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MEMORY HiLOGGER LR8400-20 series < Data Logger < Products
Data Logger (Temperature, Voltage or other measurement / Multi channels)

MEMORY HiLOGGER LR8400-20 series
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Version Upgrade History for MEMORY HiLOGGER LR8400-20,LR8401-20,LR8402-20
Update time Version number Content
Apr. 2011 V1.23→1.24 Repaired bugs
1. During “Real-Time Saving” with the battery pack, if the battery ran out, the measurement could not have been completed, the saved file could not have been read from the HiLogger and the waveform could not have been displayed with the Logger Utility.
Mar. 2011 V1.22→1.23 Repaired bugs
1. When connecting to a large amount of network traffic, LAN communication was interrupted.
2. While file transfer was performed using FTP server function(LR8400→PC), if real-time saving was delayed, FTP server stopped working.
3. When waveform data was saved into a file after "(recording) Interval” and “Split Length” were set to particular values through a specific procedure, the file might not be able to be read by the Logger Utility.
4. When subnet mask was set to something other than (FF,00,00,00), (FF,FF,00,00), (FF,FF,FF,00), LAN could not be set.
5. File Transfer function became disabled when “FTP Auto Transfer” failed to send a file.
6. A cut-off frequency to be displayed on the screen was different depending on whether a channel of UNIT 4 was set to ON or OFF.
7. Scaling Setting : When “Dec (decimal fraction)” and “2-pt (2 points method)” are selected at a range of between 1-5 V, if 5→0.02 was set to Cnv 1 and 1→0.004 was set to Cnv 2, the value after conversion could not be entered.
8. When communicating by sending commands through USB, if delimiters alone (CR+LF) were sent via terminal software (Tera Term), the USB interrupt could no longer be used..
9. Even if a screen was changed to another screen, a focus frame remained at a background level.
Improved
1. As for absolute time format of CSV file, an Excel recognizable format is now selectable.
2. The error message about a waveform backup failure has been revised.
3. The display position of the [Batch Proc] on the screen has been changed to the more easily accessible position.
4. Maximum recording time to media is displayed now as reference.
5 When placing trace cursors on specified channels, if the channel of B cursor is set to OFF or has no measurement data, the difference between the A/B cursors is not displayed on the screen.
6. FTP server’s response time has been improved.
7. When communicating via a LAN connection, if command interface port (incl. the port of Logger Utility) does not respond due to external errors such as cable disconnection and then the normal status is recovered, the communication can be recovered also.
Sep. 2010 V1.21→1.22 Resolved bugs
  When all of the following conditions: (1) – (3) were fully met, the following symptoms were appeared. Those bugs are now fixed.
 
-1. Error occurring conditions (when (1) – (3) fully met):
  (1)
 Selected Logic or Alarm setting.
  (2)
 Selected certain specific combination of “Recording interval” and “compressed horizontal axis” setting for waveform display.
   
→Time/DIV ms s min h day
↓Interval 500 1 2 5 10 20 30 1 2 5 10 20 30 1 2 5 10 12 1
10ms × ◯ ◯ ◯ ◯ ◯ ◯ ◯ ◯ ◯ ◯ ◯ ◯ ◯ ◯ ◯ ◯ ◯ ◯
20ms ◯ × ◯ ◯ ◯ ◯ ◯ ◯ ◯ ◯ ◯ ◯ ◯ ◯ ◯ ◯ ◯ ◯ ◯
50ms ◯ ◯ × ◯ ◯ ◯ ◯ ◯ ◯ ◯ ◯ ◯ ◯ ◯ ◯ ◯ ◯ ◯ ◯
100ms ◯ ◯ ◯ × ◯ ◯ ◯ ◯ ◯ ◯ ◯ ◯ ◯ ◯ ◯ ◯ ◯ ◯ ◯
200ms - ◯ ◯ ◯ × ◯ ◯ ◯ ◯ ◯ ◯ ◯ ◯ ◯ ◯ ◯ ◯ ◯ ◯
500ms - ◯ ◯ ◯ ◯ × × ◯ ◯ ◯ ◯ ◯ ◯ ◯ ◯ ◯ ◯ ◯ ◯
1s - - ◯ ◯ ◯ ◯ ◯ × ◯ ◯ ◯ ◯ ◯ ◯ ◯ ◯ ◯ ◯ ◯
2s - - - - ◯ ◯ ◯ ◯ × ◯ ◯ ◯ ◯ ◯ ◯ ◯ ◯ ◯ ◯
5s - - - - ◯ ◯ ◯ ◯ ◯ × ◯ ◯ ◯ ◯ ◯ ◯ ◯ ◯ ◯
10s - - - - - ◯ ◯ ◯ ◯ ◯ × ◯ ◯ ◯ ◯ ◯ ◯ ◯ ◯
20s - - - - - - - ◯ ◯ ◯ ◯ × ◯ ◯ ◯ ◯ ◯ ◯ ◯
30s - - - - - - - ◯ ◯ ◯ ◯ × × ◯ ◯ ◯ ◯ ◯ ◯
1min - - - - - - - - ◯ ◯ ◯ ◯ ◯ × ◯ ◯ ◯ ◯ ◯
2min - - - - - - - - - - ◯ ◯ ◯ ◯ × ◯ ◯ ◯ ◯
5min - - - - - - - - - - ◯ ◯ ◯ ◯ ◯ × ◯ ◯ ◯
10min - - - - - - - - - - - ◯ ◯ ◯ ◯ ◯ × ◯ ◯
20min - - - - - - - - - - - - - ◯ ◯ ◯ ◯ × ◯
30min - - - - - - - - - - - - - ◯ ◯ ◯ ◯ ◯ ×
1h - - - - - - - - - - - - - - ◯ ◯ ◯ ◯ ◯
  (3)
 On the condition of the above (2), the waveform length was longer than approx. 8DIV.

-2. Error symptoms:
  (1)
 Waveform screen was flickered.
Waveform screen might not be updated.
  (2)
 When Waveform screen was saved, the color of BMP file was not normal.
  (3)
 Communication via USB became unavailable. When measuring with Logger Utility, communication was cut off.
  (4)
 Data was garbled.
(Multiple noise was present concentratedly.)
  (5)
 Abnormal operations: Some of the LR8400 function became unavailable or hung up, such as that Key did not work/Save function did not work.
Other minor bugs were resolved.
May. 2010 V1.02→1.21 Added functions
1. The LAN function is now supported. (Communication method: Logger Utility, HTTP, FTP, Mail and Commands)
Resolved bugs
1. When performing Pulse batch copy on the range setting screen, if the copy destination channels included a Logic channel, the batch copy could not be performed correctly.
2. In the communication command: When you continuously send MEMORY:GETERAL, It becomes impossible to operate when measuring it in Start by the manual operation.
3. While the setting list was being displayed on the setting screen of the HiLogger main unit, if setting commands were sent by Logger Utility, there were cases where the HiLogger could not be operated.
4. When the AB cursor is used with Ch Set and Horz or Zoom and Position are different by the channel that A_CH and B_CH are different, the value of B-A is not correct.
Improved
1. Response speed of display screen and waveform screen has been increased.
2. When saving the numerical calculation result, one line of Header to show the unit of each channel has been added.
Other minor bugs were resolved.
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