Remote Station Engineering - Trimble NetR9 Power Draw Tests
TRIMBLE NetR9 POWER DRAW TESTS
UNAVCO performed a short benchtop test series to determine the difference in power draw by a Trimble NetR9 (Firmware 4.61) receiver when connected to two common geodetic GPS antennas, as well as during various modes of receiver operation.
All tests were performed at room temperature. A variable DC power supply was used to deliver a 12.0 volt input to the NetRS, with current monitored using a Fluke 73III multimeter. The receiver was allowed to dwell for a few minutes after each configuration change, to ensure satellite tracking had stabilized and data logging had commenced. No radomes were used with any antenna.
Results from the test series are presented in the table below. All numerical values are average power consumption in Watts.
| NetR9 condition |
Using Trimble GNSS Choke Ring Model 59800-00 |
Using Trimble Zephyr Geodetic 2 Model 57971-00 |
| NetR9 Only* | 2.16 | 2.16 |
| Connect Antenna | 2.52 | 2.64 |
| Tracking GPS | 3.12 | 2.88 |
| Tracking GPS + GLONASS | 3.24 | 3.00 |
| Tracking GPS + GLONASS + GALILEO | 3.60 | 3.60 |
| Tracking GPS + GLONASS + GALILEO + COMPASS | 4.20 | 4.20 |
| Tracking GPS + GLONASS + GALILEO + COMPASS + QZSS** | 4.20 | 4.20 |
| Tracking GPS + GLONASS + GALILEO + COMPASS + QZSS** + SBAS | 4.20 | 4.32 |
| Tracking ALL Constellations as above, add USB*** | 4.68 | 4.80 |
| Tracking ALL Constellations, with USB***, Front Panel ON | 5.76 | 5.88 |
| Tracking ALL Constellations, with USB***, Front Panel ON, Connect Ethernet | 5.88 | 6.00 |
* NetR9 Only is receiver with no antenna, all tracking disabled, no USB, no ethernet, front panel display off.
** No QZSS satellites visible during this test.
*** USB drive was APRO Hammer-D 4GB model.
Power draw tests on a variety of other GPS and communications equipment have also been performed by UNAVCO. Results are located here.
Last modified: 2019-12-24 02:12:28 America/Denver