Campbell Scientific CFM100 CompactFlash Module - Manual (Page 11)

CFM100 CompactFlash ® Module
5.2.2 Backup Power and Data Retention
The CompactFlash (CF) cards do not require power to retain data.
Typically, a CF card can be erased and rewritten a minimum of 100,000 times.
Industrial CF cards, graded for 2,000,000 write cycles, are recommended for
most applications.
6. Specifications
Storage Capacity: Depends on card size (up to 2 GB supported)
Dimensions: 10.0 x 8.3 x 6.5 cm (4.0 in x 3.3 in x 2.6 in)
Weight: 132.5 g
Operating Temp. Range: -35 ° to +65°C (-55° to +85°C optional)
Typical Access Speed: 200 to 400 kbits s -1
Memory Configuration: User selectable for either ring style (default) or
fill and stop.
6.1 Power
The CFM100 receives 12 V power from the datalogger through the peripheral
port. The following currents are for the CR1000 with the CFM100 attached
and can vary with the card.
Writing to card with
RS-232 port active:
30 mA (avg.)
Reading from card with
RS-232 port active:
20 mA (avg.)
Writing to card with
RS-232port not active:
20 mA (avg.)
Reading from card with
RS-232 port not active:
15 mA (avg.)
Low Power Standby State: 700 to 800 μA
Red or green LED
continuously on:
Add 1 mA to current drain
Orange LED
continuously on:
Add 2 mA to current drain
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