NetMedia MM70S User Manual

Single Channel Stereo Modulator

NM-MM70S

The NetMedia MM70S Stereo Modulator converts composite video and stereo audio to an MTS Stereo
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 (A/V 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. 3.5mm to 3 RCA A/V Cable.

Baseband A/V to SDTV Converter

NM-MM70S

RF Output Connector

Connects modulated stereo output
channel to video distribution
system and televisions.

Composite video and stereo audio input

A/V Input Connector

for A/V sources such as cameras, quads,

DVR’s, DVD’s, etc.

Power Input Connector

12V DC 100mA, center positive.

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

Stereo audio input and output

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

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

SPECIFICATIONS

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

Digital Crystal PLL

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

Selectable, 0 to +30dBmV

Female F, 75 Ohm

3.5mm A/V jack

Baseband, 75 Ohm, 1 Vp-p

Stereo, 75,000 Ohm, 1 Vp-p

MTS Stereo

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)

Switch Bank

Behind End Plate -

Sets output channel:

CABLE 70-94, 100-125.

Power LED

Indicates that unit is on.

UHF 14-69

MAN-MM70S REV0708A

NM-MM70S

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 A/V Cable’s yellow RCA video input jack. Adapter’s such as BNC to RCA may
be used as necessary. If audio is available, connect it to the A/V Cable’s white and red RCA audio input jacks.
Insert the A/V Cable’s 3.5mm plug into the modulator’s A/V 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-MM70S

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
Multiswitch
w/Ant input

Satellite
Diplexer

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-MM70S REV0708A