DRAKE MPM860AG Handmatig - Pagina 2

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FRONT PANEL CONTROLS and INDICATORS

F1 - POWER/ERROR Indicator

Lights when the unit is connected to the

required source of DC power via the rear panel

DC INPUT connector. A flashing condition

indicates an invalid channel setting or other

conditions that would cause the unit to operate

on an invalid channel. The RF output is

switched off for flashing (ERROR) conditions.

F2 - Channel Select Switch

Sets the desired operating channel for standard

CATV channels 02 through 135 or Broadcast

TV channels 02 through 69. See also Item F3

which sets the type of channel (CATV or

Broadcast TV) and sets the leading "1" for

CATV channels 100 through 135.

F3 - Mode Switch

Sets the type of channel, CATV or Broadcast TV

("BC TV"). The first position of the switch

MPM860AG

POWER/

ERROR

CATV

BCTV

+100

GAIN

Figure 1

("+100") sets a leading "1" for CATV channels

100 through 135. See also Item F4 for setting

the channel. Here are two examples:

Setting for CATV

channel "125"-

channel "25"-

CATV

BCTV

CATV

+100

F4 - Gain

This screwdriver adjustment permits adjust-

ment of the MPM860AG gain over a minimum of

10 dB range. Adjust to set output level to +45

dBmV.

The MPM860AG is linear and if the input level

is changed, the MPM output level will follow.

R1 - CH 3 / CH 4 INPUT

+5 dBmV RF input.

R2 - Ch 3 / CH4 SELECT

Selects RF input between channel 3 and

channel 4.

CATV

BCTV

REAR PANEL CONNECTIONS / INTERNAL JUMPERS

CHANNEL 3/4 IN

CH 4

CH 3

+5 V

+12 V

GND

DC INPUT

RF OUT

MPM860AG

Figure 2

R3 - DC INPUT Connector

This 3-pin connector (Male) accepts the

appropriate mating DC power cable.

R4 - RF OUTPUT

This is the +45 dBmV RF output.

INTERNAL JUMPER SETTING: STD, HRC, IRC

STD

Drawing is not to scale.

HRC

No jumper installed gives STD setting.

IRC

Figure 3