Appreciation
Thank you for purchasing Meriva® MMD201mobile surveillance devices.
This manual aims at providing reference for Meriva® MMD201 installation and use. Here
you can find all features and advantages of this product series, as well as detailed
specifications and installation guide.
Before installation, please read the following cautions and key operating instructions.
Notice
This manual applies to Meriva® MMD201 SD card Mobile DVR.
It may contain minor technical inaccuracies or typographical errors, which will be updated
irregularly without further notice. The new content will be updated in the new versions of this
manual.
If there is any description inconsistent, please refer to the actual products and programs.
Guarantee & Warnings
1) Electrical Apparatus Safety
All installation and operation should comply with local electrical safety norms.
2) Transportation
In the process of transportation, storage and installation, please avoid heavy stress, violent
vibration, impact and water splashing.
3) Installation
Install the equipment in accordance with the requirements, handle carefully. Do not heavily
press the equipment before the MDVR installation is finished.
4) Requirements on Engineers & Technicians
All the work of checking and maintenance should be done by qualified engineers. We do
not undertake any problems caused by unauthorized modifications.
5) Requirements on Environment
The equipment should be installed and stored in a cool and dry place, away from direct
sunlight, flammable or explosive substances, etc. Keep gaps not less than 3cm around the
device to facilitate ventilation for cooling.
6) Accessories
Make sure to use accessories from the manufacturer suggested in the attachment.
Insulate circuit ground and metal shell for all the peripherals.
Before installation, please open the package and ensure that all parts are included.
Meriva® MMD201 supports dual SD card recording, but you must ensure the consistency of
the two SD card (same capacity, brand and production batch). If there are any problems,
please contact us as soon as possible.
Product Overview
Meriva® MMD201 is cost-effective equipment specially designed for mobile surveillance. It
uses high-speed processor and embedded operating system, combined with H. 264 video
compression/decompression technology and GPS locating technology. It can realize CIF HD1
and D1 video recording and vehicle driving information recording, with the data recorded
down to be used for data query and accident analysis. Meriva® MMD201 is designed
exquisitely with advantages of flexible installation, easy maintenance, etc.
Features
1) Total resources: 4 CH D1 100/120fps.
2) Dual cards recording - Support cycle recording (Two SD cards record one by one
circularly) and mirror recording (one is for main recording and one is for backup) with
dual 32GB/64GB/128GB SD cards.
3) Waterproof level IP54 - protects device from dust and water spray.
4) Anti-vibration - 360 degree installation without video loss.
5) Power protection – stable video recording under unstable power input.
6) Compact design – ideal solution for small vehicle CCTV like taxi.
7) Support GPS for location tracking.
8) Provide protection for abnormal power-off, which reduces video loss.
9) Support DC8~36V wide voltage input, suitable for 12V and 24V vehicle.
10) Watermark technology: prevent data tempering and guarantee the video authenticity
and legal efficiency.
Functions
1) Local recording and video playback: D1/HD1/CIF resolution optional.
2) Driving recording: provide statistics on speed, turning, brake, reverse, opening door,
etc.
3) User log: on-off status of the device, video loss, recording start time / end time, user
log in / log out, modification of the device parameters, checking the time, GPS status.
4) Import and export of the configuration file: U disk import/export device
parameters.
5) Device upgrade: support local upgrade.
6) Alarm linkage: support linkage switch value output, image display, etc.
7) Storage formatting: formatting SD cards and external USB devices.
Specifications
Items
Technical Index
Product Series
Meriva® MMD201
Function Overview
Preview, Recording, Playback, Locating
OS
Linux 2.6.24
Control Mode
IR remote control
Input
4 channels
Output
1 channel
Total Resource
4CH D1 100/120fps
Video
Electrical level: 1Vpp; Impedance: 75Ω
System
Video
Audio
Signal
Standard
NTSC/PAL Optional
Input
4 channels
Output
1 channel
Audio
Signal
Electrical level: 2Vpp; Input impedance: 9.4Ω
Standard
Display Split
1/4
GPS information, alarm, temperature, voltage,
Display
OSD
device information, firmware version, MCU
version
Operation
Semi-transparent GUI
Interface
Video/Audio
H.264/ADPCM
Compression
Recording
Image
Resolution
PAL: D1(704x576), HD1(704x288),
CIF(352x288)
NTSC: D1(704x480), HD1(704x240),
CIF(352x240)
Image Quality
1-8 levels adjustable (1 is the best)
Recording
Manual/schedule/Alarm (sensor trigger, speed,
Mode
acceleration, video loss, temperature)
Post-recording
0-30minutes
Playback
Channel
1 channel by local playback, 1/4 channel by
software playback
Search Mode
Date/time, channel, event
Locating
GPS
Location tracking, speed detection and time
sync
Storage
SD Card
32GB/64GB/128GB Class 10 SDXC card
USB
USB2.0 × 1
SD
SD × 2
Sensor
4 inputs, 2 outputs
Speed
1 channel pulse speed detection
Input
DC8-36V
Output
12V@500mA
Playback
Interface
Power
Impulse current: input 13.5V@1.3A
Working current: input 13.5V@1.2A,
Current
27V@0.5A
Standby current: 0A
Physical
Characteristic
Operating
Dimension
(L x W x H)
142 x 144.8 x 54.2mm
Weight
0.7Kg
Temperature
-25℃- +60℃
Environment
Relative
Humidity
Certificates
8%-90%
CE, FCC, MIL-STD-810F
System Diagram
External Interface
1) Dimension
2) Front Panel
Serial
No.
Print
Description
1
IR
Remote control receiving
2
LED
LED status indicator
3
USB
USB interface
4
SD
SD card interface
3) Rear Panel
Serial
No.
Print
Description
1
2
3
4
DC8-36V
AV IN1
AV IN3
A/V OUT
DC IN Jack
Audio & Video Input 1
Audio & Video Input 3
For Monitor
5
For GPS Antenna
6
SENSOR
Alarm I/O
7
AV IN4
Audio & Video Input 4
8
AV IN2
Audio & Video Input 2
Operation Instructions
User Login
1) Login: when the device is started, press the button Startup/Shutdown or Settings on the
control panel, then you enter the following Login page.
2) Input the device No.: Enter the number in the bracket.
3) Input password: Enter the user password or admin password. You can only search video
and review infomation menu; if you enter with the admin password, you can set the device
parameters as well.
Tips: User default password is 22222222, and Admin password is 88888888.
Local Rec. Search, Playback and Backup
1) Rec. Search: can search records according to file types, recording channels, date, start/end
time; includes two types of file (green block means normal video, red block means records
of that day contains alarm video).
The search result is displayed as follows.
2) Rec. Backup: select the channel and time of the file for playback, press the key “Enter” to
start playback.
3) Rec. Data Export: if there is record file in the channel you choose, press the button
“Export” to export all the files in the effective period to the storage device which is
connected to the USB interface.
Format
Click “System” in the main menu, choose “Format”. You can separately format the internal
SD card and the external U disk.
Note: both new hard disk and SD card should be formatted when it is used for the first
time.
Dual-Card Recording Modes
M1-C104 supports dual-card cycle recording and mirror recording; you can switch dual-card

recording modes through “Record”
“Other Settings”. When you switch the modes the
storage cards may be formatted. Please note that Meriva® MMD201 supports dual card
recording only when you ensure the consistency of the two SD cards (capacity, brand,
production batch).
Note for the overlay in cycle recording:
a.Start to switch to the other card when there is less than 768M left in the current card.
b.Start to overlay when the total capacity of the two cards is less than 3G.
c.Stop overlaying when the total capacity of the two cards is more than 4G.
d.Delete the earlier records before the later ones.
Event Settings
Note: in this manual, event means records generated by sensors, video loss, over speed or
other limit conditions.
1) Sensor Settings
a. ENABLE: when it is “OFF”, the event is logged down but not triggers record; when it is
“ON”, the event not only is logged down but also triggers record.
b. Name: enter the text name to identify the source of each sensor, e.g. DOOR OPEN or
REVERSE.
c.OSD: users can identify the OSD with characters, which is recorded down in the video file
when trigger event happens. When playback the video, the OSD character can display after
you press “ENTER” on remote control.
d.SET:
HIGH - low level effective; the corresponding sensor signal is sent when the sensor input is
higher than 3.8 V.
LOW - high level effectively; the corresponding sensor signal is sent when the sensor input
is lower than 0 V.
e.ALARM: “OFF” means the signal triggered is normal event; “ON” means the signal
triggered is alarm event.
f. LOCK: “OFF” is corresponding to video signed as “U”, which can not be locked; “ON” is
corresponding to video signed as “L”, which can be deleted only when unlocked. (The
unlock time can be set through the lock file protection time.)
2) Sensor Trigger Action
a.FULL SCREEN: “OFF” means to shutdown this function; “ON” means that the
corresponding video of the channel would display in the direct screen when the sensor
signal of that channel is triggered.
b. 3G ACT: “OFF” means to shutdown this function; “ON” means that the 3G module would
be activated once the sensor signal is triggered, and then upload the screenshot.
System Upgrade
1) Copy the software to the folder “dvrupgrade” in the U disk;
2) When the device is start, insert the U disk which contains the upgrade file;
3) Click “System” in the main menu, select “Upgrade” and click the button “UPGRADE”, then
the system upgrade starts.
4) During the upgrading, the indicator in the front panel flashes and the screen displays
“System Update”;
5) When the upgrade is finished, the device will automatically restart; and the screen
displays “System Initializing”;
6) After the device restarts, enter the “UPGRADE” page to make sure if the current version is
the latest one.
Reference Appendix
Storage Capacity Calculation
1) Image Quality & Streams
Stream
(Kbps)
Image
1
2
3
4
D1
2048
1536
1230
HD1
1280
960
CIF
800
600
5
6
7
8
1024 900 800
720
640
768
640
560 500
450
400
480
400
350 312
280
250
2) Rec. File Size Calculation
Rec. file size for each channel is:
Recording time (s) x Stream (Kbps) / 8 / 1024 = File Size (MB)
e.g. The file size of the channel-1 with D1 image quality within 1 hour: 3600 x 2048
Kbps / 8 / 1024 = 900 MB
3) Image Quality & Resolution
Resolution
Image Quality
1
2
3
4
5
6
7
8
D1
900
675
540
450
395
351
316
281
HD1
562
422
337
281
246
219
198
176
CIF
351
264
211
176
153
137
123
110
Frequently Asked Questions
1) Can’t Start

Check the input power, whether the power wire is connected correctly, whether the
ground wire is connected back to the battery, and whether the fuse on the power wire is in
good condition.

Check whether the ACC signal wire input to the power is with voltage higher than 7 V.

Check whether the device key is closed.
2) Always in Restart Status

Check whether the voltage is insufficient. If the voltage is less than the start-up voltage of the device,
the device would always restart.

The problem in hard disk/SD card may cause the failure to start. Take off the storage part and check
whether it is broken down.
3) Can’t Record

Check whether the storage disk is installed, whether it is in good contact, and whether the disk can be
read normally in computer.

Check whether the storage disk is formatted. The storage disk should be formatted before normally
storing record files.

Check whether there is video signal input into the device from camera, and whether there is
video/image on the screen.
4) No Voice in Record File

Check whether there is an external pickup, or whether the camera features with the function of audio
collection.


Access to Video Channel Settings, check if Audio is set on.
There must be video input into the channel for recording and it must record normally.
5) GPS Works Abnormally

Check whether the GPS antenna is installed correctly. There is a silk print logo on the GPS antenna
holder behind the host device.

Check whether the antenna receiver is sheltered. It should not be covered by any stuff, which may
cause it not to receive signals.

Environmental influence such as tree shades, being inside tunnel,
driving near tall building or elevated roads, thunderstorms or other weather influence, etc.
can also cause signal loss or receiving wrong signals.
6) Can’t Shutdown in Ignition Switch Mode

Check if the ACC line connection mode is correct; and check whether there is voltage on ACC yellow
line when the key is turned off.

If the device has been set with schedule recording, it can’t shutdown if it is still during recording time
of the task table.
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