NetMedia MM70 User Manual

Single Channel Modulator

NM-MM70

The NetMedia MM70 Micro-Modulator converts composite video and stereo audio to a monaural televi­sion signal. The selectable channel is viewed with a standard television (SDTV) tuner. Once modulated,
the signal is no longer bound to a single monitor or TV; it can be combined with antenna, cable, or satel­lite signals for distribution to multiple TV’s throughout the location. This provides convenient viewing
access to security cameras, DVR’s, or other audio/video (A/V) sources such as DVD’s and VCR’s.

Product Includes:

1. Modulator Assembly (Video Input Connector, Audio Input Connector, RF Output Connector,
Power Input Connector, End Plate, Switch Bank, Gain Adjustment, Power LED).

1

2V DC 100mA Power Transformer (Center Conductor Positive).

2.

3. RCA Video Cable, 3.5mm Stereo to Dual RCA Audio Cable.

Baseband A/V to SDTV Converter

NM-MM70

RF Output Connector

Connects modulated output
channel to video distribution
system and televisions.

Audio Input Connector

Combines stereo input for
monaural output.

End Plate

Remove to access Switch Bank
and Gain Adjustment.

Gain Adjustment

Behind End Plate ­turn clockwise to increase
output level to over +30dBmV.

FEATURES

Digital PLL locked audio & video - no drift

Combines with existing TV channels

Viewable on multiple televisions

UHF & Cable channel coverage

Channel retained during power outage

Tough aluminum housing

Includes power supply

5 year limited warranty

SPECIFICATIONS

Modulation Method:
Output Channel:
Output Level:
Output Connector:
Video Input Connector:
Audio Input Connector:
Audio Output:
Cable Type:
Power Requirement:
Power Connector:
Housing Size:
Weight:

Video Input Connector

RCA composite input for video sources

such as cameras, quads, DVR’s, DVD’s, etc.

Power Input Connector

12V DC 100mA, center positive.

Switch Bank

Behind End Plate -

Sets output channel:

UHF 14-69

CABLE 70-94, 100-125.

Power LED

Indicates that unit is on.

Digital Crystal PLL

SDTV: UHF 14-69, CABLE 70-94, 100-125

Selectable, 0 to +30dBmV

Female F, 75 Ohm

RCA Phono, 75 Ohm, 1 Vp-p

3.5mm Stereo, 75,000 Ohm, 1 Vp-p
Monaural

RG59, RG6 or better

12V DC, 100mA

5.5mm OD, 2.1mm ID, center positive

3.2“ long x 2.2” wide x 0.9“ high

4.0 oz.

(subject to change without notice)

NetMedia, Inc., 10940 N. Stallard Place, Tucson, Arizona 85737 [phone] Fax: [phone] Email: [e-mail] www.netmedia.com

MAN-MM70 REV0708A

NM-MM70

Installation Procedures:

1. Remove the End Plate from the modulator assembly and set the channel with the switches as shown in
Figure 1. Choose an unused channel that matches the tuning mode of the televisions. With antenna tuning,
choose a UHF channel from 14-69. With cable tuning, choose a CABLE channel from 70-94 or 100-125. There
must be at least one blank channel on either side of the modulated channel to separate it from any other
broadcast, cable, or modulated source. When combining with cable service, be aware that digital data
typically interferes with channels 80-117, even when not subscribed to digital services. If no channels are
available then a filter such as NetMedia’s CNF7080 (ch. 70-80) may be necessary.

2. Connect a video source to the modulator’s RCA Video Input Connector. Adapter’s such as BNC to RCA may
be used as necessary. If audio is available, connect it to the RCA jacks of the Dual RCA Audio Cable. Insert the
Audio Cable’s 3.5mm plug into the modulator’s Audio Input Connector.

3. Connect a coax cable from the modulator’s F connector to the coax from a television or distribution system.
Connect the 12V DC 100mA power supply to an AC outlet. The modulator picture is now available on the
programmed TV channel.

NM-MM70

OFF

ON

Add numbers

switched ON

to set channel.

80 40 20 10 8 4 2 1

CABLE Channel 125

OFF

ON

80 40 20 10 8 4 2 1

UHF Channel 25

Figure 1 - Setting the modulated channel with the switches. Valid channels are UHF 14-69, CABLE 70-94, 100-125.

Distribution

Modulator

Main cable or

Antenna

Optional Ch. 70-80 Filter (NM-CNF7080)

when there are no clear cable channels.

Splitter/

Combiner

Panel

or Splitter

Figure 2 - Connecting the modulator to an antenna or cable service and distributing to multiple televisions.

Television

Television

Modulator

Dual LNB

Satellite

Satellite
Diplexer

Satellite
Multiswitch
w/Ant input

Sat In

Ant In

Figure 3 - Connecting the modulator to a satellite system and distributing to multiple televisions.

NetMedia, Inc., 10940 N. Stallard Place, Tucson, Arizona 85737 [phone] Fax: [phone] Email: [e-mail] www.netmedia.com

Satellite Receiver

Television

MAN-MM70 REV0708A