2
3
Interfaces & Indicators
The interfaces and indicators on UM220-IV N EVK is shown below. For the detailed
description, see Table 3-1.
Figure 3-1 Interfaces & Indicators on UM220-IV N EVK
Table 3-1 Interfaces & Indicators on UM220-IV N EVK
Interface/
Indicator
Type
Description
S1
Reset
Reset the module by inserting and removing
the jumper cap
S2
Antenna feed
Control the antenna feed on and off by the
jumper cap
L1
Power/1PPS indicator
The indicator lights up when powered on,
and flashes when the 3D positioning is
effective.
ANT
RF signal input connector
Antenna signal input
FWD
Direction signal connector
Reserved for odometer directional signal
input. UM220-IV N EVK does not support
this interface.
L2
Speed pulse signal indicator
Reserved. The indicator flashes when
receiving the speed pulse signal. UM220-IV
N EVK does not support this interface.
SPD
Speed pulse signal
connector
Reserved for odometer speed pulse signal
input. UM220-IV N EVK does not support
this interface.
USB
Micro-B USB connector
Power supply (+5V) and data
communication
SD-card
SD card slot
Insert an SD card
UART
Communication DB9
connector
Backup serial communication interface with
RS232
