Videotek VTM-2000 Specifications download pdf (Page 45)

General Operation

VTM Series Installation and Operation Handbook

3-7

Rotate the knob to move the menu cursor up and down.

External Reference

Press to select the external reference selection INT or EXT. The

INTERNAL reference is the built in reference. The EXT modes are:

• Input B or A = BB (Blackburst) or TRI (Tri-level sync) (when LOOP is selected in

the EXT menu). If used, terminate with a 75 Ω terminator.

• Input A = BB (when SPLIT BB is selected in the EXT menu)

• Input B = TRI (when SPLIT TRI is selected in the EXT menu)

The default reference selection is INT. To change the external reference selection:

1. Press and hold the EXT button to access the External Reference menu. Table 3-2

shows the EXT menu selections.

2. When EXTERNAL REFERENCE is highlighted, press the RIGHT NAVIGATION

button to open the menu selections.

3. Press the UP or DOWN NAVIGATION to highlight the reference, and press the

ENT button to select the reference.

4. Press EXIT to exit the menu.

Table 3-2. EXT menu

LOOP (Default)

SPLIT – FOLLOW

SPLIT – BB

EXTERNAL

REFERENCE

SPLIT - TRI

SETUP

Press ENT

External Reference

The External Reference submenu is used to set the external reference input as a looping

input (one input) or a split input (two inputs). The selections are:

• If LOOP is selected, the external reference selection has no effect.

• If SPLIT - FOLLOW is selected while in split-mode, the external reference will be

Blackburst for SD and Tri-level for HD.

• If SPLIT- BB is selected in split mode, then external reference A is used.

• If SPLIT- TRI is selected in split mode, then external reference B is used.

When in External Reference (REF:EXT) and in a cross reference condition (e.g. HD

referenced to BB, or SD referenced to TRI), the waveform will not roll if the frame

rates match. A horizontal offset shows the timing difference between the External

Reference and the input signal at the start of the frame.

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Videotek VTM-2000 Specifications Page 45