Campbell Scientific SDM-IO16 16 Channel Serial I/O Module, Used

Campbell Scientific SDM-IO16, 16 CHANNEL SERIAL I/O MODULELike all the equipment we sell, this unit has been comprehensively bench tested, updated with the latest firmware, new batteries and desiccant*. It comes with a warranty. Buy with confidence that what you receive will perform as expected.This particular unit looks to be in near new condition with only a few minor scuffs and no wear on the wiring terminals.Note: The first image is stock. The other images are of the actual item. Shipping label printed within 8 hours of receipt of payment or the next business day.Shipping service at discretion of sellerWe are limited to the schedules and holidays of the carriers we use Detailed DescriptionThe SDM-IO16 expands the digital input and/or output capability of Campbell Scientific data loggers. When a port is configured as an input, each port can monitor logic state, count pulses, measure signal frequency, and determine duty cycle. An option in the pulse counting mode enables switch debounce filtering, allowing the SDM-IO16 to accurately count switch closures. The SDM-IO16 can also be programmed to send an interrupt signal to the data logger when one or more input signals change state.When configured as an output, each port can be set to 0 or 5 V by the data logger. A boost circuit allows an output that is set HI to source a current of up to 100 mA (at a reduced output voltage) for controlling external devices such as low voltage valves or relays. Up to 15 SDM-IO16 modules can be addressed allowing up to 240 ports to be controlled by the data logger. Data Logger ConnectionAn SDM Jumper Wire Kit (pn 32505) connects up to four SDMs to the data logger, and is available separately. The kit is recommended when multiple SDMs are connected to one data logger or for extremely short distances between the SDM and data logger. The CABLE5CBL-L cable is recommended for connecting a single SDM to the data logger, and for longer distances between the SDM and data logger. The Jumper Kit does not come with the unit but I can provide one at an additional cost if a request is made prior to shipping. Specifications FunctionExpands the digital input and/or output capability of a data logger.Number of Channels16Operating Temperature-25° to +50°CSDM & I/O Port0/5 V logic level ports (for connecting to the datalogger’s control/SDM ports)EMC StatusComplies with EN 61326:1997.Operating Voltage12 Vdc (nominal 9 to 18 V)Minimum Frequency0 Hz is reported if there are less than two high-to-low signal transitions in the measurement interval.Minimum Pulse Width244 μsDefault Switch Debounce TimingInput and ground must remain closed for 3.17 ms then remain open for 3.17 ms to be counted as a closure.Internal Clock Accuracy±0.01%, worst case (-25° to +50°C)Maximum Pulse Measurement Interval15.9375 sDimensions23.0 x 10.0 x 2.4 cm (9 x 4 x 1 in.)Weight350 g (12 oz) Maximum Frequency (with 50/50 duty cycle)Switch Debounce-Mode Turned Off2.0 kHz on all channels simultaneouslyDefault Switch Debounce-Mode Enabled 150 Hz on all channelsCurrent Drain-NOTE-Current consumption is roughly proportional to input signal frequency and number of ports used. Current drawn from any output must be added to the quiescent level to obtain the total current drain.Typical Standby600 µA (all ports high, no load, excludes pulse counting)Maximum3 µA (active with all 16 ports counting pulses at 2 kHz and no output load)OutputON/HI Voltage (no load)5 V (nominal)4.5 V (minimum)OFF/LO Voltage (no load)0 V (nominal)0.1 V (maximum)Sink CurrentOutput will sink 8.6 mA from a 5 V source.Source Current42 mA (@ 3 V)133 mA short-circuited to groundInputVoltage4.0 V minimum threshold (high)1.0 V maximum threshold (low)ProtectionInput clamped at -0.6 V and ±5.6 V relative to ground (via a 33 Ω resistor to withstand a continuous current flow of 200 mA)Source CurrentOutput will source 42 mA at 3 V.133 mA short-circuited to groundImpedanceBiased to +5 V relative to ground (by a 100 kohm resistor)OTHER EQUIPMENT:Additionally, I have Campbell power supplies and other related equipment listed in separate auctions. I also have a wide variety of related items that have not been listed. If you need any other peripherals to complete your data collection system, please ask, I may be able to assist. You will receive a shipping discount when multiple items can be combined into one shipment. *Possible updates depend on the particular piece of equipment. Thank you for considering our products. Before making a purchase, take a moment to read the following sales disclaimer to ensure a smooth shopping experience. 1. Descriptions:We work hard to provide accurate and detailed descriptions for all our items. However, colors may vary slightly due to monitor settings, and dimensions are approximate. Please, do not assume what is included in the sale, if you have any doubts please ask before you place your bid. Sales are completed with the understanding that you, the buyer, have independently determined the suitability of such products for its purposes prior to purchase. If you have any questions, feel free to contact us for clarification before making a purchase, TY!! 2. Condition:Our items are thoroughly inspected before listing, and we aim to represent their condition accurately. Please review the provided photos and descriptions carefully. If you have any concerns about an item's condition, contact us before placing your order. 3. Shipping and Handling:We are committed to prompt and secure shipping. We try hard to create a trackable shipping label within 8 hours of a sale, and we use reliable carriers. However, we are constrained by a 9-5 business day, and a Monday-Friday work week and carrier schedules. Once an item leaves our hands, we cannot control potential delays. Please track your package and let us know if any issues arise. 4. Returns and Exchanges:Unless otherwise stated within a listing, we accept returns within 3 days of delivery. Please contact us before returning an item, and ensure it is in its original condition. Return shipping costs are the buyer's responsibility, except in cases where we have made an error. Exchanges are subject to availability. 5. Customer Satisfaction:Your satisfaction is our priority. If you encounter any issues with your order, please contact us before leaving feedback. We are dedicated to resolving any problems promptly and ensuring your shopping experience with us is positive. 6. Special Requests:We welcome custom orders and special requests. If you have a specific item or modification in mind, please contact us to discuss details, pricing, and estimated completion times. Also, please check our other listings as we often have complementary items listed simultaneously or being prepared for sale. 7. Communication:We are here to assist you. Feel free to reach out with any questions or concerns through eBay's messaging system. We typically respond within 2 hours. Thank you for your interest, we look forward to your business.