DRAKE SCT3860 Інструкція з експлуатації - Сторінка 6

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Controls and Connections

FRONT PANEL CONTROLS AND INDICATORS

F1 - LCD Display - This displays the PS151 or selected

transcoder parameter and its setting.

F2 -UNIT SELECT

(Left) and

These select either the PS151 power supply or one of

ten SCT3860 transcoders. Information from the selected

unit will be displayed on the LCD display for parameter

adjustment. When either button is pressed once, the

LED of the selected transcoder will blink for about 3

seconds, but the unit selected will not change. The

second press within 3 seconds will increment ( ) or

decrement (

) to the next higher or lower numbered

unit. The PS151 power supply menu falls between

transcoder numbers 10 and 1.

F3 -

(Left) and

(Right) Buttons - Use the left or right

buttons to navigate from screen to screen to view a

parameter setting. This will not alter any settings. If in the

adjust mode, stop at the parameter you wish to adjust and

use the

(up) and

(down) buttons to adjust.

F4 -

(Up) and

(Down) Buttons - Use the up and

down arrows to adjust a parameter value when in the

adjust mode. When not in the adjust mode, pressing the

(up) button will display the software version readout,

and pressing the

(down) button will display the QAM

modulation output baud rate readout.

F5 - ENTER - Use the ENTER button to enter the adjust

mode or to save and load a new setting or settings. Hold

for 2 seconds until the display flashes to enter the adjust

mode. After adjustment using the up or down arrow

buttons, press again to save and load the new settings.

You may save one parameter at a time after it is adjusted

or wait until all adjustments are made and press to save

and load all at once.

F6 - FAN - One of five front panel cooling fans. To ensure

proper cooling, do not block these openings.

F7 - L BAND INPUTS - These are the L band inputs from

the LNB. The level must be between -70 and -25 dBm.

The L band frequency range will be in the 950 to 2150

MHz range.

F8 - LED - The LED on each SCT3860 will blink on and

off for approximately 3 seconds when that unit is selected.

When in the adjust mode, it will blink continuously. When

in the normal mode, it will be lit continuously whenever

power is applied.

DRAKE TRANSCODER SYSTEM

1.1

12.45 dB

UNIT

ENTER

SELECT

(Right) Buttons -

REAR PANEL CONNECTIONS

R1 - RS232 OUT - This RS232 serial connector can

connect to the RS232 IN connector on another rack

containing a PS150, PS151, or PS100 power supply

(included transcoders could be SCT860, SCT1860,

SCT2860, SCT3860 or SCT4860 transcoders), thus

allowing computer control of multiple racks of these units

with the same PC connection.

R2 - RS232 IN - Connecting this RS232 serial connector

to the serial port of a personal computer equipped with

Drake RS232 remote control software, allows remote

monitoring and programming of each transcoder. Alterna-

tively, can be connected to the Drake SCTeci. No connec-

tion is required for front panel control.

R3 - Fan Power- Connect the two conductor cable from

the front panel fans to this connector.

R4 - Power Out - These connectors are for connecting

the power cables from each individual SCT3860 to the

PS151 power supply. The other end of each cable can be

plugged into any one of the ten transcoders. However,

to minimize confusion, it is strongly suggested that the

left most unit (as viewed from the front panel) be con-

nected to power supply socket number 1, the second

from the left to number 2, etc. Do not attempt to use any

power supply other than this Drake supplied model.

R5 - Power In - This connector supplies power and

program control to the SCT3860. Connect a cable from

this connector to the appropriate connector on the PS151

power supply (see R4 above).

R6 - RF Output - This is the QAM output channel RF

output. The frequency range is between 54 and 864 MHz

depending upon the channel selected. The output level

is +25 to +40 dBmV, nominal, adjustable in 1 dB steps.

NOTE: Although the above discussions refer to the

SCT3860 transcoder modules, other Drake transcoders

may be mixed with SCT3860s in the same RMT150 rack

mounting tray. These include the SCT1860, SCT2860,

and SCT4860. The PS151 power supply/control module

will recognize each type of transcoder.

Also, SCT860 transcoders, although controlled by a

different power supply model, the PS100, can have the

RS232 control 'daisy chained' with the PS150 and PS151

controlled transcoders.

RF OUTPUT

RS232 OUT

POWER

RS232 IN

+12

GND

FAN POWER

100 - 240 VAC

47 - 63 HZ, 125 W