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USB-5201 User's Guide Specifications
22
Data logging
Table 9. Data logging specifications
Parameter Specification
Standalone power
supply
USB power adapter
2.5 watt USB adapter with interchangeable plugs (includes plug for USA)
Memory card type CompactFlash
Supplied memory card 512 MB CompactFlash card
Memory card host
access
USB Mass Storage Device (MSD)
File systems supported FAT16, FAT32
The device only creates 8.3 file names in the root subdirectory.
Log file format binary
Logging rate Min 1 second between entries, max 2
32
seconds, 1 second granularity
Data items logged Timestamp, temperature, or raw reading from selected channels, state of DIO lines, CJC sensor
readings
Throughput to memory
card
1 S/s per channel
Logging start methods Configurable:
Start Logging on Power Up – Logging begins 5 seconds after power on to allow hardware
to settle.
Start Logging on Button – Device is idle on power on. Press and hold the button until the
LED turns on to begin logging. The first sample is acquired 1 second after the LED turns on
unless less than 5 seconds have elapsed since power on.
Start Logging at Specified Time – Device is idle until the real-time clock indicates the
time is equal to or greater than the specified time, at which time the LED turns on. The first
sample is acquired 1 second after the LED turns on unless less than 5 seconds have elapsed
since power on.
Logging stop methods Stop on button press – To stop logging, press and hold the button until the LED turns off.
The device caches logged data in volatile memory prior to writing to memory card. When
logging, always use the button to stop logging and ensure data is written to memory card prior to
removing power.
Logging status
indication
The LED operations when connected to the AC adapter power supply are different than when
connected to USB:
Logging modes:
Logging Off mode: the LED is off (disabled).
Start Logging on Power Up mode: the LED turns on, but blinks off momentarily every
time data is captured.
Start Logging on Button mode: the LED is initially off. When the button is pressed and
held for approximately 1 second, the LED turns on and act the same as Start Logging on
Power Up mode.
Start Logging at Specified Time mode: the LED turns off, with a momentary on flash
every second until the specified date/time is reached. At that time, the LED turns on and acts
the same as Start Logging on Power Up mode.
Other indication:
To stop logging and store the remaining data to memory card, press and hold the button until
the LED turns off. It is then safe to remove the memory card.
If the memory card becomes full, the LED blinks rapidly (250 ms period).
If the memory card is removed while logging is in progress, the LED blinks rapidly (250 ms
period). Inserting a memory card stops the LED from blinking.
- User's Guide 1
- HM USB-5201 2
- Table of Contents 3
- USB-5201 User's Guide 4
- About this Manual 5
- Introducing the USB-5201 6
- Functional block diagram 7
- Installing the USB-5201 8
- Calibrating the hardware 9
- Sensor Connections 10
- Thermocouple connections 11
- Digital I/O connections 12
- Functional Details 13
- External components 14
- The memory card is full 15
- Specifications 18
- Accuracy 19
- Throughput rate to PC 20
- Digital I/O 20
- Temperature alarms 21
- Microcontroller 21
- Data logging 22
- Real-time clock 23
- USB +5V voltage 23
- USB specifications 24
- Environmental 24
- Mechanical 24
- Screw terminal connector 24
- Declaration of Conformity 26
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