* SCU:
------
4025:
  As of 3725
3725:
  Expanding of the private MIB for all kinds of reserve systems: the value of
  the reflection of the transmitters in W or mW. The precision W/mW explicit by
  an extra OID
3125:
  As of 2025
2025:
  As of 1225
1225:
  As of 2924
2924:
  As of 2624
2624:
  As of 2224
2224:
  Exchange of the time synchronization between SCU and exciters.
  Monitoring of the Liquid Control Unit LCU500 via SNMP implemented.
1224:
  For N+1 reserve system: a TX-A is currently on dummy load due to its alarm,
  unlocking of faults will bring it back to the operating antenna, if it free
  of alarms
1124:
  Only for N+1 system: the information stand in 'location' of the transmitters
  are shown under their label on the GUI
  Bug in Dual Drive System: after the reboot, SCU opens the interlock loop of
  both exciters for few seconds, the output power is than switched off.
  Bug fixed with this version
3323:
  As of 3223
3223:
  As of 3023
3023:
  This version ist backward compatible with the Dual Drive system without test
  load for RF-output. If the test load is deactivated, the position of the 
  related RF-switch has no effect for the monitoring of the interlock loops.
1823:
  The RF-output of Dual Drive System can be switched to a test load via an 
  RF-switch. This persistent function can be activated/deactivatedi.
  The replacement of the exciters in a dual drive system does not happen, if
  a cooling alarm exists.
0923:
  As of 4922
4922:
  As of 3022.
3022:
  As of 2322.
2322:
  As of 2222.
2222:
  As of 2022.
2022:
  As of 1622.
1622:
  As of 1022.
1022:
  As of 0822.
0822:
  Position of 'Antenna' and 'Dummyload' symbols for N+1 TX-B corrected.
  Feedback of 'Clear Faults' symbol longer highlighted upon triggering
  for better visibility.
0622:
  N+1: Switching the input automatic of a TX-A is also applied to TX-B
  if it is set to the same program.
0322:
  As of 0222.
0222:
  As of 0122.
0122:
  As of 4821.
4821:
  As of 4521.
4521:
  As of 3421.
3421:
  As of 3321.
3321:
  N+1 Reserve for gapfiller further elaborated.
3221:
  As of 2821.
2821:
  As of 2521.
2521:
  As of 2421.
2421:
  SNMP: The variables for sat. receiver and gapfiller had not appeared.
  Passive Reserve for gapfiller completed.
0921:
  Interlock loop not needlessly early opened before switching over.
0121:
  N+1 Reserve for gapfiller completed.
3320:
  SNMP:
  The RFPresent OIDs for TXA and TXB were erroneously always UNDEFINED.
  The OIDs for the frequency reference of the attached TXs were missing.
2920:
  Manual switching of N+1 TX-B to antenna/dummyload will now be logged.
  Reflection fault on a TX is now displayed.
  Reference frequency fault on a TX is now displayed.
  Additional switch-over delay if the reserve TX reports a warning,
  to observe its state, trying to avoid a useless unsuccessful switch-over.
2620:
  Gapfiller implemented in all reserve systems.
  Error correction: 5+1 reserve was wrongly managed as 2+1 reserve.
2120:
  Now worked out for all reserve systems in Series 5200.
0620:
  A power amplifier fault no longer causes an unneeded switch-over.
  Missing all TS input signals is now reported as in the exciters and
  accordingly displayed in the Web-IF.
4819:
  As of 4519.
4519:
  As of 4419.
4419:
  The message 'RF output alarm' is now delayed to give the system time to
  stabilize before emitting an unfounded message.
  Rework for N+1: A TX-A which is switched off by SCU will in no case be
  switched over to TX-B. Adjustable delay for consecutive switch-over.
3619:
  As of 3519.
3519:
  Workout for new Low and Medium Power series.
  N+1 and Passive Reserve implemented.
4418:
  First release.

* Exciter:
----------
4025:
  Web-Interface:
  Setup of monitoring interlock loop moved to Interlock->Main Setup.
  The monitoring of the interlock loop should not be switched off lightly,
  as this can easily cause significant damage.
3725:
  The precision W/mW of the return loss explicit by an OID
3125:
  The private MIB has additionally an OID for the return loss in Watt.
  The display of the cooling temperature now stable
  Web-IF, item 'RF Output/Main Setup': the information 'Nominal Power' can go
  up to 120kW
2025:
  Baudrate to GNSS chip increased to 115200 to prevent transmission errors
1225:
  Item Cooling on the GUI:
  - the attached units of the cooling also visible for air cooling system
  - a new setting for liquid cooling added: on a cooling alarm the modulator
    should/should'nt mute
  Only for the ODC operation:
  - New variant (50W) added
  - The unit ODC5000 has now the firmware 0525
2924:
  The value of output power displayed on the GUI reaches the value 0W faster in
  case of lost input signal
2624:
  New firmware of the Exciter-Interface-FPGA and DUC-FPGA: version 2624. Higher
  Baud rate of the communication between GPS-module and FPGA
2224:
  New firmware of the Exciter-Interface-FPGA, version 1324: the changing from
  the warning state of the liquid cooling system to alarm state now seamless.
  DAB: if the TIST Mode on the modulator is set to absolute, but the NTP client
  is deactivated, a warning occurs.
1224:
  New firmware of the DUC-FPGA: Version 1124. Safer firmware updating. Correct
  the version of compound device. The regulation of reference oscillator runs
  with too large control leaps, bug fixed.
  DVB-T: corrected the value of network delay wenn operate with IP as source.
  GUI: display of the liquid cooling system completed.
1124:
  Updating of firmware for Eurotek modulator and Foxtel SAR-RX from web browser
  now available
3323:
  LCU5000 implemented
  Setting of coupler attenuation for low power TX on GUI possible
3223:
  Timestamp can be selected as absolute/relative
3023:
  as of 1823
1823:
  as of 0923
0923:
  The item 'amplifiers/status' of GUI now easier to use due to the additional
  navigation on the bottom.
  TSoIP test output of the modulator now definitively on port eth3.
  Link speed of IP inputs manually selectable.
  Display of the LEDs for ASI/IP inputs in 'Status' corrected.
  New firmware of the DUC-FPGA: Version 0223. Calibrating process for unstable
  sources of references (not for GPS-reference) optimized.
  New firmware of Exciter-Interface-FPGA: Version 0923. New criterion for the
  OCXO warning added. The evaluation of I2C-communition SCU-exciters now more
  transparent.
  SAT-RX-Q: new firmware, version 100261.
4922:
  Outdoor Case Unit:
  Loading of the page 'Service List' in the Web-IF accelerated, due to the 
  optimized bus communication with the remultiplexers.
  The service-ID on the output of remultiplexers can be modified by users.
3022:
  Implemented new sat. receiver module.
2322:
  DVB modulator: Transport stream status indications could be nonsense
  when no valid ASI packet was received, fixed.
  This release replaces the previous 2222.
2222:
  DVB modulator: Transport stream status indications had no longer worked
  correctly, fixed. PLP fill level is now correctly displayed.
2022:
  Configurable number of exciter supply units is not available with
  Medium Power exciters, they have a supply unit installation like
  Low Power devices and monitoring their presence results in wrong warnings.
  When 'Power Amplifiers' or 'RF Output Power' monitoring is disabled,
  a note is displayed on the corresponding status pages in the Web-IF.
  This release replaces the previous 1622.
1622:
  Precorrector curves were often incorrectly stored and reloaded, fixed.
  Configurable number of exciter supply units in Web-IF with High/Medium Power:
  If an expected unit is not detected present, a warning will be emitted.
  The presence of the supply units is displayed in the Web-IF.
1022:
  New firmware for ACM5000:
  Module overcurrents could have been wrongly detected.
0822:
  DVB-T modulator: Unwanted muting on missing MIP fixed.
  New firmware for ACM5000: Support for new high current sensors.
0622:
  ASI RX Parameters in Web-IF with ATSC3.0 removed, there is only IP.
  New 'Outdoor Case Unit' variant:
  Without remultiplexer and sat. receiver,
  with direct modulator inputs and frequency reference module for SFN operation.
  New firmware for Exciter Interface FPGA Hardware 1:
  Corrected Low/High-Power detection.
  New firmware for ODC5000:
  Recovery for locked I2C bus.
0322:
  The input signal indications were not always reliable.
  They could report missing input signal, although present.
  Fixed.
0222:
  DAB modulator implemented.
0122:
  Added support for up to 8 additional cooling units, numbered from 3 to 10.
  They appear in the Web-IF only when the corresponding hardware interface is
  installed and detected.
4821:
  First Implementation of the 'Outdoor Case Unit'
  with DVB remultiplexer and quad sat. receiver.
4521:
  New firmware for Digital Upconverter FPGA and Exciter Interface FPGA HW 2:
  Support for alternative Flash chips to ensure provisioning.
  No need to update already running systems, new deliveries come with latest SW.
3421:
  New firmware for Digital Upconverter FPGA:
  GNSS jitter filter, fast locking, finer phase detector.
  New firmware for Exciter Interface FPGA:
  The SCU was erroneously turned on during boot,
  which could result in wrong system detection.
3321:
  Power loss compensation was not working.
3221:
  Sat. receiver: Added new setups and indications for Service List Enable,
  ASI Output Source, Reference Status, Ident Numbers; added facility for
  upgrading the module.
  GPS frequency reference: Implemented optional jitter filter.
  Ambient temperature sensor: Can now be selected as installed or not;
  confusing temperature display does then no longer appear in the Web-IF.
2821:
  New firmware for Exciter Interface FPGA Hardware 1:
  Correction for external reflection trigger, it could erroneously be raised
  and RF power turned off without an event log entry.
2521:
  Regression in release 2421 fixed: Display and control of the event log and
  settings log including the tool tips were no longer corrcectly working,
  the power amplifier pages were also concerned.
2421:
  Gapfiller: Additional indications and settings for the echo canceller
  and fixed unstable RF fault notification.
  Periodic reinitialisation of the local 1HU display to recover it
  when it sometimes becomes blank.
0921:
  New firmware for Exciter Interface FPGA: Improved ESD protection.
0121:
  New firmware for ACM5000: Reasonable return loss indication with RF underflow.
3320:
  Exciter alarm is now raised when RF has been turned off due to
  1PPS fault, SFN fault or MIP fault.
  Low-Power: New unit DTR5203 integrated.
  New firmware for ACM5000: Fan faults were no longer detected,
  incurred in release 2120.
2920:
  DVB, ISDB und ATSC modulators: Stuck error messages which are not
  applicable to the currently running T/T2 and SFN/MFN modes are
  now cleared.
  When connection between exciter and all amplifiers is lost,
  an amplifier fault is now reported.
  Low-Power: Error correction: On lost connection to the amplifier,
  reflection could be erroneously reported to the SCU.
  New firmware for Exciter Interface FPGA: Finer regulation of
  GPS controlled reference frequency.
2620:
  Gapfiller implemented.
2120:
  Error correction for previous release: Cooling units were not switched on
  when their monitoring was switched off. 
  New firmware for Exciter Interface FPGA: Diverse reworks.
  New firmware for ACM5000: Optimised monitoring speed levels for the fans.
0620:
  Low-Power: Debounced front panel keys to protect against disturbances
  from RF interference.
  Medium-Power: Support for new fan type in the power amplifiers.
4819:
  DVB, ISDB und ATSC modulators: ASI sync. timeout now adjustable.
  Display of the sat. receiver temperature added.
4519:
  DVB modulator: ASI sync. timeout set fixed to 20 ms.
  Sat. receiver: The "Request CA" flags in the service list can no longer get
  lost on change of RX parameters.
4419:
  Interlock loop can now be configured as not installed, like cooling units.
  Introduced "Monitoring Alerts" for disabled monitoring of facilities which
  are configured as installed; visible on the TX Status page, and warnings are
  emitted to the log.
  New firmware for Exciter Interface FPGA: Updates for Low/Medium Power TX
  with reworked frequency correction tables and redefined reserve system coding.
  New firmware for ACM5000: Optimised monitoring of reflection to avoid
  endless retries, corrected fan speed evaluation.
3619:
  Updated firmware upgrade file in the package for Exciter Interface FPGA
  in the latest Low and Medium Power hardware. No need to update already
  running systems. New deliveries come with latest SW. This release is
  just for reference.
3519:
  Workout for new Low and Medium Power series.
  Rework of cooling monitoring: Alarm and warning may never appear at same time,
  alarm has priority.
4418:
  First release.

* General:
----------
4025:
  New: SNMP now also available for local LAN
  Bug fixed: SNMP runs with the IP address assigned by DCHP
3725:
  As of 3125
3125:
  The http server can now support HTTPS
  SNMPv3 with all secutity level possible. 
2025:
  As of 1225
1225:
  DHCP can be enabled/disabled on the GUI in Network Configuration 
  A new type of the flash memory of the CPU added to the kernel
2924:
  As of 2624
2624:
  As of 2224
2224:
  Validity of the subnet entry is checked.
  The state of time synchronistion with NTP server is displayed by a LED.
  In a reserve system, this state is checked by the SCU and forwarded to the
  exciters. Warning occures, if the time server is activated but the
  synchronisation fails.
  SNMP-configuration on GUI interface: passwords only for the user 'admin'
  visible and changeable
1224:
  As of 1124
1124:
  All temperatur values displayed either in °C or °F, value of the return loss
  optionally in dB or W/mW
3323:
  As of 3223
3223:
  As of 3023
3023:
  Timezone 'Etc/GMT' added to the list of supported timezone
  The key 'Enter' of the virtual keyboard of the local display is now forced to
  be visible.
1823:
  As of 0923
0923:
  As of 4922
4922:
  Web-IF:
  The cursor of the input element is now visible in the widely used web browsers
3022:
  As of 2322.
2322:
  As of 2222.
2222:
  SNMP-MIB: Corrections to avoid error messages in MIB browsers.
  IP Remote Interface: Half Duplex Mode is now selectable.
  Process Respawn: Now unlimited, to not lose a process on unexpected
  error conditions.
2022:
  As of 1622.
1622:
  As of 1022.
1022:
  As of 0822.
0822:
  As of 0622.
0622:
  As of 0322.
0322:
  As of 0222.
0222:
  As of 0122.
0122:
  As of 4821.
4821:
  SNMP-MIB: Added DESCRIPTION in TEXTUAL-CONVENTION, even if empty;
  some MIB compilers refuse if this is missing.
4521:
  As of 3421.
3421:
  Web IF: During a running update, the "Software Update" page can now be left
  and revisited without loosing the status display and log.
3321:
  As of 3221.
3221:
  As of 2821.
2821:
  As of 2521.
2521:
  As of 2421.
2421:
  As of 0921.
0921:
  As of 0121.
0121:
  As of 3320.
3320:
  As of 2920.
2920:
  The operation hours counter
  will no longer be overwritten upon loading a configuration.
  Corrected enum names for the ATSC injection levels in the MIB:
  Must not start with a digit!
2620:
  The settings RF-On/Off and Local/Remote
  will no longer be overwritten upon loading a configuration.
2120:
  As of 0620.
0620:
  As of 4819.
4819:
  As of 4519.
4519:
  As of 4419.
4419:
  The serial number will no longer be overwritten upon loading a configuration.
3619:
  As of 3519.
3519:
  SNMP: Deprecated traps from the IRT MIB are no more sent.
  SNMP: MIB download: Only the device related MIBs are now
  delivered to keep the amount of data small.
4418:
  First release.