Hach 900 MAX, Instrument Manual

Page: 123 / 160

Appendix B
Page 121
8990apdx_pfeatures.fm
Programming Features
Slate Memory Mode
Slate mode causes logging to stop when memory becomes full. The sampler
continues to operate but no more data is logged. Use this mode to keep data
from the beginning of the logging period.
Wrap Memory Mode
In Wrap mode, when memory becomes full, the oldest reading is discarded
each time a new reading is taken. When memory becomes full, the sampler
continues to operate and log data. This mode is best used when interested in
the most recent data readings.
Memory Mode Configuration
To configure the Memory Mode for either Slate mode or Wrap mode:
1. Select Data Log from the Advanced Options menu.
2. Select Memory Mode using the
UP
and
DOWN
keys, then press
ACCEPT
.
3. Press
CHANGE CHOICE
to choose either Slate or Wrap, then press
ACCEPT
to complete.
Data Logging Configuration
To configure the sampler for data logging:
Note: If logging is enabled on any
channel, then that channel will have
an arrow in front of it to signify that
the channel is logged.
1. Select Data Log from the Advanced Options menu.
2. Highlight Select Inputs using the
UP
and
DOWN
keys and press
SELECT
.
3. Highlight the channel you wish to log using the
UP
and
DOWN
keys, then
press
SELECT
.
4. Press
CHANGE CHOICE
to cycle between Logged and Not Logged, then
press
ACCEPT
.
5. Enter a logging interval using the numeric keypad, then press
ACCEPT
.
Valid logging intervals are shown on the status bar along the bottom edge
of the display for your reference.
6. Select another channel to configure or press
RETURN
to back up one step
or press
MAIN MENU
to return to the Main Menu display.
Diagnostics
From the Main Menu, select
OPTIONS> ADVANCED OPTIONS > DIAGNOSTICS.
In addition to the automatic diagnostics that are performed upon power up,
the following manual diagnostics are available:
• Distributor Test • LCD Test
• Event List • Liquid Sensor
• Keypad Test • Velocity Analysis