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CDMALink 2-Way Logging Transmitter


CDMALink 2-Way Logging Transmitter

    • Easy-to-use Software includes setup program.
    • Terminal strip with screw terminals for I/O and power connections
    • Operates 8-16VDC
    • TCXO real-time clock with battery backup (+/-4ppm)
    • Built-in solar panel regulator
    • Support for up to 16 measurements of the following inputs: • SDI-12/RS485 (shared as is done in the Bubbler) • 5 Analog inputs: 1. Two (2) single ended inputs (range 0-5V) 2. Two (2) differential inputs (range +/-39mv, +/-312mV, +/-2.5V) 3. One (1) 4-20mA input • 2 digital inputs. They can be used for tipping bucket, frequency, andon/off inputs • internal temperature • Battery voltage
    • Options to average or accumulate any measurement.
    • Lightning protection (Gas Tube) on all external inputs.
    • User specified equation on any measurement .
    • User specified alarm detection on any measurement.
    • 2 LED for verification/diagnostics.
    • Log capacity of 240K of data accessible via CDMA and direct connect
    • Switched Battery Output
    • Also operates as a standalone recorder without Telemetry
    • USB slave for serial connection to PC. THE USB PORT WILL NOT SUPPORT typical USB devices like memory sticks, modems, etc.
    • RealTime Clock operates with internal lifetime battery
    • Telemetry via CDMA
    • 1. Periodic transmissions at user set times with data in user selectable format (pseudobinary B, C, SHEF & ASCII)
    • 2. Support for primary and secondary master stations via CDMA
    • 3. Alarm transmissions as they are detected.
    • 4. Diagnostics to help track of the amount of data being sent and the performance of the telemetry
    • 5. Support for remote commands for data collection, maintenance or control of two on/off devices
    • 6. Optional authentication of incoming messages to insure they are from a trusted source & optional authentication of messages sent to SUTRONWIN via CDMA
    • 7. SMS transmissions if CDMA fails or in place of CDMA
    • 8. Extremely affordable
    • 9. CDMA modems use wireless cellular technology and provide data access in most areas where a typical cell phone works.
    • Surface waterlevel,flow and quality
    • Groundwaterlevel and quality
    • Offshore X‐Linking
    • Mining / geotechnical
    • Weather X‐Linking and warning
    • Oceanic X‐Linking and warning
    • Oil and gas production
    • Any low‐power,remote data acquisition system


    File Name Revision Number Release Date File Size Description
    CDMALink Datasheet
    Apr 2, 2015 443.40KB
    X-Link with Display (6661-1324-1) Datasheet
    1.0 Apr 28, 2015 175.63KB
    X-Link Display is an accessory 


    File Name Revision Number Release Date File Size Description
    XLink O&M Manual
    1.76 Feb 2, 2018 7.59MB
    New Enhancements from previous release (v1.72):
    LinkComm Quickstart Guide
    3.4.9 Sep 10, 2018 939.07KB
    Quick start guide updated to show recent changes:


    File Name Revision Number Release Date File Size Description
    CDMALink Product Presentation
    Apr 1, 2014 17.76MB
    Product Presentation for CDMAL 


    File Name Revision Number Release Date File Size Description
    LinkComm for Android
    3.4.15 Feb 7, 2019 43.58MB
    Change History:
    LinkComm for Mac OS X
    3.4.15 Feb 7, 2019 49.02MB
    Change History:
    LinkComm for PC
    3.4.15 Feb 7, 2019 62.51MB
    Change History:

    Tender Specifications

    File Name Revision Number Release Date File Size Description
    CDMALink Tender Specifications
    Jan 16, 2015 16.54KB

    Wireless Cost Estimator

    File Name Revision Number Release Date File Size Description
    Wireless Cost Estimator
    Aug 5, 2014 125.50KB


    Specifications subject to change without notice

    Measurement Interval 1 second to 24 hours
    Number of Measurements 16 supported
    ANALOG 2 Single ended, 2 Differential, 1 4-20ma
    Single-Ended Analog 0-5 V (with respect to ground)
    Number available 2
    Input Range 0 to 5V (with respect to ground)
    Resolution 0.298 μV
    Noise (p/p) @250C 12.0 μV (p/p)
    Accuracy @250C 0.003% (typ) Midscale 0.004% Max
    Input Impedence > 1 MegOhm @250C
    Differential Analog
    Number Available 2
    Range (SW selectable) ±39mV; Common Mode Voltage Range .3 to 3.9 Volts ±312mV; Common Mode Voltage Range .3 to 3.9 Volts ±2.5V ; Common Mode Voltage Range .1 to 4.9 Volt
    Resolution 4.657 nV @ ±39mv scale, 37.25 nV @ ±312mv scale, 298 nV @ ±2.5v scale.
    Noise (p/p) @250C 1.6 μV (p/p) ±39 mv / 312 mv scale 5.0 μV (p/p) ±2.5 v scale
    Accuracy @250C 0.004% max @±2.5v scale
    Input Impedance @250C >5 Meg Ohm 312mV FS Differential
    4-20 mA Analog
    Range Resolution Accuracy @250C Loop Power Loop Resistance 0 – 22mA
    Digital Input 1, 2 Tipping Bucket Type Switch Contact Type. Pulse Width: 30ms – 120ms. Range: DC to 120 tips/min. (min).
    Digital Input 1,2 Frequency Type
    Minimum Frequency Maximum Frequency Input Range 2.8 Hz 10 KHz 0 – 5 V
    Digital Input 1,2 Counter Type
    Maximum Frequency 10 kHz (with no debouncing) 300 Hz (with debouncing)
    Input Range 0- 5 Volts
    Range -40 to +60°C
    Accuracy ±3 degrees
    Input Voltage 8-16VDC 10 V minimum for SDI-12 sensor support Reverse power protected
    Current Consumption 0.5mA standby typ (all sensors unpowered) 8 to 20mA active typ
    CDMA Transmission
    Power Connection 2 position terminal strip
    SDI-12 Port 3 position terminal strip
    Red Warning LED Indicates setup or operation error
    Green Heartbeat LED Indicates unit operating properly
    Earth GND .2” screw terminal
    Temperature -40°C to +60°C
    Humidity 0-95% Non-condensing
    Clock Internal real-time clock w/battery backup.
    Accuracy ±9.3 s /month(Max) -40 to +60°C. (First Year)
    Accuracy ±2.4 min /year (Max) -40 to +60°C. (First Year)
    Accuracy ±4.5 min / 10 years (Max) -40 to +60°C. (10 Years)
    Log Capacity 240,000 readings, flash memory
    USB Port Connector Serial Communications / USB port
    Mini-B Male USB connector on logger to be connected to USB Type-A Male (Windows PC). LinkComm software included for USB port communications
    Internal Solar Panel Battery Charger 5 – 20W Panels. (Max 30 Watts) Automatic charge & float modes protect gel cell & acid batteries.
    CDMA modem Quad Band CDMA Modem SMA-F Output RF Jack Modem factory installed, internal with RF output jack for antenna.
    1 USB Mini-B Male (5 pin) Connector Serial Communications – USB. Not full function USB port. CDMA Modem SDI-12. RS485 (future support)
    SDI-12 interface V1.3 compliant recorder
    Supports up to 16 SDI-12 sensors Automatically combines requests to the same device +12V @ 500mA
    DIMENSIONS Operating Shipping


    5.3″ (13.5 cm) 14 in. (35.6 cm.)


    3.8″ (9.7 cm) 10 in. (25.4 cm.)


    1.3″ (3.4 cm) 6 in. (15.3 cm.)


    1 lbs. (.46 kg) 2 lbs. (0.9 Kg)
    NOTES: Please refer to the XLink Product Family User Manual for full product specifications and variations.

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