M9B-HFS INTERFACE
M9B-HFS OPERATION
Release 1.0 (97/10)
3-7
FOLD
<mnemonics>
Parameters:
0/OFF, 1/CV, 2/CC
Sets foldback mode for the supply. Foldback protection disables the power supply output
when the output enters the fold condition. Reset with the RST command.
Example:
Specify FOLD 1 or FOLD CV (Constant Voltage) when you want the supply to
operate in Constant Current mode and have foldback protection disable the output if the
supply switches to Constant Voltage mode.
Initial value:
FOLD 0 (OFF)
FOLD?
Asks for the supply’s present foldback setting.
Response:
FOLD
0/OFF
1/CV
2/CC
GTL
Go to local. Returns the power supply to local control. See LLO (local lockout).
HOLD <state >
Parameters:
1/ON, 0/OFF
Enables or disables voltage/current setting hold mode for the supply. When HOLD ON is
specified, hold mode is enabled so that all voltage and current settings which would
normally be implemented by the supply are held until a TRG (trigger) command is
received.
Initial value:
HOLD 0 (OFF)
HOLD?
Asks for the present hold mode setting.
Response:
HOLD 0/OFF (disabled)
1/ON (enabled)
ID?
Asks for the power supply model and the master EPROM version.
Response:
ID <model name><version>
IDATA <Ilo>,
<Ihi>
Parameters:
<Ilo>, <Ihi>
Calculates and records the slope and offset for programmed current using ILO and IHI
data. Set CMODE ON before using this command. See also the calibration procedures in
Section 4.
IHI
In response to this command, the power supply sends a programmed current value to the
output terminal. This value is at the high end of the power supply’s current range and is
read by an external device connected as part of the calibration procedure. Refer to this
value as IHI and record it to use as input with the IDATA command. Set CMODE ON
before using this command. See also the calibration procedures in Section
4