Pelco C707M-B, TVJ6AC-1/LPP Track Adjustments, Care and Maintenance, Models, Recommended Controls

6.0 TRACK ADJUSTMENTS

In order for a zoom lens to hold tracking focus through the full zoom range, the effective distance from the banking shoulder of the mounting thread to the image plane of the camera (faceplate of Vidicon) must be 0.690 inches. This is a screwdriver adjustment on most cam- eras and is referred to as the “mechanical focus adjust- ment” (see Figure 3).

If you find that your camera system does not have sharp focus upon installation, follow these procedures to ad- just the focus:

1.Select an object as a focusing target at least 75- 100 feet from the camera/lens.

2.Open iris (aperture) to fully “open” position.

3.Zoom lens out to maximum “tele” position, and adjust lens focus for sharpest picture.

4.Zoom lens back to the “wide” position, and adjust mechanical focus on the camera for sharpest pic- ture.

5.Repeat steps 3 and 4 until focus is sharp through the full zoom range.

7.0 CARE AND MAINTENANCE

Field maintenance of motorized zoom lenses is not rec- ommended. However, if maintenance or repair should be required, consult Pelco or a qualified service techni- cian.

Figure 3. Mechanical Focus Adjustment

8.0 MODELS
TVJ6AC-1	6X (12.5 to 75 mm), f1.2 mo-
	torized zoom lens, 2/3" format,
	auto iris and tapered neutral den-
	sity spot filter
TVJ6AC-1/LPP	Same as TVJAC-1 except with
	preset position potentiometers
	and tapered neutral density spot
	filter
TVJ6MS-1	6X (12.5 to 75 mm), f1.2 mo-
	torized zoom lens, 2/3" format,
	non-auto iris, with tapered neu-
	tral density spot filter
8.1 RECOMMENDED CONTROLS
MLZ6DT	Desk top lens control module de-
	signed for remote control of
	zoom, focus, and iris functions
	for motorized zoom lenses.
	Speed control is adjustable from
	the front panel. This control can
	also be used with TVJ6AC-1
	lens, however, the iris will not
	be controllable. See Figure 1 for
	system configurations.
MLZA6DT	Desk top zoom lens control with
	auto-iris servo circuitry. Pro-
	vides auto-iris operation to the
	TVJ6MS-1 lens if auto-iris func-
	tion with manual override capa-
	bility is required. Not for use
	with TVJ6AC-1 lens.

(Product specifications subject to change without notice.)

Pelco Manual C707M-B (11/96) 5