Raveon Tech Series User manual

1Raveon Technologies Corp.
RV- M 21 a n d R V - M 2 2
Tech Series Products
Version G1
April 2020
A Myriad of IO Options
Raveon Technologies Corporation
2320 Cousteau Court
Vista, CA 92081
www.raveon.com

2Raveon Technologies Corp.
Table of Contents
1. About This Manual ........................................................................................ 3
2. Tech Series Overview................................................................................... 3
2.1. M21 and M22................................................................................................................................. 3
2.2. I/O Options .................................................................................................................................... 4
2.3. Tech Series Flexibility.................................................................................................................... 4
2.4. Features ........................................................................................................................................ 5
2.5. Power ............................................................................................................................................ 6
2.6. Power Cable.................................................................................................................................. 6
2.7. LED Indicators............................................................................................................................... 7
PWR Power LED.................................................................................................................................. 7
STAT LED ............................................................................................................................................. 7
LINK LED............................................................................................................................................... 7
3. Tech Series I/O Interface Information ........................................................... 7
3.1. RS-232 [ S ] 5T835..................................................................................................................... 7
3.2. Analog [ A ] 5T838........................................................................................................................ 8
3.3. USB [ U ] 5T837 ......................................................................................................................... 11
3.4. RS-485 [ T ] 5T836-1.................................................................................................................. 11
Configuring.......................................................................................................................................... 12
Simplex or Full Duplex......................................................................................................................... 12
3.5. RS-422 [ F ] 5T836-2.................................................................................................................. 13
Configuring for RS-422 Dual-State (Duplex Communications)............................................................ 13
Configuring RS-422 Tri-State (Simplex Communication)..................................................................... 14
3.6. GPIO [ G ]................................................................................................................................... 15
SCADA and Telemetry Use................................................................................................................. 16
Configuring.......................................................................................................................................... 16
Summary of Input and Output functions. ............................................................................................. 16
3.7. FIO [ D ] Flexible IO................................................................................................................ 17
SCADA and Telemetry Use................................................................................................................. 18
Summary of Input and Output functions. ............................................................................................. 18
4. GPIO and FIO Commands and Configuration............................................. 18
Application Note AN234 has more information about how to use the Tech Series Radios for SCADA Applications.
Here is a summary of the information.................................................................................................. 18
4.1. SCADA and Telemetry Commands............................................................................................. 18
5. RV-M22 and RV-M21 series products Warranty......................................... 20

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1. About This Manual
This manual covers interface options for Raveon’s Tech Series products. Various radio
models may be incorporated into the Tech Series products, so refer to the particular radio
module Technical Manual for specific information about how to configure and use the radio
features.
This manual covers Tech Series I/O features. The manuals for the radios used in Tech
Series products are:
RV-M8 VHF/UHF 5W radio modem module
RV-M6 VHF/UHF 2W radio modem module
RV-M50 915MHz ISM Daisy radio, License Free
RV-Z50 3G cellular radio modem
RV-Z55 LTE cellular radio modem
There are two different Tech Series Enclosures:
RV-M21 For M8 radio modules, up to 5 watts TX power.
RV-M22 For M6, M50m, Z50 radio models. Low power, miniature enclosure.
2. Tech Series Overview
2.1. M21 and M22
M22 Enclosure M21 Enclosure
The M21 is larger to utilize the 5 watt M8 radio modems. Both enclosures have GPS
options and can utilize the myriad of IO options.

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2.2. I/O Options
The front interface of the M21 is fully field-reconfigurable. The following interface boards
may be attached or changed at any time:
RS-232 [ S ] 5T835 RS232 serial port, DB9.
USB [ U ] 5T837 USB for computer communication.
RS-485 [ T ] 5T836-1 RS-485 2-wire interface.
RS-422 [ F ] 5T836-2 RS-422 4-wire interface.
GPIO [ G ] contact sales General Purpose IO.
Analog [ A ] 5T838 Analog radio interface.
FIO [ D ] 5T832-1 Flexible IO. Digital INs and OUTs
2.3. Tech Series Flexibility
The Tech Series radios from Raveon is the most flexible radio platform in the industry.
A myriad of I/O options, and many RF band options, GPS options, wide/narrow
channels, Arduino option, and wide DC input voltage range.
I/O Connector Type
Connector Code
S
U
F,G, T
A,D

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The Tech Series RV-M21-xxxx radio modems come pre-configured from Raveon with
the bandwidth, frequency band, GPS, and I/O option. The I/O interface may be
changed in the field.
2.4. Features
The Tech Series radio modems from Raveon have many unique features. Compared
to most radio modems, and Raveon’s industry-standard M7 radio modem, the Tech
Series products feature:
1) Water-proof DC power connection
2) Locking DC connector. A screw-on M8 type connector that will not come off
without unscrewing it.
3) Numerous I/O options. I/O options such as RS232/485/422 and USB are all
available, and field upgradable. The radio within the Tech Series enclosure
detects the I/O it is using, and adjusts its operation accordingly.
4) Low power consumption. The power supplies, receiver, GPS, and transmitter
all have lower power consumption than legacy products.
5) Secure. Built in AES encryption options allow users to add additional security to
their communication systems.
6) App Processor Option. You can order a TechSeries product with a built-in
Arduino application processor to run your own application on.

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7) Broad RF Options. Radio modems used within the TechSeries enclosure are
available from Raveon in VHF, 220MHz, UHF, 800MHz, 900MHz, and 3G
cellular bands.
8) Wide DC input. Most Tech Series modems will work off of any DC input
voltage from 10V to 30V DC, twice the range of most radios.
9) Multiple Protocols. Tech series radios support many different protocols, such
as 4800, 9600, 19200 baud data modems, Bell 202 legacy analog AFSK
modulation, POCSAG paging, and audio modulation. 3G cellular and LoRa
WAN are also available.
2.5. Power
The TechSeries products from Raveon utilize a 3-pin power connector. Coincidentally,
the industry name for this connector is “M8”. The three pins are:
1. VIN. DC input voltage. Refer to the specific model number data sheet for input
voltage range.
2. GND. Chassis ground and sometimes cable shield.
3. GND. Chassis and signal ground.
4. Enable. Input to enable/disable the product. Connect to ground to turn off the
radio. It has an internal pull-up resistor on it. It must be > 2V for the product to start
working.
2.6. Power Cable
The cable that connects to the M21 and all Tech Series products is typically wires as
shown here. This 2 meter cable is Raveon part number 4C850-1.
Pin 1 (VIN) is a brown wire. Connect to + DC input voltage.
Pin 3 (Ground) is a blue wire. Connect to Ground or negative input voltage.

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Pin 4 (Enable) is a black wire. Ground to disable product. Connect to Pin 1 or a
voltage > 2V to enable product, For enable voltages higher than 5V, put a 1K ohm
resistor in series with it.
2.7. LED Indicators
The TechSeries have 3 LEDs on their front panel:
PWR Power LED
The power LED blinks green every two seconds. To conserve energy, the blink is a
very short amount of time. If you look carefully at the PWR led, you will see the
periodic green flicker of light when the product is powered on.
STAT LED
The status LED indicates the status of the transmitter, receiver, and GPS.
Green: The receiver is receiving data over the air, or the channel is busy.
Red: The transmitter is transmitting data.
Orange: The GPS receiver in the product has not yet locked to the GPS satellites.
LINK LED
The LINK led is used on DART systems where the radio modem connects to a secure
network, and the LINK LED indicates the status. If the Dart system is not used, the link
LED will remain off.
Connected: The device is authenticated and can communicate on the network.
Red: The device is denied access to the network.
Off: The system does not use the LINK LED, or the user disabled it.
3. Tech Series I/O Interface Information
Products that are compatible with the Tech Series enclosure usually have an I/O mode
command to configure them for auto-detect of Tech Series I/O interfaces. ATIO is the
command. ATIO 8 sets the product to search the Tech Series front panel for
information about which panel is plugged into it.
3.1. RS-232 [ S ] 5T835
The RS-232 9-pin serial I/O connector is a female 9-pin D-subminiature connector
having the following pins configuration. It is pinned out so that it may be plugged
directly into a computer or PC’s 9-pin COM port.

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Front-view of DB-9 connector on modem (female)
Pin
Name
Dir
Function
Level / Specification
1
CD
out
Carrier
detect
If enabled, indicates presence of carrier. Logical 0 (+ voltage on RS-
232) means carrier is present. Logical 1 (- voltage) means no carrier
detected. If disabled, it is asserted (0) whenever the modem is
operational, and not in the configuration mode. It will be a 1 when the
modem is in the configuration mode.
2
RxD
out
Receive
data
Data out of the modem. It is the data received over the air.
3
TxD
in
Transmit
data
Data into the modem.
Also used as digital input IN2 for exception reporting. GND or floating
for a 0, >3V for digital 1. If enabled for digital inputs, the serial data
entering this pin is ignored (except in the command mode). Use the
TRIGBITS command to set which bits are used as inputs.
4
DTR
in
Data
terminal
read
Normally ignored by the RV-M7 modem. May control the power-state
of the modem in low-power mode if this feature is enabled.
Also used as digital input IN0 for exception reporting. GND or floating
for a 0, >3V for digital 1. Use the TRIGBITS command to set which
bits are used as inputs.
5
GND
Ground
connection
Signal and power ground
6
DSR
out
Data Set
Ready
Normally is set to 0 when modem is powered on and running. Modem
sets to a 1 when in low-power mode.
7
RTS
in
Request to
send
or
IN1
Used to stop/start the flow of data coming out of the modem TxD pin.
0 = OK to send, 1 = don’t send. Leave disconnected if not used.
Also used as digital input IN1 for exception reporting. GND or floating
for a 0, >3V for digital 1. Use the TRIGBITS command to set which
bits are used as inputs.
8
CTS
out
Clear to
send
Used to stop the flow of data going into the RxD pin from the device
connected to the RV-M7. 0 = OK to send, 1 = don’t send. If the RV-
M7 cannot accept more data, it will negate this signal (level=1).
9
Power
In/out
DC power
User may supply the DC power to the modem on this pin.
Note: RS-232 signals use positive and negative voltages to represent digital 1s and 0s. A positive voltage is a 0,
and a negative voltage is a digital 1.
This pin-out allows it to be directly plugged into a computer’s 9-pin serial port using a
conventional 9-pin RS-232 serial cable. To connect it to a modem, or peripheral that
has a serial port, you will need a “null-modem” cable.
3.2. Analog [ A ] 5T838
The DB15 connector on the front panel has the following pin functions.
Pin#
Function
Description
1
MIC
Analog Input
2
Audio Out
Analog Output
3
RSSI
Radio Signal Strength Out
4
IOC
General IO –C
5
DTR
Digital DTR out
6
VIN
DC Voltage Input
7
V3
3./3V Output
8
RXD
RX data out, RS232 level

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9
TXD
TX data in, RS232 level
10
CTS
CTS, 3V digital level
11
NC
No connect
12
PTT
Transmitter Enable Line. Active low. Input impedance is 10K.
TX Mode: Input < 2.9V RX Mode: > 3.0V or open circuit
13
NC
No connect
14
DCD
Data/Carrier Detect output. 0-0.1V no carrier, 2.2K pull-up resistor
to VIN when carrier is detected. The 2200ohm pull-up resistor is
driven by a MOSFET pulling it to ground when no carrier is present.
With a 12V DC input, this output can go to 12V.
15
GND
Ground, chassis and power gnd.
Pin 12 is the Push To Talk (PTT) input. It has a pull-up resistor of about 10K on it.
When PTT is low, the transmitter in the M8T will turn on, and output the audio signal on
pin 1.
When PTT is high, the M8T is in the receive mode, and the receive audio will be output
on pin 2.
On Tech Series products utilizing M8 radio modules, the PTT can be set to active high
via the ATPTT command.
There are a few commands designed specifically for use in configuring the operation of
the M8S in audio pass-through mode.
AFDC
Audio input DC offset –The DC bias level on the audio input in millivolt.
Adjust this setting so the audio transmissions are on the center of the
channel. Set to 0 to have the M8S auto-detect the average.
Range: -2000
- 2000
mV
0
AFLVL
Audio input level gain –internal gain of the audio input signal, in % .
Adjust this setting for the audio input deviation level.
Range: 0-
2000%
mV
100

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AFLIM
Audio deviation limit –Sets the peak audio deviation limit for TX audio
in the audio pass-through mode. In % of data deviation 100% limits audio
to same as data. .
Range: 0-
300%
100
TXTOT
Transmit Time-Out-Timer –Sets the maximum number of seconds that
the M8S will stay transmitting when the PTT input is asserted.
Range: 0-500
seconds
10
ATPTT
Push To Talk Polarity –Sets the PTT polarity. Default is active low (0)
and set to 1 for active high.
Range: 0-1
0
ATR2
Audio Frequency Response –In the audio mode use the ATR2 OTA
baud setting to set the audio frequency response. See table below
Range: 0-6
3
Receive Frequency Response:
Transmit Sampling Rate
Sampling Rate
ATR2 = 0
8kHz
ATR2 = 1
12kHz
ATR2 = 2
24kHz
ATR2 = 3
48kHz
ATR2 = 4
80kHz
ATR2 = 5
96kHz
ATR2 = 6
96khz