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4 Using the Regenerative Power System
Set the Output Turn-On/Turn-Off Mode
The turn-on/turn-off setting only applies when the unit is operating in voltage priority
mode. In current or power priority mode, the turn-on/turn-off behavior is set to High
impedance.
The voltage priority turn-on and turn-off behavior can be set to either high or low impedance mode.
Low impedance mode is for devices like power converters. During output transitions, current is
sourced or discharged for fast output voltage response.
High impedance mode is for devices like batteries, where output transitions are controlled to minimize
output current.
Front Panel Menu Reference
Select Output\Advanced\Tmode.
Select either High impedance or Low impedance for
turn-on an turn-off modes.
Check Coupled to couple the turn-on and turn-off
modes. Then press Select.
Enable the Output
SHOCK HAZARD, LETHAL VOLTAGES - Many models generate output voltages up to
2,000 VDC! Ensure that all instrument connections, load wiring, load and sense
connections are insulated using high-voltage wire. Always attach the safety cover
provided, so that no accidental contact with lethal voltages can occur.
Because of internal circuit start-up procedures and any installed relay options, OUTPut ON may take
tens of milliseconds to complete its function. OUTPut OFF delays may also be in effect. For more
information regarding output turn-on and turn-off delays, refer to
Front Panel Menu Reference
Press the On/Off key.
In addition to the front panel and SCPI Output On and Output Off commands, you can also use
OnCouple and OffCouple signals to enable and disable the output. Refer to
more information. When coupling is enabled, changing the turn-on setting also changes the turn-off
setting and vice-versa.
During a 1-cycle ac line dropout the unit may reboot. The output will remain off after
reboot until the operator reinstates the previous settings, either by the front panel
controls or using a computer program. This behavior is consistent with safe
operating procedures.
112
SCPI Command
To select high impedance turn-on:
OUTP:TMOD:ON HIGHZ
To select low impedance turn-off:
OUTP:TMOD:OFF LOWZ
To couple the turn-on and turn-off modes:
OUTP:TMOD:COUP ON
SCPI Command
OUTP ON|OFF
Keysight RP7970 & RP7980 Series Operating and Service Guide
Turn-On/Turn-Off
Delays.
Output Couple Control
for
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