JAVAD UHFSSRx OEM Radios User Manual
- June 6, 2024
- JAVAD
Table of Contents
JAVAD UHFSSRx OEM Radios
UHFSSRx
For operation manuals and other technical documents, please visit our website
and download the latest firmware.
Here are the link to the UHFSSRx firmware, documentation, and utilities:
http://javad.com/jgnss/products/radios/oem-radios.html
Support Inquires
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Dimensions
16-Lead Header Connector Pinout
PIN #| Signal Designator| Signal name| Description|
I/O| Comments
---|---|---|---|---|---
1| GND| GND| –| Ground| Signal and Chassis Ground
2| DSP UART 1| TXD| TTL Input| Transmitted Data| Serial Data Input
3| DSP UART 2| RXD| TTL Output| Received Data| Output for received serial data
4
| ****
DPORT5
| ****
DTR or DP/ MP
| ****
TTL Input
| ****
Data Terminal Ready
| Control line can be used as a backup method for entering Command mode: (0V) – Maintenance Mode; (3.3V) – Data Mode
An internal 100K pull-up enables Data Mode if this signal is left unconnected. Mainte-
nance Mode is also accessible by transmitting an escape sequence.
5
| ****
DPORT1
| ****
CTS
| ****
TTL Output
| ****
Clear to Send
| Used to control transmit flow from the user to the radio: (0V) – Transmit buffer not full, continue transmitting (3.3V) – Transmit buffer full, stop transmitting
6
| ****
TTLI1
| ****
SLEEP
| ****
TTL Input
| ****
Sleeps/wakes radio Receive only
| In sleep mode, all radio functions are disabled consuming less than 50µA. An internal 10K pull-down wakes up the radio if this signal is left unconnected. At wake up, any user programmed configuration settings are refreshed from flash memory, clearing any temporary settings that may have been set:
(3.3V) – Sleep Radio; (0V) – Wake Radio
As an option could be used as TTL Input Line 1.
7
| ****
DPORT3
| ****
MDM_GRN
| ****
TTL Output
| ****
Data Carrier Detect
| Used by remotes to indicate that the remote has successfully acquired the signal from base station:
(0V) – Carrier detected (synchronized)
(3.3V) – No carrier detected (not synchronized)
8
| ****
DPORT4
| ****
RTS
| ****
TTL Input
| ****
Request to Send
| Gates the flow of receive data from the radio to the user on or off. An internal 10K pull- down enables data receive if this signal is left unconnected. In normal operation, this signal should be asserted:
(0V) – Receive data (RxD) enabled
(3.3V) – Receive data (RxD) disabled
9
| ****
DPORT2
| ****
DSR
| ****
TTL Output
| ****
Data Set Ready
| Used to control transmit flow from the user to the radio: (0V) – Receive buffer has data to transfer;
(3.3V) – Receive buffer is empty
10| RES CONT| RESCONT| TTL Input| Reset the radio| Reset the radio by
shortening this pin to the ground.
11| TTLO1| TTLOUT1| TTL Output| TTL Output Line 1| Reserve line
12| TTLO2| TTLOUT2| TTL Output| TTL Output Line 2| Reserve line
13| GND| GND| –| Ground| Signal and Chassis Ground
14| TTLI2| TTLIN| TTL Input| TTL Input line| An internal 100K pull-up resistor
is applied.
15| VCC36| PWR| External| Power Supply| Regulated positive 3.6V DC from ext.
Power Supply.
16| VCC36| PWR| External| Power Supply| Regulated positive 3.6V DC from ext.
Power Supply.
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