Arbitrary Waveform Mode - Hameg Instruments HM8142 Handbuch

rated via interface. It is not possible to use the LOCAL button
to switch it back to local mode.
Format: LK0
Function: Takes the HM8142 out of localinhibit mode. The in-
strument can now be returned to local mode by pressing the
LOCAL button. The frontpanel controls are enabled. The local-
inhibit mode is also terminated by the RM0 command.
SU1 + SU2
Format: SU1:VV.mVmV or SU2:01.34
Function: Sets voltage 1 or voltage 2 to the indicated
value (SET value; BCD format)
Example: SU1:1.23
SU2:12.34
SU2:.1234
SI1 + SI2
Format: SI1:A.mAmAmA or SI1:0.123
Function: Sets current limit 1 or current limit 2 to the indica-
ted value (LIMIT value; BCD format)
Examples: SI1:1.000
SI2:0.123
SI1:.1234
RU1 + RU2
Format: RU1 or RU2
Reply: U1:12.34V or U2:12.34V
Function: The voltage values sent back by the HM8142 are the
programmed SET voltage values. Use the MUx commands to
query the ACTUAL values.
RI1 + RI2
Format: RI1 or RI2
Reply: I1:+1.OOOA or I2:–0.012A
Function: The current values sent back by the HM8142 repre-
sent the programmed LIMIT values for the current. Use the MIx
commands to query the ACTUAL current values.
MU1 + MU2
Format: MU1 or MU2
Reply: U1:12.34V or U2:12.24V
Function: The voltage values sent back by the HM8142 represent
the ACTUAL voltage values last measured at the outputs. Use
the RUx commands to query the SET voltage values.
MI1 + MI2
Format: M11 or M12
Reply: I1=+1.OOOA or I2=–0.123A
Function: The current values sent back by the HM8142 repre-
sent the ACTUAL current values last measured. Use the RIx
commands to query the programmed current LIMIT value. If the
outputs are switched off, then the reply will be I1:+1.OOOA.
TRU
Format: TRU:VV.mVmV
Function: Sets voltage 1 and voltage 2 to the indicated value
(SET voltage values in TRACKING mode). The values must fol-
low the BCD format.
Examples: TRU:1.23
TRU:01.23
TRU:12.34
TRU:1234
TRI
Format: TRI:A.mAmAmA
Function: Sets current 1 and current 2 to the indicated value
(LIMIT values in TRACKING mode). The values must follow the
BCD format.
All manuals and user guides at all-guides.com
U1 = 1.23 V
U2 = 12.34 V
U2 = 0.12 V
I1 = 1.000 A
I2 = 0.123 A
I1 = 0.123 A
U1 = U2 = 1.23 V
U1 = U2 = 1.23 V
U1 = U2 = 12.34 V
U1 = U2 = 0.12 V
R e m o t e c o n t r o l
Examples: TRI:1.000
TRI:0.123
STA
Format: STA
Reply: OP1/0 SQ1/0 ER0/1 CV1/CC1 CV2/CC2 RM0/1
Function: This command causes the HM8142 to send a
textstring containing information on the actual status.
OP0 The outputs are switched off.
OP1 The outputs are switched on.
SQ1 This 3 character string indicates that the device
status has changed (CV to CC, OP1 to OP0, etc.)
(only active when the service request function has
been enabled).
SQ0 when the service request mode is enabled, this
indicates no changes in the device status.
ER0 No error conditions
ER1 Overheated
CV1 Source 1: constant voltage operation
CC1 Source 1: constant current operation
CV2 Source 2: constant voltage operation
CC2 Source 2: constant current operation
RMI Device in remote control mode
RM0 Device not in remotecontrol mode
OPI + OP0
Format: OP1
Function: The outputs are switched on.
Format: OP0
Function: The outputs are switched off. If the outputs are swit-
ched off, then "——" is sent instead of CV1/CC1 or CV2/CC2 after
a STA command.
Example: OP0 SQ0 ER0 —— RM0
Clear
Format: Clr
Function: This command interrupts all functions of the
HM8142. The outputs are switched off, the voltages and cur-
rents are set to 0.
VER
Format: VER
Reply: x.xx
Function: Displays the software version of HM8142.
Example: VER 3.00
ID?
Format: ID?
Reply: HM8142-1
Function: HAMEG device identifi cation

Arbitrary waveform mode

The arbitrary waveform mode can be used for generation of
virtually any desired waveforms. For this purpose, a table com-
prising up to 512 voltage and time values can be defi ned. This
table is stored in nonvolatile memory with a backup battery, and
is not lost when the instrument is powered down. The following
commands are available for operating and programming this
function by interface:
ABT Transfer of arbitrary values
RUN Start waveform generation
STP Stop waveform generation
ABX Exit arbitrary mode
I1 = I2 = 1.000 A
I1 = I2 = 0.123 A
23
Subject to change without notice