Council Regulation (EEC) No 3821/85 of 20 December 1985 on recording equipment in road transport (c. 3821)

[F1 [F2 ANNEX I B U.K. REQUIREMENTS FOR CONSTRUCTION, TESTING, INSTALLATION AND INSPECTION

Textual Amendments

F1 Inserted by Council Regulation (EC) No 2135/98 of 24 September 1998 amending Regulation (EEC) No 3821/85 on recording equipment in road transport and Directive 88/599/EEC concerning the application of Regulations (EEC) No 3820/85 and (EEC) No 3821/85.

F2 Substituted by Commission Regulation (EC) No 1360/2002 of 13 June 2002 adapting for the seventh time to technical progress Council Regulation (EEC) No 3821/85 on recording equipment in road transport (Text with EEA relevance).

Appendix 6 EXTERNAL INTERFACES

1. HARDWARE U.K.

1.1. Connector U.K.

[INT_001] The downloading/calibration connector shall be a six pin connector, accessible on the front panel without the need to disconnect any part of the recording equipment, and shall comply with the following drawing (all dimensions in millimetres):

The following diagram shows a typical six pin mating plug:

1.2. Contact allocation U.K.

[INT_002] Contacts shall be allocated in accordance with the following table:

Pin	Description	Remark
1	Battery minus	Connected to the battery minus of the vehicle
2	Data communication	K-line (ISO 14 230-1)
3	RxD — Downloading	Data input to recording equipment
4	Input/output signal	Calibration
5	Permanent power output	The voltage range is specified to be that of the vehicle power minus 3V to allow for the voltage drop across the protective circuitry Output 40 mA
6	TxD — Downloading	Data output from recording equipment

1.3. Block diagram U.K.

[INT_003] The block diagram shall comply with the following:

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