Description: Item Description: For sale today is one 10MHz isolated distribution amplifier board with four outputs for use with an OCXO or Rubidium source. This board has BNC connectors mounted horizontally on the front (picture with white BNCs). This board is larger than the original board as it now has 1" between BNC connectors vs 0.75" on the previous board. Boards with vertical connectors mounted on the back side are available in another listing, good for mounting on a rack panel. See my other listing for a four channel Distribution Amplifier Expander board. The BNC connectors are name brand (currently AMP TYCO). Nuts and washers for the BNC connectors are included. Condition: This is a new (for now hand assembled) board that will take a 0dBm sine wave input and produce four 50 ohm isolated 0dBm outputs. The input is 50 ohms and is also isolated from the board electronics. Power required is a minimum of 5VDC at under 50mA. The maximum input level with a 5VDC power supply is 6dBm. The power supply is not included. With a 10V power supply, the board can take up to 10dBm at the input and produce four 10dBm outputs. The op-amps are rated for 12.5V max, so a well regulated 12V supply could also be used. All noise and harmonics are down more than 60dB from the output at 0dBm and 55dB at 10dBm provided the input limitations are followed, see the last two pictures. The pictures were made with a 10dB attenuator between the output and the spectrum analyzer so the actual output levels are 10dB higher. A square wave can also be used as input provided the voltage is about 0.6V P-P (with 5VDC supply) or 2V P-P (with 10VDC supply). A resistor in series with the input can be used to reduce the voltage if needed. The board is approximately 2.65" by 3.9". The layout (with dimensions for the BNC connector centers) is provided in the pictures, as seen from the top side of the board. Dimensions are in MIL (1/1000 inch). The BNCs can be used to hold the board to a panel. Unlike other units that share a common driver between outputs, this board has individual drivers for each output. The separate drivers and the output transformers prevent issues on one output from affecting the others. Also, the transformer and a filter at the input keeps the four outputs closer in phase than distribution amplifiers with filters on each output. Also, if other listings only show a scope trace of the sine wave, you don't know if the signal is really "clean". Look for a spectrum plot. This board with the horizontally mounted (white) BNCs will fit on an enclosure front panel with a panel width of at least 4 inches such as in EBAY item 16362790992, an aluminum 120mm x 97mm x 40mm electronic enclosure for about $14. PayPal Confirmed Address: PayPal address must be confirmed and must be the same as the shipping address.Returns: All items are sold as-is unless otherwise stated. Returns: Returns accepted within 30 days. Feedback: Feedback is important to me, please email or contact me with any concerns, issues or problems before leaving feedback and give me the opportunity to work things out if needed. I always leave positive feedback after receiving feedback from the buyer, that way I know the buyer is happy and the transaction is complete. Shipping: Shipping is to USA only as this board is not RoHS compliant at this time.
Price: 89 USD
Location: New Hartford, Connecticut
End Time: 2024-03-14T21:59:43.000Z
Shipping Cost: N/A USD
Product Images
Item Specifics
Return shipping will be paid by: Buyer
All returns accepted: Returns Accepted
Item must be returned within: 30 Days
Refund will be given as: Money Back
Brand: Unbranded
Model: Distribution amplifier
MPN: Does Not Apply
Country/Region of Manufacture: United States
Modified Item: No
