| ZG20 |
| Satellite tracked |
Channels |
440 |
| GPS |
L1 C/A, L1C, L2C, L2P, L5 |
| GLONASS |
L1C/A, L2C, L2P, L3, L5 |
| BDS |
B1, B2,. B3 |
| GALILEO |
E1, E5, AltBOC. E5a, E5b, E6 |
| QZSS |
L1C/A. L1C, L2C, L5, L6 |
| SBAS |
L1, L5 |
| IRNSS |
L5 |
| Position rate |
5 Hz |
| Initialization time |
8s |
| DGPS |
25cm |
| Initialization reliability |
99.90% |
| high precision static surveying |
Horizontal |
2,5mm + 0.5ppm |
| Vertical |
5mm + 0.5ppm |
| RTK measurment |
Horizontal |
10mm + 1ppm |
| Vertical |
20mm + 1ppm |
| Communication |
| blue tooth |
Class II |
| UHF radio |
Built-in receiver and transmision integrated radio, can set 1w/0.5w |
| external radio |
high definition OLED display |
| real time voltage moniting |
| port Bit rate intelligent recognition |
| mutilchannel design, support multi sets working simultaneously |
| network communication |
4G network module: support Unicom, Mobile, Telecom 4G satallite differential |
| GPS antenna |
| antenna |
internal integration |
| type |
microstrip antenna |
| phase center |
zero phase center |
| Multipath suppression |
built-in Multipath suppression |
| Physical specification |
| Dimensions |
height: 95mm, diameter: 192mm |
| Weight |
1.26kg, includes battery and internal battery |
| working temperature |
-40 ℃ ~ + 65 ℃ |
| Storage temperature |
-40 ℃ ~ + 80 ℃ |
| Waterproof/ dustproof |
IP68 |
| humidity |
100% anti-condensation |
| Shock resistance |
Designed to endure to a 2m pole drop on concrete floor with no damage |
| battery |
7.4v, 3.1Ah, can be charged |
| working time |
8h |
| external power |
9-15v |
| button |
power and function buttons |
| display |
LED*7 |
| port |
TNC*1, LEMO*1 |
| Memory and data |
| internal memory |
8G |
| differential output |
CMR, CMR+, RTCM v23, RTCM v3.0, RTCM v3.2, Geomax X |
| ASCII output |
NMEA0183 |
| Data collector |
| Size |
215*82*26mm |
| Weight |
470g |
| CPU |
Qualcomm Snapdragon 8 core |
| RAM |
2GB LPDDR3 |
| Memory |
16GB |
| External memory |
Max. support 256GB |
| Screen |
4.3 inch,69*111mm |
| Battery |
lithium battery 6000mAh, 3.8V, 22.8Wh, input voltage DC5~9V, 2A; working time more than 10 hours, Type-C adaptor |
| Keyboard |
Full keyboard with 54 buttons |
| Operation environment |
| Protection level |
IP67 |
| Temperature |
Operation temperature:-30℃–+60℃ |
| Storage temperature:-40℃–+80℃ |
| Humidity |
5%-95% Non-condesing |
| Anti-dropping |
Can withstand 1.5m drop with pole (concrete hard ground) |
| Data communication |
| WiFi |
2.4G/5G, 802.11 a/b /g/n/ac |
| blue tooth |
BT2.1+EDR/3.0/4.1LE/4.2BLE |
| Network |
LTE FDD: B1/B3/B5/B8 |
| LTE TDD: B34/B38/B39/B40/B41 |
| WCDMA: B1/B8, ECDO/CDMA: BCD |
| GSM/EDGE: 900/1800MHz |
| GSM: 900/1800MHz |
| Other |
storage card slot, SIM card slot |
| Operation system |
Android 9 |
