HQ-Power PSS2010 Manual Del Usuario página 5

2. Switch the power supply on by pressing the power button (fig. p.1 #7).
3. The device is automatically set to the maximum levels, which are displayed on the LCD (fig. p.1 #1).
The earth connectors on the front panel (fig. p.1 #6) and the RS-232 connector (fig. p.1 #9) are directly
connected to the protective earth lead.
b. Limit Adjustment ('LIMIT' keys)
1. Voltage limit (U): press the 'U' key in the left part of the keypad (fig. p.1 #2) until the 'U-const' symbol on the
display starts flashing. The voltage can now be adjusted in 1V-steps using the adjustment wheel (fig. p.1 #3).
When the limit is set, press the 'ENT' key (enter) to confirm (or exit without adjustment). If by accident the limit was
set erroneously, erase or reset it using the 'CE' key. This will result in a return to the previous value.
The output voltage can be adjusted during the operation.
2. Current limit (I): press the 'I' key in the left part of the keypad (fig. p.1 #2) until the 'I-const' symbol on the display
starts flashing. Adjust the current in 10mA-steps (fine) or 100mA-steps (norm) using the adjustment wheel (fig. p.1
#3). When the limit is set, press the 'ENT' key (enter) to confirm (or exit without adjustment). If by accident the limit
was set erroneously, erase or reset it using the 'CE' key. This will result in a return to the previous value.
3. Power limit (P): press the 'P' key in the left part of the keypad (fig. p.1 #2) until the 'P-const' symbol on the display
starts flashing. The power can now be adjusted in 1W-steps using the adjustment wheel (fig. p.1 #3). When the
limit is set, press the 'ENT' key (enter) to confirm (or exit without adjustment). If by accident the limit was set
erroneously, erase or reset it using the 'CE' key. This will result in a return to the previous value.
A power adjustment will automatically affect the current output ; the valid voltage setting is kept.
c. 'KEY INPUT' settings
• Pressing the 'u' key will cause the output voltage to be adjusted up to the upper limit directly.
• The 'ENT' key is used to confirm the limit setting (see "6.b. Limit adjustment").
• The 'CE' key is used to clear / reset the limit setting (see "6.b. Limit adjustment").
• The 'N' (normal) and 'F' (fine) keys can be used to modify the adjustment step at which the selected parameter is
adjusted. Only one mode can be selected: it's either fine (an 'f' appears on the display) or normal.
• The 'L' key locks and unlocks all keys and the adjustment wheel to avoid inadvertent adjustment. Only the power
switch (fig. p.1 #7) remains active. Locking is indicated by the 'Locking' symbol on the bottom line of the display.
Press the 'L' key for about 2 seconds to unlock the keypad.
d. Output Adjustment ('I/O' key)
The output of the power supply can be switched on or off with the 'I/O' key. The status of the output is shown on the
bottom line of the LCD. Upon switching the device on, the output is switched off until it is activated with the 'I/O' key.
e. PC Connection: 'REM' key
At the rear side of the device is an RS-232 interface (fig. p.1 #9), which allows connection to a PC. With appropriate
software, the power supply can be controlled by the PC. Press the 'REM' key to allow communication between the
power supply and the PC. "Remote" appears on the bottom line of the display. All controls on the device itself
become invalid (except for the power button). Press the 'REM' key again for approximately 2 seconds to interrupt PC
communication and to release the keypad.
7. Troubleshooting, Repair & Maintenance
Before returning the device to your dealer for repair, check the following:
• If there is no image:
Is the unit switched on?
Is the power cable well connected to the device and to the mains outlet?
Are the fuses OK?
PSS2010 / PSS4005
- 5 - VELLEMAN