User`s manual

T460/461/T462 Manual 26th Sept 2008. V2.79 Part B © JED Microprocessors Pty Ltd

Note: Even though the BenQ manual shows a D sub 9 connector, in fact the tested projector has a mini-DIN 8-pin socket.

Note: The BenQ PB8140/8240/8250 models seem to load the RS232 cable with some sort of diode clamping to ground

and to +5 volt. This means that when plugged into the projector the RS232 lines will have a voltage range of only –0.8

to +5.2 volts measurable on them, rather than the normal +/- 9 volts.

However, the projector seems to run OK with this limited voltage range, and the signal from the T460 is safely current

limited, so can cope with this weird behaviour! The output from the projector is also this voltage range, which the T460

handles OK. When not plugged in, the T460 output will have normal +/- 9 volt signals.

Boxlight MP60/63e … see Everest

Canon projectors: XEED/REALiS SX6/SX50/SX60/X600. (For LV see NEC group 6, Sanyo)

There is only one audio in, and no audio out. For audio switching, use a JED T461 audio box.

Supports Mute On/Mute Off keyboard but NOT Freeze On/Off. Supports aspect ratios: use source names: “Set reg 4:3”

and “Set reg 16:9”. Lamp hours shown as a range only, in 8 groups.

T460 Channel Message Connector / function Screen display

Channel 1 A-RGB1<0Dh> DIGITAL IN / ANALOG IN-1 ANALOG-PC1

Channel 2 A-RGB2<0Dh> D-SUB 15: ANALOG IN-2 ANALOG-PC2

Channel 3 VIDEO<0Dh> RCA VIDEO IN VIDEO

Channel 4 S-VIDEO<0Dh> S-VIDEO IN S-VIDEO

Channel 5 COMP<0Dh> D-SUB 15: COMPONENT COMPONENT

Channel 6 D-RGB<0Dh> DIGITAL IN / ANALOG IN-1 DIGITAL PC

Channel 7 D-VIDEO<0Dh> DIGITAL IN / ANALOG IN-1 DIGITAL VIDEO (not SX50)

Channel 8 SCARTRGB<0Dh> D-SUB 15: SCART SCART (not SX50)

Don’t forget to set all unused T460 channels to “Skip” to jump over blank/unused inputs in the above table.

RS232 connections to Canon projector SX50

Communication is at 19200 8N2. To connect the T460 to these projectors use a male 8-pin mini-DIN on the cable:

Function/Direction T460 “projector”

Connection

Projector Connector

(Male on cable)

Ground Ground 8-pin mini-DIN pin 4

Data from T460 to projector Tx 8-pin mini-DIN pin 5 (RXD)

Reply data from projector to T460 Rx 8-pin mini-DIN pin 3 (TXD)

Plus 9 volt CTS/DTR to projector N/C N/C

Mini-DIN 8

solder side

43 5

1 2

6 7 8

After installation wiring of any projector to a T460, use a multimeter to check voltages of –9 on BOTH TX and RX pins in any

installation, as described in the troubleshooting part of this manual.