The Rohde and Schwarz SMCVB-K161 is the ATSC/ATSC-MH option for the SMCV100B and adds functionality to generate signals in accordance with the ATSC / ATSC-MH digital standard. Please note, this requires the purchase of option SMCVB-K519.

ATSC-M/H was adopted as the ATSC A/153 candidate standard on December 1, 2008 under the logo "ATSC mobile DTV".

The ATSC-M/H standard adds mobile reception capability to the conventional ATSC/ 8VSB standard. Like ATSC-A/53, it is based on the VSB modulation method. The higher immunity to interference is achieved by more efficient error protection mechanisms in the baseband and by an expanded training sequence. In addition, it is now considerably easier to set up an SFN due to the cyclic resetting of the trellis encoder. The newly introduced slot structure facilitates the development of energy-saving receivers.

ATSC-M/H uses IP-based MPEG AVC (H.264) video and HE AAC v2 audio (ISO/IEC 14496-3) for source coding.

Since the expanded error protection was inserted before the multiplexer in the preprocessor, at least one program can be transmitted simultaneously in the conventional 8VSB.

The postprocessor must then distinguish between standard and M/H data and handle these two data types separately.

In the R&S SMCV100B, only the postprocessor is implemented, which means that to vary M/H-specific parameters, different transport streams are needed.