Fisher VCB-3424 Mounting the Lens, Rewiring the lens cable in the lens iris plug

MOUNTING THE LENS

		Rewiring the lens cable in the lens iris plug
1	1	Prepare the lens cable.
		Cut the cable at the plug, then remove approx. 8 mm of the cable sheath and strip about 2 mm from each wire.
2	2	Install the lens iris plug.
		Solder the cable to the pins following the correct pin layout (refer to the table and illustrations), then close
		the plug cover.
	Pin layout

					DC type lenses	VIDEO type lenses
				1	Brake coil (–)	+12 V DC (50 mA max.)
2	1	2	1	2	Brake coil (+)	Not used
4	3			3	Drive coil (+)	Video output (1.0 Vp-p, high impedance)
		4	3	4	Drive coil (–)	Ground (for video signal and DC power)

1

2 ADJ. 1 LOCK

3

Flange-back adjustment

If the pick-up surface is not correctly positioned with relation to the lens focal point, the picture will be out of focus (in particular when using auto-iris power zoom lenses, sold separately). If that is the case, adjust the flange-back position as described below.

1Using a + screwdriver, loosen the FLANGE BACK LOCK screw (M2:+).

Set the zoom lens to the maximum telephoto position, set the focus using the focus ring on the lens.

2Set the zoom lens to the maximum wide angle position, set the focus using the FLANGE BACK ADJ. screw.

3Repeat steps 2 and 3, until the image stays in focus when changing from a telephoto shot to a wide angle shot. When the setting is complete, tighten the FLANGE BACK LOCK screw.

8 English