Unex EVK-351, Quick Start Manual

Page: 10 / 27

Doc. No: Unex-QSG-21-001
10/27
A printed version of this document is an uncontrolled copy
© 2021 Unex Technology Corporation – Company Confidential
Parameters Conditions Min. Typ. Max. Unit
Output current - 500 900 mA
VIL (Input low level voltage)
EXT_1PPS
RESET
TAMPER
GPIO1/GPIO2
-0.3 - 0.8 V
RS232
*1
0.8 1.5 - V
VIH (Input high level voltage)
EXT_1PPS
RESET
TAMPER
GPIO1/GPIO2
2.0 - 3.6 V
RS232
*1
- 1.8 2.4 V
RPU (Equivalent pull-up)
EXT_1PPS 32 50 60 kΩ
RESET 1.8 2.1 2.3 kΩ
TAMPER
*2
0.9 1.0 1.1 kΩ
RPD (Equivalent pull-down)
TAMPER
*3
32 50 60 kΩ
VOL (Output low level voltage)
GPIO1/GPIO2
*4
- - 0.7 V
RS232
*5
-5 -5.4 - V
VOH (Output high level voltage)
GPIO1/GPIO2
*4
2.5 - - V
RS232
*5
5 5.4 - V
IOL (low level output current)
GPIO1/GPIO2
- 10 18 mA
IOH (high level output current)
GPIO1/GPIO2
- - -10 mA
EXT_1PPS (J8.12) tolerance
Accuracy/Bias
-100 - 100 ns
Precision/Jitter
-30 - 30 ns
Pulse width
15 - - ns
V2X antenna gain
5850-5925MHz
- - 5 dBi
V2X sensitivity
PER
≤ 10% -92 - - dBm
PER
≤ 10%,
-40 - +85 °C
-82 - - dBm
V2X maximum Input Level
PER
≤ 10% - - -30 dBm
V2X adjacent channel rejection
-
13 - - dB
V2X non-adjacent channel rejection
-
29 - - dB
V2X output power
Spectrum mask
Class C
- - 20 dBm
GNSS antenna gain
Antenna Gain
- - -2 dBic
LNA Gain
*4
24 27 30 dB
GNSS sensitivity
Tracking
-162 - -125 dBm
GNSS LNA bias
I
LNA
≤ 20mA 3.0 - 3.3 V
Note:
*1: TX (J8.4) / EXT_GNSS_RX (J8.13)
*2: TRIGGER_SW (SW3.2) = ON
*3: TRIGGER_SW (SW3.2) = OFF
*4: IOL = 10 mA, IOH = -10mA
*5: RX (J8.3) / EXT_GNSS_TX (J8.14)