Clark Systems MVD1001 Buku Pegangan & Panduan Instalasi - Halaman 6

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Mode selection

Detectors are normally supplied set to detect approaching vehicles travelling at speeds

greater than the threshold of 8.5 Km/Hr (position 0). This is the normal operating mode.

Other modes are available as shown in Table 2 which may be selected according to local

traffic engineering requirements. The bi-directional (both) mode is intended for shuttle

working applications.

Mounting

A bracket is available to facilitate mounting on the upper signal head bracket using an M10

nut and bolt (supplied with bracket). Most signal head brackets are pre-drilled with an

appropriate hole, if not a hole must be drilled.

The detector is fixed to the bracket using two M6 nuts (supplied with bracket). There are

two mounting positions. The upper mounting position should be used where the signal

head backing board protrudes significantly above the head, otherwise the lower positions

should be used. In all cases the radome of the detector should be visible above the

backing board. See Photograph 3.

Photograph 3 -

Installed Detector

(Detector fitted in 'lower'

position on bracket shown)

S00104101MVDHandbook.doc

July 2002

Position

Low Speed Threshold (Km/Hr)

Table 2 - Mode Settings

Vehicle Direction

8.5

Approaching

6.6

5.2

4.0

8.5

Both

6.6

5.2

4.0

8.5

Receding

6.6

5.2

4.0

Not Used