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.<br><br>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; (N*10Mhz 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 Not Affect The Use Colour:As Shown Material:PCB<br><br>Package Contents: 1 x Constant Temperature Crystal Module<br><br>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.