DHM-2056 “DUAL”Quick start guide4-step installation guideThe DHM-2056 can be programmed on the field using the following simple 3 steps*:Step No 1Power up the DHM-2056 by adding the external power supply (12VDC/1A) (#5).The DHM-2056 will need 20-30secs to initialize itself.The SSD (Seven Segment Display – #2) depicts the initialization status.Step No 2On power-up the DHM-2056 enters in “Chanel mode” and the “Channel LED” (#4) is on. Bypressing the “Channel/Profile” button (#1) the user is able to switch between “Channel” or“Profile” mode. With the “Up/Down” buttons (#3) select the desired RF output channelbetween VHF E05…E12 and UHF C21…C69. Wait 10secs for the PLL to lock.Step No 3Adjust the output RF level using the output 20dB attenuator (#6) from 70dBμV to 90dBμV.Step No 4Select the “Profile mode” and the Profile number beginning from No 1 and keep ascendingfor each modulator in the same CATV installation.For example:Profile No 1 for the first modulatorProfile No2 for the second modulator…Profile No10 for the 10th modulator etc…*The DHM-2056 offers advanced programming features from a PC software via a USB interface.

QM DHM-2056 Quick Start Manual