"D" Series Modulator Controls and Connections
The ChannelPlus "D" Series are digitally-tuned video modulators that convert any
baseband video and audio signal to a user-selected UHF, Ultraband CATV, Japan or
PAL channel. An internal temperature-compensated quartz crystal reference
oscillator and PLL circuitry ensure drift-free performance. The user selects the
output frequency (channel) using the "up" and "down" buttons while observing the
digital display on the front panel. Any TV connected to the output via coax can
receive the signals, when the TV is tuned to the proper channel.
OUTPUT
VIDEO OUT
VIDEO IN
LEFT
LEFT
P
O
W
E
R
RIGHT
RIGHT
Front panel - cover removed
RF Output level control.
"Up" and "down" switches:
choose output channel number.
Power LED: power is on. Modulator should be left on. There is no power switch.
Digital display,
two channels.
Power connector.
Audio inputs
Video inputs
RF output
Power connector.
Video input
RF output
Rear panel - D2VA (D1VA and PAL units are similar)
Rear panel - 6315 MTS stereo modulator
CHANNEL A
CHANNEL A
CHANNEL B
CHANNEL B
10
150
OUTPUT
VIDEO
VIDEO
LEFT
LEFT
P
O
W
E
R
RIGHT
RIGHT
C
H
A
N
C
H
A
N
A
U
D
I
O
A
U
D
I
O
B
A
The model 6315 is a single channel MTS
stereo video modulator.
Stereo video
sources (DVD players, LV players, VCRs)
will provide stereo with dbx noise reduction
on all TVs in the house.
The 6315 is
compatible with modern surround sound
processors.
Loop-thru outputs to send video and audio
inputs to a local monitor. When the loop-
thru is not being used, the supplied 75 ohm
terminator must be installed in the “Video
Out” connector.
Audio inputs: Right and Left are combined for monaural.
2
Specification: typical @ 25 C ± 5 C
O
O
"D" Series modulators
Tuning the Oscillator
1. Remove case.
2. Insert video
source.
3. Locate
appropriate
adjustable coil.
4. Connect a
frequency
counter to test
point.
5. Adjust coil to
desired audio
frequency
offset.
PAL G
5.5 MHz
PAL I
6.0 MHz
PAL K
6.5 MHz
channel A
channel B
channel B
test point
channel A
test point
channel B
adjustment coil
channel A
adjustment coil
RF output
power supply
MTS audio
performance
model 6315 only
performance
Video
Inputs
21-56
350-030
350-026
13-59
65-117
14-60
channel ranges
model number
signal/noise
65 dB
65 dB
25 dB @ 1000Hz
Certified dbx
Compatible with
Dolby full logic surround sound
20Hz - 12kHz
-60 dBC
8 watts
+30 dBmV (90dBuV)
105-125 VAC
210-230VAC
-45dBC @ 12MHz
26.0 VAC CT @ 400mA
13.5 VAC CT @ 400mA
differential phase
<3º
differential gain
< 2% (0.2 dB)
audio
1 V rms @ 47k
video
PAL G, H, I
JPN
UHF
CATV
standard
1 Vp-p @ 75
output level
input power
IM distortion
power consumption
alternate channel
output voltage
frequency range
signal/noise
separation
noise reduction
surround sound
7
