External
(i = 2).
MMOD? requests the status.
NAVG(?) {i} The NAVG command sets the number of averaging
measurements if NORMAL averaging mode is se-
lected (see the AVGM command) and the number
of averaging periods are between 2 and 99.
NAVG? requests the status of the number of ave-
raging periods.
RATE(?) {i} The RATE command sets the measuring speed to
one of the available steps: FAST (i = 0), MEDIUM
(i = 1) or SLOW (i = 2).
RATE? requests the status of the measuring speed.
RNGE(?) {i} The RNGE command sets the range and the as-
sociated source resistance manually:
i = 1: range 1 and 25Ω;
i = 2: range 2 and 25Ω;
i = 3: range 3 and 400Ω;
i = 4: range 4 and 6.4 kΩ;
i = 5: range 5 and 100kΩ;
i = 6: range 6 and 100 kΩ.
This command disables the autoranging (see RNGH
command).
PMOD(?) {i} The PMOD command sets the parameter of the
operation mode as follow:
i=0 : AUTO
i=1 : L+Q
i=2 : L+R
i=3 : C+D
i=4 : C+R
i=5 : R+Q
Θ
i=6 : Z+
Θ
i=7 : Y+
i=8 : R+X
i=9 : G+B
Θ
i=10 : N+
i=11 : M
PMOD? requests the status of the setting para-
meters.
Please note that relative measurements and
binning are not available in the autoranging mode!
RNGH(?) {i} The RNGH command disables (i = 0) or enables
(i = 1) the manual range selection. If manual is
disabled, autoranging will be enabled.