Parameter Minimum Typical Maximum
Rx Threshold High 1.5 V 2.0 V
RS422
Tx Differential Output 1.5 V
Tx Short Circuit Current ±250 mA
Rx Differential Threshold -0.2 V -0.05 V
1PPS when set to 5 V
Output Voltage Low 0 V 0.3 V
Output Voltage High 4.5 V 5 V
Output Current 50 mA
1PPS when set to 3.3 V
Output Voltage Low 0 V 0.1 V
Output Voltage High 3 V 3.3 V
Output Current 50 mA
Table 14: Electrical Specifications
5.5 Certification
The GNSS Compass is designed to meet IMO wheelmark for MED/4.7 Speed and Distance Measuring
Equipment (SDME) and MED/4.41 Transmitting Heading Device (THD, GNSS method) based on the Directive
2014/90/EU.
The Serial model GC2-SER is pending certification to the following standards.
IMO Standards ISO/IEC Standards
IMO Res.MSC 116(73) ISO 22090-3:2014
IMO Res.MSC 191(79) IEC 60945 (2002) incl. IEC 60945 Corr. 1 (2008)
IMO Res.A.694(17) IEC 61162-1 ed4.0 (2010-11)
IEC 61162-2 ed1.0 (1998-09)
IEC 62288 Ed. 2.0 (2014-07)
Table 15: Standards for GC2-SER
The Ethernet model GC2-POE is pending certification to the following standards.
IMO Standards ISO/IEC Standards
IMO Res.MSC 116(73) ISO 22090-3:2014
IMO Res.MSC 191(79) IEC 60945 (2002) incl. IEC 60945 Corr. 1 (2008)
IMO Res.A.694(17) IEC 61162-480 ed4.0 (2010-11)
IEC 62288 Ed. 2.0 (2014-07)
Table 16: Standards for GC2-POE
v2.0 Page 18 04 Nov 2021
GNSS Compass Reference Manual • Specifications