Operating Voltage 4.75-8.2 VDC
Operating Current: Power Save Mode (COR Operation) 2.5 mA typical
Repeat Operation 17.5 mA typical
Average w/COR Power Save (80-10-10 cycle) <5 mA
Average w/COR Power Save (90-5-5 cycle) <4 mA
Operating Temperature -30 - +60 C
Frequency Response 300-3000 Hz
Input Impedance >45 kΩ
Input Level (TX) 0.05-2.5 VPP
Input Level (RX) 0.05-2.5 VPP
Audio Output Impedance < 1200 Ohm
5B
INSTALLATION OVERVIEW
1. Test the radio for functionality.
2. Program the radio per the Radio Programming Section of this manual.
3. Install the unit into the radio per the Hardware Installation Section of this manual.
4. Program the unit per the Product Programming Section of this manual.
Note: Midian is not responsible for any damage/loss resulting from the use of Midian’s products.
2
GENERAL INFORMATION
Midian’s SVR-1 is a simplex repeater maker that can be installed into a mobile or portable radio. The SVR-1
detects COR or VOX from an incoming transmission and records the incoming audio (up to 3 minutes). When the
COR or VOX is no longer detected the SVR-1 keys the radio and retransmits the recorded audio. The SVR-1
enables users to create low-cost vehicular repeaters or expand radio coverage into poor coverage areas.
It is necessary to program the radio before installing the unit. This is because the Option Board Feature of the
radio must be enabled in order to program the unit using the Motorola RIB box and cable or RIB-less cable and to
hear confirmation beeps from the radio after programming the unit.
1. In the Radio Configuration Window under the Option Board Tab, select Advanced Option Interface as the
Option Board Type. Do not check the Option Board Configuration Download box.
2. When programming the “Conventional Personality”, check the Option Board Feature box for all channels if
using a button to control repeat enable/disable. If doing repeat on a per channel basis, then check Option
Board Feature only for repeat enabled channels. Additionally the unit should be programmed to Power Up in
Store/Retransmit Mode.
4
The following step applies to the accessory connector and may be skipped by most users.
3. An accessory pin may be used to control the repeat enable/disable mode. This is useful in remote control
applications. To enable this feature, one of the radio accessory pins must be assigned to Option Board 1 (Input) via the CPS programmer. The MPS also needs to be configured to use this mode input (see page 17).
It is necessary to program the radio before installing the unit. This is because the Option Board Feature of the
radio must be enabled in order to program the unit using the Motorola RIB box and cable or RIB-less cable and to
hear confirmation beeps from the radio after programming the unit.
1. In the Per Radio Miscellaneous Window under the Global Tab, select “Advanced” as the “Option Board Type”
and set the RX Audio (Accessory Connector) to “Filtered Squelched”. Note: The Accessory Connector is the
rear accessory connector, but this setting also affects the audio going to the options connector.
2. For each personality, under the Miscellaneous tab, the “Option Board” must be enabled. Check the Option
Board box for all channels if using a button to control the repeat mode. If doing repeat on a per channel basis,
then check Option Board Feature only for repeat enabled channels. Additionally the unit should be
programmed to Power Up in Store/Retransmit Mode.
It is necessary to program the radio before installing the unit. This is because the Option Board Feature of the
radio must be enabled in order to program the unit using the Motorola RIB box and cable or RIB-less cable and to
hear confirmation beeps from the radio after programming the unit.
Conventional Programming:
1. In the Radio Configuration Window under the Option Board Tab, select Advanced Option Interface as the
Option Board Type. Do not check the Option Board Configuration Download box.
2. When programming the “Conventional Personality”, check the Option Board Feature box for all channels if
using a button to control the repeat mode. If doing repeat on a per channel basis, then check Option Board
Feature only for repeat enabled channels. Additionally the unit should be programmed to Power Up in
Store/Retransmit Mode.
7
LTR Programming:
1. In the LS Trunking Personality window, check the Option Board Feature box for each personality. Check the
Option Board Feature box for all channels if using a button to control the repeat mode. If doing repeat on a
per channel basis, then check Option Board Feature only for repeat enabled channels. Additionally the unit
should be programmed to Power Up in Store/Retransmit Mode.
The following step applies to the accessory connector and may be skipped by most users.
1. An accessory pin may be used to control the repeat enable/disable. This is useful in remote control
applications. To enable this feature, one of the radio accessory pins must be assigned to Option Board 1 (Input) via the CPS programmer. The MPS also needs to be configured to use this mode input (see page 17).
It is necessary to program the radio before installing the unit. This is because the Option Board Feature of the
radio must be enabled in order to program the unit using the Motorola RIB box and cable or RIB-less cable and to
hear confirmation beeps from the radio after programming the unit.
1. In the Per Radio Parameters Window set the “Option Board Fitted Mode” as “Advanced”.
2. Edit the ‘MPT Personality’. In the “Options” window, check the “Option Board Enable” box. Check Option
Board Enable for all channels if using a button to control the repeat mode. If doing repeat on a per channel
basis, then check Option Board Enable only for repeat enabled channels. Additionally the unit should be
programmed to Power Up in Store/Retransmit Mode.
9
3. If using conventional channels, edit the ‘Conventional Personality Data’. In the “Conventional Personality”
window, check the “Option Board Enable” box. Check Option Board Enable for all channels if using a button
to control the repeat mode. If doing repeat on a per channel basis, then check Option Board Enable only for
repeat enabled channels. Additionally the unit should be programmed to Power Up in Store/Retransmit Mode.
10
HARDWARE INSTALLATION
Be certain to follow standard anti-static procedures when handling any of Midian’s products.
Radio Firmware: For the mobile radios listed, it is necessary to have radio firmware version R05.00.00 or higher.
If the radio has an older firmware version, it is necessary to upgrade to the newest firmware.
Verifying the firmware version can be done several ways. On most radios, this information is on a label on the
bottom of the radio. For display radios, selecting the SoftwareVer# option from the utility menu will report the
version. Consult Motorola if you cannot determine the firmware version.
Disassembling the Radio:
Additional disassembly instructions are also available in Motorola’s Basic Service Manual.
1. Disconnect power.
2. Remove plastic cover from the radio chassis by prying the sides away and lifting up.
3. Remove the 6 retaining bolts from the metal lid using a Torx™ size 20 screwdriver. Carefully begin removing
the lid. If there is already an option board installed such as a voice storage board, disconnect it by gently
lifting the latch holding the 40-pin flex cable in place.
4. Remove the lid completely. Unscrew the three bolts holding the option board frame to the lid if one is present.
Note: It is not recommended to use the radio for transmitting while disassembled, as some model radios require
the lid to be installed for RF power.
Installation:
1. Insert the 40-pin flex cable into the 40-pin flex connector on the SVR, making certain it is seated properly,
then close the latch. The silver foil side of the flex should face the edge of the board.
11
2. The SVR is then mounted into the metal lid of the radio using the option board mounting kit. See pictures
below. The mounting kit is ordered from Midian as PRO Option B or from Motorola as RLN4823B. The
mounting kit includes the 40-pin flex cable, the mounting frame and 3 mounting screws.
Reassembling the Radio:
Additional assembly instructions are also available in Motorola’s Basic Service Manual.
1. Once the unit is installed in the lid, insert the other side of the 40-pin flex cable into the 40-pin flex connector
on the radio’s main board. The shiny side of the flex should face down.
2. Reinstall the metal lid making sure the flex bends toward the back of the radio, otherwise it will be pinched by
the lid. Tighten the screws down in number sequence shown on the lid to 17 in lbs (1.9 NM) torque. Repeat to
verify torque is correct after completing the sequence.
3. Snap on plastic cover.
12
1B
PRODUCT PROGRAMMING
Install the MPS programming software if you have not done so already. The unit is programmed through the radio
using the Motorola RIB box and cable or RIBless cable and Midian’s MPS programming software.
Start the MPS software. From the product selection screen on the MPS software, locate and select the SVR-1MPP1/MPM1 and click OK.
Configure the programming software by selecting File->Preferences and make certain there is a check mark next
to ‘Rib Box Enable’ by clicking on it. Also select the appropriate COM port.
Set the parameters of the software to fit the application. If any clarifications on a feature are required, move the
mouse cursor over the feature name until the question mark appears and right click, an on-line help for that
feature will be shown. The MPS always defaults to “Conventional MDC Portable” as the radio type. On the basic
settings tab it is necessary to select the proper radio type.
After entering the parameters, save the file by going to File - Save As. Enter the file name in the File Name block
and click Save. Saving the file will allow for quick and easy reprogramming of units. Turn power on to the radio
and then the RIB. Click ProgramUnit! in the MPS software. You will hear 1-3 beeps from the radio if programmed
successfully.
To read the parameters from the unit, Click on ReadUnit!.
The radio and RIB should be powered down for 3 seconds after reading or programming.
Unit Information
This information area is updated when a unit is read or programmed. It will also be updated when a data file is
loaded from a
previous unit read and then saved. Below is a summary of the fields:
Product - Shows a more detailed description of the product model within the series.
uP #1 Firmware Version - Indicates the reported Firmware Version of the microcontroller of this product.
uP #1 Loader Version - Indicates the reported Loader Version of the microcontroller of this product.
13
Power Up: Enables a short beep sequence that takes place immediately after power-up.
Error: This beep will be triggered by any input event which is not programmed. For example, if a long press on
the Mode Input is not assigned to a function, it will generate an error beep if a long press is sensed.
Mode: When using a switch to enable/disable the SVR, a medium tone followed by a high tone will sound
indicating repeat mode is enabled. When pressed again a medium tone followed by a low tone will sound
indicating repeat mode is disabled.
Go Ahead: Not currently used.
Wake Up Beep: Enables a short beep to be sent over the air immediately after PTT is pressed. Enabling this
beep is recommended when the 'Wake on VOX' feature is used. This may also be used to get the attention of the
party receiving a call.
Courtesy Beep: If selected, once the unit is done retransmitting the recorded audio it will generate a courtesy
tone to let others know it is done retransmitting.
Voice Compression: If checked the SVR-1 can store up to a 3-minute voice message. If unchecked the SVR-1
can store up to a 2.25 minute voice message, but with a higher level of audio quality.
14
Power Up In Store/Retransmit Mode: If selected the unit will power up in repeat mode. This box must be
selected if doing repeat enable on a per-channel basis.
Key-Up Delay: This sets the amount of time the unit waits after keying the base station radio before it starts to
retransmit the recorded audio.
Trunking Delay Enable: Check this box if using a trunking system. This will cause the unit to hold off
regenerating the recorded audio until it has received a channel acquisition acknowledgement from the base
station radio. If no channel acquisition is received within 6 seconds the SVR-1 will cancel the retransmit cycle.
Common PTT: Check this box if PTT In and PTT Out are connected to the same point.
PTT Cancels Store/Retransmit: If checked and the PTT is pressed during store/retransmit the unit will not
retransmit the incoming transmission.
Number of Retransmits: This sets how many times the unit will retransmit the last recorded audio clip. Set to 0
for continuous transmission.
Retransmit Interval: This sets the time interval between the retransmits set in the Number of Retransmits field.
15
Short Press: If using a button for mode select, it can be programmed for Store and Retransmit On, Off or On/Off
Toggle. This is a press and immediate release.
Long Press: If using a button for mode select, it can be programmed for Store and Retransmit On, Off or On/Off
Toggle. This is a press and hold until beeps are heard, then release.
16
Radio Type: Select from the list the Radio Type that matches your radio. For example if the radio is a CDM-750,
GM-140, GM-328 or PRO-5100 you would select Conventional MDC Mobile or if the radio is a GM-339 or GM660you would select MPT Mobile.
Enable Mode LED: Checking this box will cause the green LED on the radio to blink while the repeat mode is
enabled while the radio is idle. This blinking may be paused when the radio is receiving or transmitting in order to
avoid interfering with normal LED functions of the radio.
Enable LCD Messages: Future Use.
Use Accessory Pin for Mode Input (mobile only): If desired the unit can be enabled/disabled using an input
from the rear accessory connector of the mobile radio.
Use Accessory Pin for Emergency Input (mobile only): Future Use.
Please only adjust the parameters of this screen when advised to by Midian.
17
Beep Volume: Adjust the slider for the desired beep volume. This level is expressed as a percentage of max
voice audio level.
Over-The-Air-Signal Modulation: Adjust the slider for the desired modulation of tones such as courtesy beep or
wake up beeps. This level is expressed as a percentage of max voice audio level.
Playback Level: This controls the audio level when a stored voice message is played back on the radio speaker.
If voice playback is too low or too loud, adjust this level accordingly.
Transmit Level: This controls the audio level when a stored voice message is retransmitted over the air. If the
transmit level is too low or too loud, adjust this level accordingly.
18
HARDWARE ALIGNMENT
This section describes how to determine and set the audio levels. Midian has already determined the best audio
levels for some models of radios. These levels are on the following page in the tables. If you wish to alter the
levels please follow the instructions below.
Audio Levels Overview:
To ensure the best audio quality, the unit must be configured to match the audio levels used by the radio. The
SVR uses programmable gain amplifiers to accomplish this. Determining the gain settings for these amplifiers is
an involved process, so Midian simplified this process by developing an algorithm that requires the technician to
make only four voltage measurements. From these four measurements, all of the many internal settings are
determined.
Still, getting the best audio quality will likely require a bit of trial and error. The SVR only has control of audio
voltage levels, not input and output impedances. These impedances can dramatically influence the levels.
The Four Voltage Measurements:
An oscilloscope and a communications test set/service monitor are required for the measurements. It is
recommended that the measurements be recorded in units of mV peak-to-peak. Each measurement must be
taken with system modulation at either 60% or 100%, but Midian recommends using 60%
These measurements must be taken within 15 seconds of powering on the unit. This is because the unit will enter
power saving mode after that time. Measurements made while the unit is in power saving mode will not be valid.
TX Alignment Set-Up: A method for controlling transmit modulation is required for accurate measurements in the
TX mode. A small speaker held in place near the microphone by a rubber band can serve this purpose in most
cases. Use a sine-wave generator to inject a 1000 Hz tone into the speaker. Adjust the output of the sine wave
generator so that the transmitter produces 60% of rated modulation while PTT is pressed. Note that if the audio
source (such as a speaker) is moved even slightly, the TX modulation may change significantly. Care must be
taken to avoid changing the TX modulation while taking the measurements.
RX Alignment Set-Up: Using a service monitor send a fully quieting signal (-50 dBm) to the receiver with a 1000
Hz tone at 60% modulation, adjust the volume of the receiver to a comfortable listening level and measure the
audio level at the speaker using an AC coupled oscilloscope. Once the volume is adjusted and the measurement
taken do not adjust the volume control during the remainder of the alignment.
1. TX Input: The goal of this procedure is to determine the audio level that the unit will see at the TX audio
pickup point after it is installed. The unit must be installed and powered-on while making this measurement.
Use the TX Alignment Set-Up procedure and measure the audio level at TP1 on the unit.
2. RX Input: The goal of this procedure is to determine the audio level that the unit will see at the RX audio
pickup point after it is installed. The unit must be installed and powered-on while making this measurement.
Use the TX Alignment Set-Up procedure and measure the audio level at TP2 on the unit.
3. In the SVR programming software under audio levels set the TX In to the same level as measured in step 1
and for a preliminary adjustment set the TX Out for the same level. Set the RX In to the same level as
measured in step 2 and for a preliminary adjustment set the RX Out for the same level. Program the unit.
4. RX Output: The goal of this procedure is to determine the audio level that would normally appear at the RX
audio insertion point in an unmodified radio. Using the same RX Alignment Set-Up procedure verify the audio
level at the speaker is still at the same level measured initially in the RX Alignment Set-Up procedure. If not
adjust the RX Out level accordingly.
5. TX Output: The goal of this procedure is to determine the audio level that would normally appear at the TX
audio insertion point in an unmodified radio. Using the same TX Alignment Set-Up procedure verify the
modulation is still at 60%, if not adjust the TX Out level accordingly.
19
Programming the Audio Levels:
Motorla
Radio Model
RX In
TX In
RX Out
TX Out
After determining the audio levels at the audio hookup points, it will be necessary to program the unit to match
these levels. In the programming software, there is a slider control on the Audio Levels Screen for each of the of
four audio hookup points. Locate the column that corresponds to the modulation and units of measurement for
each of the audio hookup points. Adjust the slider bar such that the value appearing in the appropriate column
matches what was measured as closely as possible.
The following table shows Midian’s recommended levels for the SVR at 60% modulation (mVpp) for tested
models of radios:
Mode Selection: Mode selection means a method of turning the simplex repeater on and off. In the SVR-1-
MPM1 series there are two ways of doing this:
Per-Channel Repeat On/Off: To use this feature each channel that is designated as a repeat channel should
have the Option Board Feature box enabled in the radio programming software. Channels that are designated as
non-repeat should NOT have the Option Board feature box enabled. Additionally the MPS software should be set
to Power Up in Store/Retransmit Mode. When using Per-Channel Repeat, a button should NOT be programmed
for Mode Select in the MPS software.
Repeat On/Off Button: To use this feature each channel should have the Option Board Feature box enabled in
the radio programming software. The desired button should be programmed to no function in the radio
programming software. In the MPS software on Button Assignment tab set the desired button to “Store/Retransmit
On or Off”. Pressing and releasing this button will toggle between repeat enable and disable. A medium tone
followed by a high tone indicates the unit is in repeat mode and a medium tone followed by a low tone indicates
the unit is in non-repeat mode.
21
TECHNICAL NOTES
Radio Compatibility: Midian has taken the utmost care to ensure the option board integrates into the radio with
minimal impact to the features of the radio. However, some features may not be available in the radio when an
option board is used. If a feature is not available, please contact Midian to see if the feature can be added.
Radio Firmware: Midian recommends installing the module into the radio with the existing firmware of the radio
provided the firmware is at least R05.00.00. If the radio has a firmware version older than R05.00.00, it must be
upgraded. If there are any issues with the firmware then the firmware should be upgraded to the latest. However,
it should be noted that occasionally firmware updates may cause a conflict with proper option board/radio
communications. This may appear that the SVR is not working properly, but it is a conflict in the serial
communication between the option board and radio. Please note that firmware versions between the EMEA
region and the Asia and America regions might be different.
Accessory Pin Features: Upon power-up, the radio does not always report the state of the accessory pins to
the option board. It may be necessary to toggle the state of these inputs once after power-up to ensure correct
operation.
Option Board Feature: Enabling the option board feature tells the radio to report events such as button press,
PTT press, carrier detect, etc. to the option board. This feature enables communication between the option board
and the radio.
When controlling the SVR with a radio button, it is absolutely required to enable this feature on all channels. For
repeat enable/disable on a per channel basis only enable the option board on repeat channels and the power up
mode of the unit should be Power Up In Store/Retransmit Mode. On display models, the following icon appears
on the LCD when option board mode is on: