APM SP-300 Series, Руководство пользователя

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3. System Information
!
Warning!
O/P Relay set as ON is for special application, it is suggested to set as OFF in general
application to protect the equipment.
2.3 O/P Relay
There is an isolation relay to connect or disconnect the load from the output of the power source.
When ‘O/P Relay’ is ‘ON’, the relay always remains closed, regardless of the programmed output
state, even if the output state is OFF. When the output relay is set to ‘OFF’, the output relay will
close when the output state is ON and open when the output state is OFF. This is ‘normal’
operation for most power sources and should be the default setting.
For example, to set ‘O/P Relay’ as ‘ON’.
1. In the ‘System Setting’ menu, press the ‘O/P Relay’ soft key to display the drop down list.
2. Rotate the front panel knob to highlight the ‘ON’ option, then press the [Enter] key to confirm.
38
The screen is for information only.
For remote service and diagnostics,
the user may be asked to provide
some of the information shown here
to assist customer service.
Menu Operation
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In ‘Level’ mode, the output voltage waveform is determined by the selected waveform whose
RMS value responds proportionately to the DC input reference voltage with ranging from -10V
~10V. ‘Vout’ can be calculated using the following formula.
300V Range: Vout(ac) = |Vref(dc)|/10 Vdc x 300 Vac
150V Range: Vout(ac) = |Vref(dc)|/10 Vdc x 150 Vac
300V Range: Vout(ac) = Vref(ac)/10*1.414 Vac x 300 Vac
150V Range: Vout(ac) = Vref(ac)/10*1.414 Vac x 150 Vac
or
300V Range: Vout(dc) = Vref(dc)/10 Vdc x 424.2 Vdc
150V Range: Vout(dc) = Vref(dc)/10 Vdc x 212.1 Vdc
In ‘Volt Set’ mode, the output voltage responses linearly proportional to the input reference
voltage. ‘Volt Set’ can be set as 3V/5V/10V. For example set Voltage Set as 3V, ‘Vout’ can be
calculated using the following formula:
300V Range: Vout(ac) = Vref(ac)/3*1.414 Vac x 300 Vac
150V Range: Vout(ac) = Vref(ac)/3*1.414 Vac x 150 Vac
or
300V Range: Vout(dc) = Vref(dc)/3 Vdc x 424.2 Vdc
150V Range: Vout(dc) = Vref(dc)/3 Vdc x 212.1 Vdc
4. External Control
The AC source allows the user to make use of a controlling signal from external devices to
determine its output. When ‘Extern Control’ is ‘ON’, it will enable TTL or ANALOG control input
signals, please refer to Section 4.2 “Real Panel Description” on page 18 for detailed information.
When ‘Analog Volt I/P’ is ‘ON’, it will enable BNC signals input. Analog Volt I/P provides three
modes: ‘Amplifier’, ‘Level’ and ‘Volt Set’.
In ‘Amplifier’ mode, the output voltage is synthesized by the ‘Range’ setting on the main inter-
face and amplification of the external control voltage. The external input reference voltage range
is -10V~10V. The output Voltage can be calculated using the following formulas (when Vac=0,
Vdc=0 on the front panel display).
BNC input has a priority if ‘Extern Control’ and ‘Analog Volt I/O’ items set as ON at the same
time, but there will be no output if the ‘Extern Control’ item set as OFF.
Note
Menu Operation
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