In case the Smart Tachograph DTCO 4.0 is operated with other external GNSS antennas or GNSS splitters, which are not listed above, please ensure that these GNSS antennas or GNSS splitters connected to the tachograph fulfill the following system requirements:
| Parameter | min | typ | max | Unit | Remarks |
|---|---|---|---|---|---|
| Phantom supply, short circuit current | 55 | mA | |||
| Max. upper level for short circuit detection | 39.5 | 42.3 | 45 | mA | |
| Min. lower level for open circuit detection | 1 | 4 | 7 | mA | |
| Phantom voltage supply v.1 | 0 | V | At I > 39.5 mA | ||
| Phantom voltage supply v.2 | 3.0 | V | At I = 39.5 mA | ||
| Phantom voltage supply v.3 | 4.2 | V | At I = 20 mA | ||
| Phantom voltage supply v.4 | 5.2 | V | At I = 0 mA | ||
| Mandatory frequency range | 1572.42 | 1578.42 | MHz | GPS L1, Galileo E1B (OSNMA) | |
| Recommended frequency Range | 1568.42 | 1582.42 | MHz | Galileo E1B | |
| Optional frequency Range | 1598.00 | 1605.40 | MHz | GLONASS | |
| Impedance | 50 | Ohm | |||
| Antenna Voltage Standing Wave Ratio | 1.2.1 | Z0 = 50 Ohm | |||
| Antenna path amplification | 16.00 | 25.00 | dB | ||
| Noise figure | 2.50 | dB | |||
| Required isolation to other HF applications v.1 | 10 | dB | |||
| Required isolation to other HF applications v.2 | 20 | dB | |||
| Required isolation to other HF applications v.3 | 20 | dB |
In any case, an authorized tachograph workshop needs to approve the proper funcionality of the GNSS antenna and if applicable, also the GNSS splitter according to the requirements of Annex IC (Reg. (EU)799/2016).
The following DSRC antennas are compatible to DTCO 4.0 Smart Tachograph system.
|
AnC-number for ordering |
Housing variant |
Connector |
Adhesive tape |
|
A2C1943380021 |
Standard |
L-coded Carmine Red |
with |
|
A3C0178410021 |
Flat |
L-coded Carmine Red |
without |
For more information and customer specific antenna variants, please contact your VDO partner.
http://vdo-partner.com/Vdo/index
In any case, an authorized tachograph workshop needs to approve the proper functionality of the DSRC antenna according to the requirements of Annex IC (Reg. (EU)799/2016).