User manual

48 GMC-I Gossen-Metrawatt GmbH
T_MODE, T_MODE? – Function Selection for the Trigger Inputs
Menu
Function
Two floating trigger inputs are provided at the analog interface,
whose action can be defined independent of each other. In this
way, control functions can be triggered at the device from the
application.
Depending upon which function is selected, the trigger input is
level or edge controlled.
Note: Detailed descriptions of the control level are included in the
section entitled “Analog Interface”.
Setting Command
Syntax: T MODE txt1,txt2
Default setting
or after RESET (*RST): OFF
Query Command
Syntax: T MODE?
Sample response string: T MODE txt1.txt2
Parameters List
1
The associated TRGx LED lights up along with the selected trigger input if the
trigger parameter is not set to OFF and the trigger input is active.
TSET, TSET? – Memory Location Specific Dwell Time for the
SEQUENCE Function
Menu
Function
The TSET setting parameter defines the memory location specific
dwell time for reading out a pair of voltage and current values for a
sequence. If no specific value, but rather 0 [s], is assigned to
TSET, TDEF is used as a default value for execution of the
sequence function.
Setting Command
Syntax: TSET w
Value range: 0,000 ≤ w ≤ 65,535 [s]
Default setting
or after RESET (*RST): 0.000
Query Command
Syntax: TSET?
Sample response string: TSET w
Comments
If dwell times of greater than 65.535 seconds are required, this
can be achieved by specifying the same voltage and current
values for several consecutive memory locations.
Another possibility is to invoke subsequences with the
corresponding number of repetitions.
UI_C_SET, UI_C_SET?
– Reference Values for Uout/Iout Tolerance Band Function
Menu
Function
This function makes it possible to set up reference values for
voltage and current, which are continuously compared with
momentary measured values.
In this way, for example, checking is possible in order to
determine whether or not actual voltage and current values lie
within the specified range (tolerance band function).
The results of this comparison can be queried in condition register
CRB?, bits 0 and 1, and in event register ERC?, bits 0 and 1.
The results can also be assigned to signal outputs SIG123 at the
analog interface with the help of the SIG123 txt1.txt2.txt3
command.
Setting Command
Syntax: UI_C_SET w1,w2,w3,w4
Value range w1, w2: 0 ≤ w1 < w2 ≤ Unom [V]
Value range w3, w4: 0 ≤ w3 < w4 ≤ Inom [A]
Default setting
or after RESET (*RST): 0,Unom,0,Inom
Query Command
Syntax: UI_C_SET?
Sample response string: UI_C_SET w1.w2.w3.w4
Parameters List
UL_H, UL_H? – Upper Limit Value for Voltage Setting
Menu
Function
UL_H defines the upper setting limit (soft-limit) for voltage setpoint
value Uset.
The limit can be used to assure that output voltage is not
inadvertently set above a specified value.
The UL_H command corresponds to the ULIM command for the
SSP6XN Konstanter series as an upper limit value.
Thus UL_H can also be replaced with ULIM.
When the ULIM? query is executed, UL_H +XXX.XXX is
returned as a response.
Values outside of the value range (Uset ≤ w ≤ Unom) are not
accepted, and cause generation of an error message and setting
of an error bit in event register ERC.2.
Unom is the device-specific maximum nominal voltage.
Entered numeric values are rounded off to device-specific
resolution.
Setting Command
Syntax: UL_H w
Value range: Uset ≤ w ≤ Unom
Default setting
or after RESET (*RST): w = Unom
Query Command
Syntax: UL_H?
Sample response string: UL_H +XXX.XXX
Comments
The UL_L function is not active for setting output current by
means of control signal Iext via the analog interface.
Param-
eter
Content Meaning Level
controlled
LED
1
txt n
OFF Trigger input function deactivated X
OUT Trigger input acts upon the output: output
on/off
XOUTPUT
SQS RECALL: memory recall (step-by-step),
edge controlled, time dependent
(functions like SEQUENCE STEP)
SEQ STS
SEQ SEQUENCE: sequential memory recall
(functions like SEQUENCE GO)
XSEQ STS
LLO LOCAL LOCKED: front panel disabling X
LCL
LOCKED
MIN MINMAX: min-max memory for measured
values
X
AIX Analog input UEXT, IEXT X Uext ON
AIU Analog input UEXT X Uext ON
AII Analog input IEXT X Iext ON
Parameters Format Meaning
w1 nnn.nnn [V] Lower voltage reference value
w2 nnn.nnn [V] Upper voltage reference value
w3 nnn.nnn [A] Lower current reference value
w4 nnn.nnn [A] Upper current reference value