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IMPORTANT SAFETY INSTRUCTIONS Read these instructions. Keep this instruction. Heed all warnings. Follow all instructions. Do not use this apparatus near water. Clean only with dry cloth. Do not block any ventilation openings. Install in accordance with manufacturer instructions. Do not install near any heat sources such as radiators, heat registers, stoves or other apparatus (including amplifiers) that produce heat.
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10. Protect the power cord from being walked on or pinched particularly at plugs, convenience receptacles, and the power where they exit from the apparatus. 11. Only use attachments/accessories specified by the manufacturer. 12. Use only with the cart, stand, tripod, bracket, or table specified by the manufacturer, or sold with the apparatus.
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This installation should be made by a qualified service person and conform to all local codes. Bosch Security Systems will not be responsible for injuries or damages resulting from the improper installation or use of any camera sold by Bosch Security Systems, their agents, distributors or dealers.
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PSU box. 3) Contact a Bosch Service Center for further advice.
A voltage regulator circuit automatically allows for 12VDC or 24VAC operation without any wiring changes. Its wider voltage range also provides protection from voltage surge, transient spikes, and reverse voltage. The EX27 is available in several models to meet individual requirements or specific needs.
Inspect the equipment thoroughly to ensure nothing was damaged in transit. Contact a Bosch Service Center if a problem is noted, see the rear page of this booklet for contact numbers.
5. INITIAL PREPARATIONS Determine the operating voltage at the installation site. All cameras have been tested prior to shipment. Select a suitable location that is protected from accidental damage, tampering, and environmental conditions exceeding the camera’s specifications. Caution: The selected mounting location should not place the camera in a situation where its environmental specifications could be exceeded.
6. GUIDELINES The following installation guidelines must be followed: Locate the camera such that it cannot be easily interfered with, either intentionally or accidentally. Select a mounting surface capable of supporting the combined weight of the camera and mounting hardware under all expected conditions of vibration and temperature.
7. VOLTAGE INPUT The camera unit is pre-connected with an electrically isolated power board for 24VAC or 12VDC operation with no wiring change or wiring polarity. See figure 7-1 for wiring details. Note: Input voltage is 10.5VDC to 40VDC for DC input.
8. CAMERA AND LENS ACCESS The following steps show the installer how to access the camera board and the camera lens. Step 2.1 - Remove the four cap screws with a 3mm Allen key. See Figure 8-1 on page 15. Step 2.2 - Carefully slide out the rear housing from the main enclosure.
To increase the night switching sensitivity turn the dial clockwise, to increase the day switching sensitivity turn the dial counter-clockwise. For EX27N versions refer to figure 9-1. For EX27 and EX27D refer to figure 9-2. Power to Photocell...
The adjustment marked T ←→ W is for image zoom. The adjustment marked N ←→ ∞ is for image focus. Re-tighten the setscrews after focus adjustments have been completed. FIGURE 10 – 1 EX27 Vari-focal Lens Focus Adjustment...
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Use a Neutral Density filter or an Infra-Red Pass filter to cover the lens during focusing to simulate low light conditions on scene for correct 24-hour focusing. For vari- focal lenses, the camera should be focused with the lens iris fully opened to simulate the worst possible depth of field.
11. OSD MENU SYSTEM 1. Follow the instructions in Section 8 to access the OSD controls. 2. Enter the OSD menu by pressing the joystick button; to navigate through the menu use up, down, left and right. 3. Follow the instructions below to make camera adjustments.
12. TROUBLESHOOTING GUIDE PROBLEM POSSIBLE LIKELY CAUSE SOLUTION No Video 1. Power Supply: -Connections…. Check input power connections at the cable leads. Check for loose wires. -Voltage Range... If connected to DC, check voltage input range of 10.5 - 40 V. If connected to AC, check input voltage range of 12 –...
If still no video, connect the camera directly to the monitor. Check the video signal. If okay, the problem is with the interconnections. If still no video, a Bosch contact Service Center. See rear page of this manual for contact information. _________________...
Poor Picture Quality Snowy Noisy Power Check connections. Image Supply Relocate or replace (cont’d.) power supply. Horizontal Ground Looping on Check the coax cable Scan Lines, video cable shield is not touching Rolling Up ground, e.g. at or Down couplings. An electrically isolated circuit board or isolation...