1.Constant Temperature Crystal Module OCXO 10MHz 20M 30M 80M Frequency Reference Module 2.This module outputs the frequency accuracy of the 10MHz signal (200ppb), has two signal outputs, and one is a standard 10MHz signal. 3.The other is a 10MHz multiplier signal. The multiplier signal has 9 selection frequencies, which are 2X, 3X, 3.125X, 4X, 5X, 5.3125X, 6X, 6.25X, 8X. 4.The different multipliers are by the JP1 jumper pin. 5.Correct the deviation of the 10Mhz output frequency (2.0ppm) with the RV1 potentiometer. 1. P1: Power input interface (7-9V). 2. P2: 10MHz signal output interface (10Mhz amplitude: 3Vpp) SMA interface 3. P3: N frequency output interface of 10MHz signal (Nx10Mhz amplitude: 5Vpp) SMA interface 4. RV1: Correct the deviation of the 10Mhz output frequency (2.0ppm) 5.JP1 jumper needle selection S1=0,S0=0, OUT = 4X S1=0,S0=M, OUT = 5.3125X S1=0,S0=1, OUT = 5X S1=M,S0=0, OUT = 6.25X S1=M,S0=M, OUT = 2X S1=M,S0=1, OUT = 3.125X S1=1,S0=0, OUT = 6X S1=1,S0=M, OUT = 3X S1=1,S0=1, OUT = 8X 0 = connect directly to ground(L) 1 = connect directly to (H) M = leave unconnected(floating) Note: Different Batches May Have Differences In Product Appearance, Color, And Printed Characters, Which Will Not Affect The Use Colour:As Shown Material:PCB Package Contents: 1 x Constant Temperature Crystal Module Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is 1-3cm.