Calibrating and Optimizing Circuit-Based Simulcast
Prerequisites:
This process has the following prerequisites:- Obtain the following:
- Radio Service Software (RSS) or Configuration/Service Software (CSS)
- Test Equipment (see Test Equipment)
- The following tasks must be completed:
- “Performing Calibration for an MLC 8000 Subsite Link Converter” in the MLC 8000 Configuration Tool User Guide.
- “Performing Calibration for an MLC 8000 Analog Comparator” in the MLC 8000 Configuration Tool User Guide.
When and where to use:
This process covers optimization/calibration for conventional analog circuit-based simulcast systems. This process must be performed upon initial system installation and annually (recommended) to maintain the audio quality of your simulcast system. If audio issues develop in overlap coverage areas, this procedure should be performed.Procedure:
- Start the calibration/optimization by performing the “Rx Wireline Alignment Procedure” in the Configuration/Service Software (CSS) Online Help. This procedure is required for circuit-based systems only.
- Set up test equipment. See Setting up Test Equipment.
- Perform coarse level adjustment for the transmit audio path. See Performing Coarse Level Adjustment (Transmit Audio Path 1 kHz).
- Perform a coarse level PL/DPL adjustment. See Performing Coarse Level Adjustment (Conventional Systems PL/ DPL Adjustment).
- Perform fine amplitude adjustment. See Performing Fine Amplitude Adjustment.
- Repeat 4; the PL/DPL level should be verified after all adjustments as the level can change with other adjustments.
- Perform a final system level check. See Performing a Final System-Level Check.
Optimization/calibration is complete.
- Repeat 4; the PL/DPL level should be verified after all adjustments as the level can change with other adjustments.