Version history file EL 3000 / EL 9000 series
Legend:
(-) Removed bug or changed/corrected feature
(+) Added feature


v4.13
- Removed a bug where the actual values were updating very slowly in battery test mode

v4.15
- Removed a bug where the first pulse width of A, when starting A/B mode, would not be correct everytime

v4.17
- Actual value calculation of power of EL9080-600 produced slightly wrong results
- Actual value calculation improved, so value of power or resistance are more accurate now
- Resistance range 1 of EL9400-100 corrected (was 0...2.5R, now is 0...5R)
- Update to a newer software version does not kill internal serial number and user text anymore

v5.02
+ CAN users: added switching between our old CAN ID system and the new, Vector DBC compatible ID system (see updated user manuals for details) or ask per e-mail
- EL 9750-50 (HP) models: corrected nominal values of resistance ranges
- Error code for PF (power fail) alarm in alarm buffer now corrected to 0x1C (28)
- Removed bug where the pulse widths of A and B in Level A/B mode was totally wrong between 90.1ms and 99.9ms
+ Explicite alarm management:
	1. There are three possible errors with EL 3000 models: OT (overtemperature), OVP (overvoltage, switches input off), PF (power fail, means mains undervoltage, switches input off)
	2. There are two possible errors with EL 9000 models: OVP (overvoltage, switches input off), PF (power fail, means mains undervoltage, switches input off)
	   Remark: there is no OT error with EL 9000, because these models have temperature depending derating
	3. Manual control:
		a) Errors have to be acknowledged with the Input button. After this, the input can be switched on again, if it has been switched off by PF or OVP error
		b) Acknowledging clears the error display and the alarm buffer
	4. Digital remote control:
		a) Errors are acknowledged when reading the alarm buffer, unless there is at least one error still active, which will also clear the alarm display, 
		   which is now shown even in remote control mode
		b) The input can be switched on without acknowledging errors, after all errors are gone that switch off the input (PF, OVP)
	5. Analogue remote control:
		a) If errors PF or OVP happen while the input is switched on (pin REM-SB = HIGH), the input will be switched off and the errors have to be acknowledged by pulling REM-SB to LOW.
		   Then the input can be switched on again by releasing pin REM-SB or setting to HIGH
		b) Acknowledging also clears the alarm buffer and the alarm display, which is now shown below the analogue remote control status in the device LCD
	6. When using a GPIB or Ethernet interface card, errors with status "gone" are automatically acknowledged, because the cards permanently read the error buffer. Exception: the load
	   is in analogue remote control (see item 5)
- Switching from BATTERY mode to any other mode now clears the internal battery test time and Ah value which can be read via digital
- During remote control, switching from CV to any other regulation mode now resets the voltage set values (A, B, A/B) to zero, so they don't interfere with CC etc.
- Removed bug where network parameters could not be set using CAN interface or Ethernet interface (web site of device)
+ In BATTERY test mode, when the input is off, the Input button can now be used to reset time and Ah values to zero by pressing >3s

v5.04
- External trigger fixed: in external trigger mode the actual values are now always displayed

v5.05
- External trigger fixed: the external trigger stopped working if the input was switched off by pin REM-SB
- Navigation of the set values fixed: if external trigger was active and Level A/B selected, the set value cursor did not skip A/B pulse widths positions correctly
- Reset from REMOTE fixed: in battery test mode and when being in REMOTE control, using button INPUT ON/OFF to reset the device from REMOTE control also started the battery test
- Battery test fixed: battery test could be started while the input voltage was lower than Ulow threshold (the test would stop instantly anyway)