DRAKE 806DM Manuel d'instruction - Page 4

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Front and Rear Panel Controls and Connections

Front Panel Controls and Indicators

F1 - CHANNEL Number Display

Displays off air broadcast channels (ANTENNA mode)

with an "A" followed by a channel number.

In cable mode, a three digit channel number is displayed.

Also displays CATV channels with a 3 digit numeric

display of the EIA channel number.

F2 - LOCK / UNLOCK Switch

Press to lock or unlock the channel selection and

ANTENNA/CABLE functions. The unit is locked when a

decimal point is displayed between the 2nd and 3rd digits

in the display.

F3 - CHANNEL

Select Switch

These buttons are used to increment or decrement the

selected channel. The channel can only be changed

when the unit is unlocked (decimal point is not illuminated

between 2nd and 3rd digits). See F2 .

Rear Panel Connections

VIDEO

AUDIO

OUTPUT

R1 - VIDEO OUTPUT Connector

This is the 75 Ohm baseband video output at a nominal

1.0 Vp-p level which is adjustable with the front panel

VIDEO LEVEL control

R2 - AUDIO OUTPUT Connector

This is the demodulated audio output at a nominal

350 mV rms. This level is adjustable with the front panel

AUDIO LEVEL control.

R3 - RF Input Connector

This is the 75 Ohm input to the demodulator circuits from

an off-air television receiving antenna or from a CATV

cable input.

CHANNEL

LOCK

CHANNEL

ANTENNA

UNLOCK

CABLE

Figure 1

F4 - ANTENNA / CABLE Switch

Press to toggle between ANTENNA and CABLE channel

tuning. When the ANTENNA mode is selected, an "A" will

be displayed in the far left position of the channel display.

See F1 . The ANTENNA/CABLE selection can be made

only if the unit is unlocked. See F2 .

F5 - AUDIO Output Level Control

Use this control to adjust the demodulated audio output

level presented at R2 .

F6 - VIDEO Output Level Control

Use this control to adjust the demodulated video output

level presented at R1 .

ANT/CABLE

INPUT

Figure 2

R4 - AC Receptacle

Provides a 115 VAC convenience outlet for powering of

other modulators, etc.

R5 - LINE CORD

This is the AC power line. Connect to a nominal 115 VAC

±10%, 60 Hz source.

806DM AGILE NTSC DEMODULATOR

AUDIO

VIDEO

LEVEL

120 VAC

60 Hz 10 W

600 VA MAX