Pelco DX3016-060, DX3016-120, DX3009-060 manual Schematics for Input and Output Terminals

The REC input terminal is used to start recording. Refer to Series Recording in this step for more information. The input is active when a ground or low voltage signal is applied. The in- put is non-active when the terminal is open.

The MODE OUT output terminal is used to indicate the status of the recorder (refer to Mode Out in the Programming section for more information). It can also be used to turn on an- other recorder (refer to Series Recording in this step for more information). The output is active when the terminal is at a low voltage level and non-active when the terminal is open. Maximum current drive is 7 mA DC, and the maximum voltage is +24 VDC.

The CALL OUT output terminal is used for warnings (refer to the Warnings section for more information). It can also be used to turn on another recorder (refer to Series Recording in this step for more information). The output is active when the optical coupler is turned on and non-active when the optical coupler is turned off. Maximum current drive is 7 mA DC, and the maximum voltage is +24 VDC.

POWER ON/POWER OFF/￿ ALARM IN/REC/CLOCK ADJ￿

Input terminal ￿ 5V

• Input Circuit

10kΩ￿ 5V

Input￿ 22kΩ￿ terminal

0.047µF￿

￿

GND

<Interface circuit inside the unit>

ALARM OUT/MODE OUT Output terminal ￿	CALL OUT output terminal ￿
• Output Circuit	• Output Circuit
Output terminal	CALL OUT terminal
GND terminal	CALL OUT GND terminal
<Interface circuit inside the unit>
	<Interface circuit inside the unit>

Figure 10. Schematics for Input and Output Terminals

SERIES RECORDING

By connecting multiple units in series as shown in Figure 11, when the one unit’s hard disk is full, the next unit automatically begins recording.

In this example, when the first unit’s hard disk is full, the second unit begins recording; when the second unit’s hard disk is full, the first unit begins overwriting its hard disk. If you do not want the first unit to overwrite its hard disk, do not connect MODE OUT from the second unit to REC of the first unit. The series recording function can also be activated by connecting the CALL OUT terminal in place of the MODE OUT terminal; the disk storage capacity setting is made in the Call Out menu. When the CALL OUT terminal is used, if the first unit reaches the preset capacity, experiences a malfunction, or otherwise cannot con- tinue recording, the second unit begins recording.

First Unit

REC POWER ON POWER OFF ALARM-OUT MODE-OUT CALL OUT CALL OUT GND GND

GND

MAX 30mA

DC 5V OUT

Second Unit

GNDCLOCKRECPOWERPOWERALARMMODECALLOUTCALL ADJUSTONOFFOUTOUTOUTGND

GND

GND

Figure 11. Connecting Recorders in Series

14 Pelco Manual C681M-D (2/02)