The Blonder Tongue FOCN-20X Series is a low-cost, compact 2-way node designed to deliver the full array of CATV services presently available and those planned for the future. These services include video (analog and digital), high speed data and telephony.  The FOCN has applications for the direct fiber transmission of CATV RF signals in MDU, industrial, government and educational facilities, or wherever a high performance compact indoor node is required.  The unit is constructed with high quality components enabling it to meet or exceed its performance specifications in an uncontrolled indoor environment with wide temperature variations.

• Forward Wavelength: 1310/1550 nm
• Optical Input Range: -8 dBm to +2 dBm
• CNR @ - 1 dBm: >54 dB
• CSO/CTB @ - 3 dBm: 65/68 dBc
• Forward RF Bandwidth: 54-870 MHz
• Return RF Bandwidth: 5-42 MHz
• Return Laser/Power:
• 7420-2: FP 3 dBm, 2 mW (non-isolated)
• 7420-3: FP 3 dBm, 2 mW
• 7420-4: DFB 4.8 dBm, 3 mW
• 7420-5: DFB 4.0 dBm, 2.5 mW
• Return Wavelength:
• 7420-2: 1310 nm
• 7420-3: 1310 nm
• 7420-4: 1310 nm
• 7420-5: 1550 nm
• Physical Dimensions: 6” x 3” x 2 ”

The FOCN-20X Series contains several models to meet many applications. All models have at their core a 1310/1550 nm optical receiver with exceptional optical sensitivity and 28 dBmv RF output level at a -1 dBm optical input. The difference between each model is the return path capability. Two way models are available with FP or DFB lasers. The FP models are offered in both isolated and non-isolated 1310nm, 3 dBM (2mW) lasers. DFB models come with a 1310 nm, 4.8 dBm (3mW) or a 1550 nm, 4 dBm (2.5 mW) laser. All two-way models have a return RF bandwidth of 5-42 MHz. Other standard features include LEDs for optical input and laser status. Powering is via a 12 VDC supply and can be accomplished in either of two ways. To power locally, a separate power connector marked “+12 VDC power in“, is provided. Alternately, the unit can accept 12 VDC from its RF output connector, thus
permitting remote powering by diplexing the 12 VDC supply onto the RF output.

Receivers
Stock No. Model Description
7420-1 FOCN-S4S-201 870 MHz Rx
7420-2 FOCN-S4S-202 870 MHz Rx With FP 3 Non-Isolated dBm Return Tx
7420-3 FOCN-S4S-203 870 MHz Rx With FP 3 Isolated dBm Return Tx
7420-4 FOCN-S4S-204 870 MHz Rx With DFB 4.8 dBm Return Tx
7420-5 FOCN-S4S-205 870 MHz Rx With DFB 4 dBm 1550 nm Return Tx
Accessories
7416 ACCS-PSPI-12 12 Volt Power Supply/Power Inserter