Instruction Manual

M2 User Manual

UP. Momentary push of UP control tunes frequency up one increment in TUNER BAND mode, when

held for three seconds tunes faster. UP selects next stored preset station in PRESETS mode (no faster

mode, one push per preset). Audio muting is active while tuning. Selects next item in other menus and

is used for other functions as described herein.

DN. Momentary push of DN control tunes frequency down one increment in TUNER BAND mode,

when held for three seconds tunes faster. DN selects next stored preset in PRESETS mode (no faster

mode, one push per preset). Audio muting is active while tuning. Selects next item in other menus and

is used for other functions as described herein.

Select Control. When monitor has acquired any station in TUNER BAND mode and SELECT switch is

held for three seconds, monitor goes into PRESETS store mode; PRESETS arrow LED flashes. UP

and DN controls then allow user to scroll through A1 through A20 or F1 through F20, dependant on

band. HD Radio

FM multicast stations can be stored as FM Presets. Once user has selected

desired PRESETS position, next momentary push of SELECT switch stores selected station in that

PRESETS position.

Multicast Tuning. When tuned to an HD Radio

broadcast with at least one FM multicast signal

present, momentarily depressing the MODE – SERVICE switch puts monitor into MULTICAST TUNING

mode. Use the UP and DN controls to scroll through each of the multicast stations available. The

DATA - DISPLAY switch selects PAD data from the tuned multicast broadcast to be displayed on

monitor’s VFD, as described above.

Headphones. Recessed screwdriver control adjusts headphone output level on recessed ¼” TRS

jack. Default set at the factory is +4dBm.

M2.2R Analog SCA and AM Measurements

Overview. The M2.2R adds extended FM analog monitoring capabilities to the M2.0X including peak-

type measurements of the injection level for 19kHz pilot, 38kHz, 57kHz, 67kHz and 92 kHz sub-carriers

using the Carrier Modulation LED display with a 0.2% resolution between 4.4% and 10.4%. A rear

panel MPX Output for external sub-carrier decoding is also included. The M2.2R also adds a relative

indication of the incidental AM noise component of the FM carrier using the top Demodulation Level

LED display. During the AM noise and Sub-Pilot measurements, all other M2.0X functions are

disabled.

AM Noise Level. A relative measurement of the incidental AM noise component of the FM carrier can

be made by first tuning to the FM station of interest and then selecting AMN mode by pressing the

Demodulation Level Select switch until the blue AMN LED illuminates. The top Demodulation Level

LED meter will indicate the relative level of the incidental AM noise component present in the FM

carrier. The 0dB indication is referenced to –50dB.

Pilot and SCA Injection Level. The injection level for 19kHz pilot, 38kHz suppressed stereo

subcarrier, 57kHz SCA, 67kHz SCA and 92kHz SCA of an analog FM signal can be accurately

measured using the Carrier Modulation LED display by first tuning to the FM station of interest and then

selecting the Sub-Pilot mode by pressing the Carrier Modulation Select switch until the blue Sub-Pilot

LED illuminates. The received RF signal level of the analog FM signal must be at least 65dBf for the

Sub-Pilot mode to be active.