1. Payload and Mobility
Measure 15 samples in the dark and 5 samples in light. The Viking Lander did not move, but it used an SSRA with a boom, collector head, and shroud unit, capable of collecting a variety of material elements.
Each sampling site separated by 500 m. The Viking Lander did not have this capability.
Determine composition, geotechnical properties, and volatile content of regolith. The Viking Lander used an X-ray Fluorescent Spectrometer (XRFS) to perform a chemical analysis.
Enhanced geological characterization (multispectral imager & remote sensing instrument). The XRFS plus a remote sensing instrument may be used for this function.

2. Observation Viking Lander camera system LETS camera system
Looked at surface and was able to measure optical density of the atmosphere
Geologically characterize the surface
Look for macroscopic evidence of life
LETS camera system
Observe electrostatic dust on the horizon
Study change in lighting conditions and the effects of surrounding environment
Aid in Earth observation and control of data collection

3. Communication and Data Transmission
Transmission options
Direct transmission used by Viking
Relay from Viking Orbiter to Earth
DAPU to convert data
UHF linked used to transmit data at speeds of 4000 and 16000bps
Transmission Criteria for LETS
=> 1 Earth day to transmit data
Limit of no slower than 4000bps
Same instrumentation to substitute from Viking
Transmission Path Options
Direct transmission on the Moon to Earth in sunlight
Storage of data until sunlight is reached
Lunar orbiter to relay data to earth