Keene RF Modulator Operating Instructions - page 2
• Ensure that the RF Modulator has a suitable power supply (see
next section), switch it on, and check that the unit’s ‘power’
LED is illuminated.
• Switch on the camcorder (or other device) and put into ‘play’
mode.
• Switch on the TV, select a vacant channel, and tune until the
picture from the output device becomes clear (refer to TV
instruction manual for correct procedure). If the TV already has
a channel tuned to your VCR, or a spare channel designated
specifically for use with a VCR, best results will be obtained by
using that channel. When tuned, make a note of the channel
number and store for future reference.
Powering the RF Modulator
The RF Modulator will work with any power source supplying
4–15V DC @ 25mA. This includes an internal battery, the source
camcorder or a suitable mains to DC transformer.
Internal battery.
Place a 9V PP3 type battery in the battery of
the RF Modulator. Ensure correct polarity.
Camcorder battery.
Most camcorders feature a ‘DC out’ jack
socket, usually located between the video and audio connections.
Use the power cable supplied with the RF Modulator to connect
this to the ‘DC in’ socket of the RF Modulator. Note that if using
this method for powering the device, the ‘power’ LED will not
illuminate until both the RF Modulator and the camcorder are
switched on.
Mains/DC adaptor
. The RF Modulator ‘DC in’ connection is a
2.1mm DC jack socket. The unit will work with any input voltage
from 4–15V DC @ 25mA, for example as output by the Keene KT5
(with 3 x ‘square’ pin mains input connector) or the Keene KT5E
(2 x round pin Euro-style mains input connector) mains adaptors.
2
Typical connection of the RF Modulator with
camcorder as output device
.
Connecting cables
If all connections are as described earlier (ie phono socket to
phono socket video plus phono socket to phono socket audio,
then a 2 x phono plugs to 2 x phono plugs (video + audio) cable
such as Keene Electronics KLD44 will be required. If the output
device has other types of connection for video and/or audio
output, see below:
Source machine
Keene Electronics
AV output
cable code
3 x RCA phono sockets
KLD44
2.5mm AV jack
KLD68
Scart socket
KLD5
8-pin mini socket
KLD17
BNC socket (video) + 2 x phono sockets (audio) KLD44 + KA115
3
VIDEO IN
TV AERIAL
POWER
Troubleshooting
Power LED doesn’t light.
Is the RF Modulator switched on?
Is there a power supply connected?
If battery, is the battery correctly installed, and fresh?
If power from camcorder, are the video, audio and power
leads connected correctly, and is the camcorder switched on
(many camcorders have auto shutdown function)?
If mains/DC convertor, is it plugged in and switched on?
No picture on TV
Are all devices correctly connected (in particular have the
audio and video connections between camcorder and RF
Modulator got reversed)?
Is the correct TV channel selected?
Technical data
Input:
Video 1 Vpp/75 ohm
Output:
PAL I (UK, Hong Kong and South Africa
Black & white or colour with audio
Factory preset UHF channel 36
Modulation depth:
75%
Dimensions:
approx 110 x 70 x 25mm
Weight:
approx 200g
4
Manufactured in England by Keene Electronics Ltd
Unit 9 Old Hall Mills Business Park, Little Eaton, Derbyshire DE21 5DN UK
Tel 0870 990 9000 Fax 01332 830551 Web: http://www.keene.co.uk