Teledyne GFC-7001E - Trace CO Analyzer - Manual (Page 177)

Remote Operation Model GFC7001E Carbon Dioxide Analyzer
Teledyne Analytical Instruments 177
8.6.4. SELECTING A HESSEN PROTOCOL TYPE
Currently there are two versions of Hessen Protocol in use. The original implementation, referred to as TYPE 1,
and a more recently released version, TYPE 2 that has more flexibility when operating with instruments that can
measure more than one type of gas.
For more specific information about the difference between TYPE 1 and TYPE 2 download the Manual
Addendum for Hessen Protocol
from the Teledyne web site: http://www.teledyne-api.com/manuals/.
To select a Hessen Protocol Type press:
NOTE
While Hessen Protocol Mode can be activated independently for COM1 and COM2 in the
COMMUNICATIONS MENU, the TYPE selection affects both Ports.