30
Note: Set the intended ratio before enabling tracking.
The tracking is based on a ratio
between CH1 and CH2 when the tracking is enabled. If the voltage is the same on both
channels when set, the two channels will track together based on a 1 to 1 ratio. For
example, if CH1 = 1 V and CH2 = 2 V a 1 to 2 ratio is set when tracking is enabled. With
this ratio, a voltage increase on CH1 from 1 to 2 volts will result in 4 volts on CH2.
Tracking function is disabled if 0 V or 0 A is set when tracking is enabled.
4.14
Parameters in Series/Parallel Mode
Maximum voltage
When operating in Series mode, voltages between channels add. In Parallel mode, the voltage
equals the maximum voltage of the lowest voltage channel.
Table 4.1 - Maximum Voltage in Series/Parallel Modes
Model
9130B
9131B
9132B
Series CH1+CH2 Max Voltage
62 V
62 V
122 V
Parallel CH1+CH2 Max Voltage
31 V
31 V
62 V
Parallel CH2+CH3 Max Voltage
6 V
6 V
6 V
Parallel CH1+CH2+CH3 (All) Max Voltage
6 V
6 V
6 V
4.15
Over Temperature Protection
If the internal temperature of the power supply exceeds 176°F (80°C
)
, the instrument will
protect itself by automatically turn the output off. When this happens, the instrument beeper
will turn on and the display will indicate Over Temp. It is recommended that the power supply
be disconnected from the DUT and powered off to allow the supply to cool down to normal
operating temperature.
4.16
Remote Sense
Remote sense can be used to compensate for voltage drops (up to 1 V) due to resistance from
test leads connected to your device under test (DUT), thus providing more accurate output
voltage. The power supply is initially set up to local sense mode by default. Refer to the
following sections for details of local and remote sense setup.
Local Sense
By default, the power supply is set up for local sense with jumpers installed. This is determined
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