Keysight Technologies AC6801B, Руководство по эксплуатации и обслуживанию

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Turning the Output On and Off
Press [On/Off] to toggle the output on and off.
ON: The specified voltage is output and the Output LED turns green.
OFF: The output voltage turns off (high impedance mode) and the Output LED turns off.
The output is always off at power-on.
If a protection function trips, the output is turned off. However, if the current limit operation is limit
control and the overload protection function (current limit) trips, the output is not turned off.
To prevent the possibility of electric shock, do not touch the output terminal block.
If a capacitor, battery, or similar device is connected as a load in DC mode, voltage
remains at the section connected to the output terminal block even when the output is off
until the load energy is discharged. The discharge time of the internal capacitor when no
load is connected is approximately 0.1 seconds. To prevent the possibility of electric
shock, do not touch the output terminal block.
When the output is turned on, several volts of undershoot or overshoot may appear for a
time period on the order of ten microseconds.
Principle of Output on/off
The AC6800B Series instruments do not disconnect output from the internal circuits mechanically
using switches and relays. Instead, when the output is turned off, the instruments electrically increase
output impedance to limit the output without chattering.
The resistance in the high-impedance condition is shown below.
Voltage Range AC6801B AC6802B AC6803B AC6804B
155 V approx. 40 k Ω approx. 20 k Ω approx. 10 k Ω approx. 5 k Ω
310 V approx. 80 k Ω approx. 40 k Ω approx. 20 k Ω approx. 10 k Ω
Keysight AC6800B Series Operating and Service Guide 81
2 User Information