Users Manual Owner's manual

DMXDart Operation

Oscilloscope Sync

The DMXDart provides oscilloscope users with a handy tool that will help

synchronize an oscilloscope’s display with characteristics of the incoming DMX

data stream. The Rx Sync test transmits a high-speed pulse from the 1/8” TRS

jack on the top panel of the DMXDart. Using this feature requires an adapter

cable (not included) to connect to the trigger input or alternate channel of an

oscilloscope. The pin-out is as follows:

Tip = Ground

Ring= Sync

Sleeve=Power supply input

The sync pulse is a 1uS wide 4V peak pulse that is output whenever the given

signal parameter is present.

Note:

An oscilloscope faster than 16MHz is required for an accurate look at the DMX

signal.

To sync a scope to the incoming signal, connect the scope’s trigger input and

ground to the scope sync adapter. Connect the scope’s primary probe to the

RX+ or – (pin 1 or 2 on the DMX input) and the reference to the shield of the

incoming cable. Enter the RX sync test function by selecting 6 – Rx Sync Test

Mode from the Receive DMX512 submenu:

Rx Sync Test ModeRx Sync Test Mode

DisabledDisabled

Sync: Sync: OffOff

^ ^

Use the Ý and Þ keys to choose the portion of the signal to synchronize to. The

available characteristics are:

• Break,

• Start Code

• Any frame of data (1 to 512)

The sync port provides technicians with a means to obtain a quick and easy look

at the electrical characteristics of the incoming signal.

DMX 512 Monitor

AT THE TIME OF THIS MANUAL’S PUBLICATION, THIS FEATURE IS STILL UNDER DEVELOPMENT. DMX

MONITOR WILL PROVIDE A REAL-TIME DISPLAY OF 512 DIMMER LEVELS, AND DMX SIGNAL

CHARACTERISTICS VIA SERIAL CONNECTION TO A PC RUNNING ERICOM POWERTERM™ 32

SOFTWARE.