DRAKE MPM860AG Manuel - Sayfa 3

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Installation

CONNECTIONS AND CONTROLS

All connections to and from each processor are

made through the rear panel.

INSTALLATION NOTES

Level adjustment provides optimum performance

in multi-channel installations. The output levels

should be checked periodically with a spectrum

analyzer or appropriate meter to insure that

output levels are properly set.

RACK MOUNTING

Adequate ventilation is very important in rack

mounting installations. Excessive heat will

shorten component life and performance.

The RMM12 or RMM4A chassis' should be

spaced at least 1RU apart whenever and

wherever possible. Some air movement is a

mandatory requirement in enclosed rack cabinets.

POWER SUPPLY REQUIREMENTS

Power for units mounted in the RMM12 rack

mounting chassis is to be supplied by a Drake

model PSM121 Mini Mod Series Power Supply. A

single PSM121 can power up to twelve (12) units

of most Drake Mini Mod Series models.

Likewise, an RMM12 can hold up to twelve (12)

Drake Mini Mod Series models as well as a single

PSM121 Mini Mod Series Power Supply.

The power supply in the four-position Drake model

RMM4A system is built into the chassis and cannot

be removed. The RMM4A will securely hold and

power up to four (4) units of the MPM860AG.

FREQUENCY CHART

The table on the following page shows the

standard CATV channel coverage. Where an oﬀset

is indicated, this amount of positive frequency

oﬀset is added tot he frequency indicated in the

middle column. As shown, this occurs only on

channels required to be oﬀset by the FCC.

HRC or IRC frequencies can be set by means of an

internal jumper (see Figure 3).

No jumper will result in the STD channel plan

selection.

TABLE 1:

CATV

+100

Output Channel

Visual Carrier

Frequency

Switch Setting

Frequency (MHz)

Oﬀset (kHz)

55.25

NONE

61.25

NONE

67.25

NONE

77.25

NONE

83.25

NONE

175.25

NONE

181.25

NONE

187.25

NONE

193.25

NONE

199.25

NONE

205.25

NONE

211.25

NONE

121.25

±12.5

127.25

±12.5

133.25

±12.5

139.25

NONE

145.25

NONE

151.25

NONE

157.25

NONE

163.25

NONE

169.25

NONE

217.25

NONE

223.25

+12.5

229.25

+12.5

235.25

+12.5

241.25

+12.5

247.25

+12.5

253.25

+12.5

259.25

+12.5

265.25

+12.5

271.25

+12.5

277.25

+12.5

283.25

+12.5

289.25

+12.5

295.25

+12.5

301.25

+12.5

307.25

+12.5

313.25

+12.5

319.25

+12.5

325.25

+12.5

331.25

+25.0

337.25

+12.5

343.25

+12.5

349.25

+12.5

355.25

+12.5

361.25

+12.5

367.25

+12.5

373.25

+12.5

379.25

+12.5

385.25

+12.5

391.25

+12.5

397.25

+12.5

403.25

NONE

409.25

NONE

415.25

NONE

421.25

NONE

427.25

NONE

433.25

NONE

439.25

NONE

445.25

NONE

451.25

NONE

457.25

NONE

463.25

NONE

469.25

NONE

475.25

NONE

481.25

NONE

487.25

NONE

493.25

NONE

CATV Channel Output Frequencies

CATV

+100

Output Channel

Visual Carrier

Switch Setting

Frequency (MHz)

499.25

505.25

511.25

517.25

523.25

529.25

535.25

541.25

547.25

553.25

559.25

565.25

571.25

577.25

583.25

589.25

595.25

601.25

607.25

613.25

619.25

625.25

631.25

637.25

643.25

91.25

97.25

103.25

109.25

115.25

CATV +100

CATV

+100

100

649.25

101

655.25

102

661.25

103

667.25

104

673.25

105

679.25

106

685.25

107

691.25

108

697.25

109

703.25

110

709.25

111

715.25

112

721.25

113

727.25

114

733.25

115

739.25

116

745.25

117

751.25

118

757.25

119

763.25

120

769.25

121

775.25

122

781.25

123

787.25

124

793.25

125

799.25

126

805.25

127

811.25

128

817.25

129

823.25

130

829.25

131

835.25

132

841.25

133

847.25

134

853.25

135

859.25

Frequency

Oﬀset (kHz)

NONE

+25.0

NONE