CRS Series DIRECTIONAL COUPLERS 10 to 500 MHz / Multi-Octave / 3-Port / 10 and 20 dB Standard / Square Header PRINCIPAL SPECIFICATIONS Model Number Frequency Operating ¤ Coupling, Frequency Range, Bandwidth, dB, Sensitivity, MHz MHz Nom. dB, Max. CRS-10-165 30 - 500 CRS-20-110 10 - 400 30 - 300 300 - 500 10 - 400 20 - 200 10 ±1.0 10 ±1.0 20 ±1.0 20 ±1.0 ±0.25 ±0.25 ± 0.5 ± 0.25 ¤ Coupling is Referenced to the Input Directivity, Insertion CW Wt., dB, Loss,* VSWR, Input, Nom. Min. dB, Max. Max. W oz.(g) 30 25 20 25 0.7 1.0 0.6 0.4 1.3:1 1.3:1 1.4:1 1.25:1 5 0.5(14) 2 0.25(7) * Insertion Loss excludes Coupling loss Package Outline - CRS-20-110 GENERAL SPECIFICATIONS Impedance: 50 Ω nom. Operating Temperature: -- 55° to +85°C General Notes: NOTES: ± 1. Tolerance on 3 place decimals .010(.25) except as noted. 2. Dimensions in inches over millimeters. Package Outline - CRS-10-165 NOTES: ± 1. Tolerance on 3 place decimals .010(.25) except as noted. 2. Dimensions in inches over millimeters. 1. Merrimac offers a wide variety of directional couplers covering frequencies from 100 kHz to 18 GHz. They are ideally suited to monitoring forward and reflected power with minimal perturbation of the main line signal. 2. Applications of directional couplers include monitoring of incident and reflected power, signal sampling for control loops and test signal injection devices in BITE. 3. CRS series directional couplers may be used back-to-back as dual directional couplers or ordered with both coupled ports available as in the CRP series. 4. These units comply with MIL-C-15370 and can be supplied screened for compliance with additional specifications you designate for military and aerospace applications requiring higher reliability. 25Mar96 For further information contact MERRIMAC / 41 Fairfield Pl., West Caldwell, NJ, 07006 / 973-575-1300 / FAX 973-575-0531