Orthometric Heights (MSL) and GNSS Configuration on Survey123 field app

Discussion created by zivco01 on May 14, 2020
Latest reply on Jul 8, 2020 by bstokes-esristaff

I'm using a gnss gps (Trimble Catalyst) with the Survey123 field app and Collector (Android), the Trimble Catalyst is used with the Trimble Mobile Manager app.

the Trimble Mobile Manager ALTITUDE output is displaying two values:


1. Height above ellipsoid (HAE).

2. Height above mean sea level (MSL)


in the collector app the ALTITUDE is receiving the MSL value and in the Survey123 field app the ALTITUDE is receiving the HAE value .

i tried several geopoint properties  codes in the Survey123 form:


pulldata("@geopoint",${location},"altitude ")

and it always getting the HAE value.


after some searching i found that ESRI is updated the collector app to the new TMM MSL value and it's updating it the the altitude field.

Trimble Mobile Manager Adds Orthometric Height Support, Geodetic Functionality | Trimble Geospatial 

Orthometric Heights with Trimble GNSS & Esri Collector (Part 1 of 4)


will Survey123 field app be update to the new settings as well?

if the collector "knows" to take the MSL value  what is the geopoint properties for the Survey123?


 i know that i can update the geoidSeparation in the Survey123 field app but if i will get that value directly from the TMM it is better accuracy.