User's Manual

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Operating Instructions Digital Ally DVM-900 Wireless Microphone System

Items included in this package with part numbers

Description

DA Part Number Model Number

Remote Transceiver DVM900-RMT DVM-RMT

In-Car Transceiver DVM900-ICT DVM-ICT

ICT Mount Antenna DVM900-INA DVM-INA

Magnetic Roof Mount Antenna DVM900-EXA DVM-EXA

In-Car Charger Cradle DVM900-ICC DVM-ICC

In-Car Charger Cable DVM900-CCC DVM-CCC

Wall-Wart Home Office Charger DVM900-WWC DVM-WWC

Belt Clip DVM900-RBC DVM-RBC

Lapel Microphone DVM900-ELM DVM-ELM

System description:

The DVM-900 wireless microphone system operates as part of Digital Ally’s in-car DVR

(digital video recorder) system.

The DVM-900 wireless microphone system consists of 2 transceivers. The first transceiver,

called the In-Car Transceiver (DVM-ICT), is mounted inside the DVM.

The second transceiver, called the Remote Transceiver (DVM-RMT), is carried by the

patrolman either on his belt or lapel. The Remote Transceiver is a self-contained unit,

which includes an internal microphone, external microphone/charge jack, battery charge

terminals, internal rechargeable battery, internal antenna, and 2 buttons for Standby/Off

and Transmit Record On/Off.

The system operates in the 900 MHz ISM (Instrument Scientific Medical) band and is

license free. The system range is 1000 feet. The DVM-900 wireless microphone system

uses Frequency Hopping Spread Spectrum (FHSS) Narrow Band FM, which provides

excellent privacy, security and avoidance of interference.

In-Car Transceiver Model Number DVM-ICT

Operating Instructions:

During setup of the DVR, the operator shall program the In-Car Transceiver. The Remote

Transceiver security codes shall also be programmed at DVR setup time by sending the

command to SYNC from the DVR to the In-Car Transceiver via the SPI bus. The In-Car

Transceiver will then automatically exchange security information with up to two nearby

Remote Transceivers that are in ready to SYNC mode.

Summary of content (6 pages)

PAGE 1
Operating Instructions Digital Ally DVM-900 Wireless Microphone System Items included in this package with part numbers Description Remote Transceiver In-Car Transceiver ICT Mount Antenna Magnetic Roof Mount Antenna In-Car Charger Cradle In-Car Charger Cable Wall-Wart Home Office Charger Belt Clip Lapel Microphone DA Part Number DVM900-RMT DVM900-ICT DVM900-INA DVM900-EXA DVM900-ICC DVM900-CCC DVM900-WWC DVM900-RBC DVM900-ELM Model Number DVM-RMT DVM-ICT DVM-INA DVM-EXA DVM-ICC DVM-CCC DVM-WWC DVM-RBC DV
PAGE 2
To synchronize the In-Car Transceiver to a new Remote Transceiver, the remote can either be placed in its charging base or the remote can be placed in ready to SYNC mode by turning it on and pressing and holding the REC button for 2 seconds while continuing to hold down the power button. If the Remote is placed in ready to SYNC mode while not in the cradle, the three LEDs shall blink in sequence from red to yellow to green and repeat upon entering programming mode.
PAGE 3
Important: Use only the supplied antenna. Unauthorized antennas, modifications, or attachments could damage the transmitter and may violate FCC regulations. Remote Transceiver Model Number DVM-RM T Power Button External Mic Jack Red LED Yellow LED Green LED Microphone Record Button Operating instructions: The Remote Transceiver has an internal 550 mA hour rechargeable battery pack. Prior to the first use the battery should be charged for 12 to 15 hours.
PAGE 4
The In-Car Transceiver will confirm synchronization via the status register. If two Remote Transceiver units are found and confirmed, the process is completed. If only one Remote Transceiver unit is found and confirmed, the In-Car Transceiver will enter programming mode on the special low-power synchronization channel and attempt to program the current security and channel information into the next Remote Transceiver unit available in charge mode that it can find.
PAGE 5
If it is not synchronized with an ICT, the green LED will flash one time and begin the normal Standby mode blinking of 1 time every 3 seconds. A momentary press and release of the Power Button will indicate the Power On status of the RMT. If the unit is in Standby mode, the green LED will flash one time after release and remain in the Standby mode. If the unit is in OFF mode, the green LED will remain off after the button release.
PAGE 6
General specifications Operating Frequency Range Operating Voltage Frequency Hopping Sequences Frequencies per Sequence Range 902 – 928 MHz 3.3 to 4.5 VDC 32,768 16 1000 ft FCC Information: This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation.