Pathway LCDM48 User Manual

LCDM48 DEMULTIPLEXER Configuration

RxD RUN

S2 S3 S4

S1

JP3

JP2

123

JP6

DP6 DP4

DP5

J3

0.3" 0.3"

JP5

DP3 DP2 DP1

5.6"

J1

V+

COM
COM
CD­CD+
ANA

J4

J5

0.75"

POWER/DATA
INPUT

9.0"

DIODE PACKS

0.25"

JP1

P1

JP4

123

123

J2

LED INDICATORS

Two LEDs are used to indicate power supply and processor run
status and data receive detection.

RUN

Glowing steadily indicates power supply and processor
OK; off indicates no power, and flashing indicates de­fective processor hardware.

RxD

Glowing steadily indicates data signal received; off in­dicates no signal present. Note that an address selec­tion out of the range of the data signal will extinguish
the LED.

OUTPUT CONFIGURATION

CAUTION:

Disconnect power from the unit before making any
changes.
Before powering up, check to make sure all jumpers are in­stalled correctly. Damage will result if the unit is powered
up with any of the jumpers in the wrong position.

For 4-12V output, install JP1 and JP2.
For 12-15V output, remove JP1 and JP2.
For positive outputs (factory default), jumper pins 2 and 3 of JP4, 5 and 6 and
install diode packs DP1-6 with the notch facing down (left).
For negative outputs, jumper pins 1 and 2 of JP4, 5 and 6, and install the diode
packs with the notch facing up (right as referenced by the above diagram) if you
have MAD1108s or down (left) if you have diodes in carriers.
If J2/J3 are used with DB25 output connectors, install JP3 to reassign the analog
output signals as shown in the Connector Legend Chart, otherwise DO NOT install
JP3.

OUTPUT VOLTAGE ADJUSTMENT

Place the unit in test mode (S1-2 on) and set the address switches to
000 or 001. Ensure that the decoder is connected to dimmer no. 1 and
JP1 & JP2 are in the correct positions. Connect a DC voltmeter between
COM and output terminal no. 1 on the circuit board. Adjust P1 to achieve
the desired full on control voltage.

CONNECTOR LEGEND

CONNECTOR J1

V+

COM

COM

CD-

CD+

ANA

PIN

1-24

25 & 26
PINOUT FOR DB25 CONNECTORS

1-12

13

14-25

12VDC @ 250mA

Power Supply & Signal Common

Power Supply & Signal Common

Signal Input USITT DMX512/AMX192
Data/Clock Complement

Signal Input USITT DMX512/AMX192
Data/Clock True

AMX192 or D54 Analog Input (optional)

CONNECTOR J2,3

Aux. Control Outputs on optional 26 pin DIL header

Channels 1-24(J2), 25-48(J3)

Signal Common

Channels 1-12 (25-36)

Common

Channels 13-24 (37-48)

CONNECTOR J4,5

Analog Control Outputs
Min. 0 to +/-4V Max. 0 to +/-15V
Max. Drive 5mA

(see OUTPUT CONFIGURATION)

ADDRESS SELECTION

Three rotary switches select the offset start address for the unit in most
configurations. In test mode, the switches set dimmers to full one at a
time. The switches are set as (S4) hundreds, (S3) tens and (S2) ones.

DIP Switch Settings

STATUS QUO HOLD TIME

Disabled (2 Sec. timeout) OFF

Enabled ( 5 Min. timeout) ON

Maintains last dimmer levels for set time on loss of input data signal

TEST AND CALIBRATE MODE

Disabled (Normal Operation)

Enabled

When enabled allows analog dimmer outputs to be brought to full one at
a time as selected by the rotary address switches.

PROTOCOL SELECT

AMX192 or D54 OFF

DMX512 ON

DMX TERMINATION

DMX Line Unterminated OFF

DMX Line Terminated ON

This switch connects a 100-ohm resistor across the DMX data pair. The
unit should be terminated if it is the last receiving device on the DMX
line, otherwise leave this switch OFF.

S1-1

S1-2

OFF

ON

S1-3

S1-4

GRAY

rev.6, ver.1.2 release2

Pathway Connectivity, 480C - 36 Avenue S.E.,
Calgary, AB, T2G 1W4 Canada

[e-mail]

www.pathwayconnect.com

tel [phone] fax [phone]

Printed in Canada

05/03