JVC TK-C1481 manual Mounting the lens, DC Iris Video Iris, Gnd

Mounting the lens

Mount the lens according to the procedures described below.

	C
BF	LO

(b)F

(c)

3.

VIDEO

DC

2.

IRIS

VIDEO

DC

4.

1. Before mounting a lens, check whether it is a C-mount or CS-mount lens.

To change the mounting method, loosen the back-focus locking screw (M 2.6) using a Phillips head screwdriver, turn the back-focus adjusting ring with your fingers or the screwdriver and change the mounting method.

Dimension (b) of the lens shown in the illustration must be as shown in the table below. If (b) exceeds the value in the table, it may damage the inside of the camera or correct mounting may be im- possible; never use such lenses. Do not attach the C-mount lens when using a CS-mount.

Lens	Flange back (c)	Dimension (b)
C mount lens	17.526mm	10mm or less
CS mount lens	12.5mm	5.5mm or less

The F mark indicates a focal point.

2. Mount the lens on the camera by turning the lens clockwise. Adjust its position.

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3

1

4

2

Attached 4 pin plugs

3. When using an auto-iris lens with an EE amplifier, turn the switch to the “VIDEO” side. When no EE amplifier is equipped, turn the switch to the “DC” side.

4. If the lens has an auto-iris mechanism, connect the lens cable after checking the pin arrangement.

If the lens cable has a different type of plug, use the 4-P plug supplied.

Lens	DC IRIS		VIDEO IRIS
Pin No.	(does not contain EE amplifier)		(contain EE amplifier)
1	Brake	–	9V [max 50mA]
2	Brake	+	NC
3	Drive	+	VIDEO
4	Drive	–	GND

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