NetMedia RM70-W, NM-RM70-W Specifications

NM-RM70-W

In-Wall Coax-Powered Modulator

Baseband A/V to SDTV Converter

NM-RM70-W

The NetMedia RM70-W in-Wall Coax-Powered Single Channel Modulator converts composite video and stereo
audio to a monaural television signal. It mounts in a typical single gang junction box. It is powered over the same
coax cable that returns the video broadcast signal. It can even supply remote power to 12VDC cameras for One Wire
Video™ Installation. 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.

Product Includes:

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

2. Power Injector and 12V DC 100mA Power Transformer (Center Conductor Positive).

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

Base Plate

Mount to single gang
junction box.

Audio Input Connector

Combines stereo input for
monaural output.

Video Input Connector

RCA composite input for video
sources such as cameras, quads,
DVR’s, DVD’s, etc.

Power Output Connector

12V DC, center positive. Use power
supply that provides enough
current for modulator (100mA)
and camera.

Video/Power F-Connector

Power and video share one coax

through female F connector.

Switch Bank

Behind End Plate -

Sets output channel:

UHF 14-69

CABLE 70-94, 100-125.

Gain Adjustment

Behind End Plate -

turn clockwise to increase

output level to over +30dBmV.

End Plate

Remove to access Switch Bank

and Gain Adjustment.

Power Injector

Connects power transformer to coax

for One Wire Video™ Installation

(when also powering 12VDC camera).

FEATURES

One Wire Video™ installation

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 and Power Injector

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:
Video Input Connector:
Audio Input Connector:
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

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)

MAN-RM70-W REV0708A

NM-RM70-W

Combiner

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 coax cable from the modulator’s Video/Power F-Connector to the “MOD” side of the Power Injector.
Connect the “TV” side of the Power Injector to the grounded coax from a television or distribution system. If also
providing power for a 12V DC camera, connect the Power Output Cable from the modulator’s Power Output
connector to the camera; use a power supply that provides enough current for both devices. Connect the 12V DC
power supply to an AC outlet and the Power Injector.

3. Connect A/V sources to Audio and Video Inputs. Check modulator picture on the programmed TV channel. When
satisfied, fasten Base Plate to single gang junction box.

NM-RM70-W

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.

Main cable or

Antenna

Modulator

Power Injector

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

when there are no clear cable channels.

Splitter/

Combiner

Distribution

Panel

or Splitter

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

Television

Television

Modulator

Sat In

Ant In

Dual LNB

Satellite

Power Injector

Satellite
Multiswitch
w/Ant input

Satellite
Diplexer

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

MAN-RM70-W REV0708A

Satellite Receiver

Television