Extech Instruments BR90 User manual

USER MANUAL

Compact Borescope

MODEL BR90

Find Quality Products Online at: [e-mail]

www.GlobalTestSupply.com

1

EN-US English

1.1 INTRODUCTION

Thank you for selecting the Extech BR90 Compact Borescope. This device
provides real-time video monitoring and is ideal for inspecting the interior of
pipelines, conduits, and other narrow spaces. The BR90 is useful in the instal­lation of appliances, electronic equipment, fixtures, and is handy for vehicle
troubleshooting and maintenance.

Features

• Waterproof (IP67) 8 mm (0.3 in.) diameter camera with 77 cm (2.5 ft.) flexi­ble goose–neck cable

• 640 x 480 pixel resolution camera with four bright LED lamps and dimmer
function

• Glare-free close-up field of view

• Large 109 mm (4.3 in.) colour TFT monitor

• 180° image rotation and mirror (flip) features

• Adjustable display brightness and 2x digital Zoom

• Video output for real-time viewing on external monitor

• Low battery status indicator

#NAS100023; r. AC/63396/63396; en-GB

Find Quality Products Online at: [e-mail]

www.GlobalTestSupply.com

1

1

Figure 1.1 Product Description

• Single hook accessory

#NAS100023; r. AC/63396/63396; en-GB

2

EN-US English

1.2 PRODUCT DESCRIPTION

1. Video monitor

2. 180° rotation and image mirror (flip) button

3. Monitor brightness adjust button

4. Camera

5. Power ON/OFF indicator

6. Power ON/OFF button

7. Camera LED brightness adjust button

8. Zoom button

9. Video output signal port

Note: Accessories, battery compartment, and camera cable storage are not
pictured in Figure 1. These items are pictured in later sections.

1.3 PACKING LIST

The BR90 package contains the following equipment:

• BR90 Borescope

• User Manual

• 4 x AA batteries

• Soft carry-case

• Magnet accessory

Find Quality Products Online at: [e-mail]

www.GlobalTestSupply.com

1

• Attachment fixture

1.4 OPERATION

1.4.1 Battery Installation

The BR90 is powered by four 1.5V AA batteries. To install the batteries, open
the rear battery compartment using the latches as shown Figure 2 (item 1).
Observe correct polarity when installing batteries. Ensure that the battery
compartment is completely closed before use. The battery status indicator ap­pears on the upper left corner of the video monitor for convenience.

Figure 1.2 Opening tabs for battery compartment (1) and cable storage (2).

Never dispose of used batteries or rechargeable batteries in house­hold waste. As consumers, users are legally required to take used batteries to
appropriate collection sites, the retail store where the batteries were pur­chased, or wherever batteries are sold.

1.4.2 Powering the BR90

To switch the BR90 ON, long press the Power ON/OFF button (top, right) until
the power indicator lamp lights. Long press again to switch OFF.

1.4.3 Accessing the Camera Cable

The camera cable is stored in the BR90 housing. To access the cable, press
the two compartment tabs, as shown in Figure 2 (item 2). Release a length of

EN-US English

• Mirror accessory

Find Quality Products Online at: [e-mail]

#NAS100023; r. AC/63396/63396; en-GB

www.GlobalTestSupply.com

3

1

Figure 1.3 Accessory Installation

Figure 1.4 Accessory Installation continued

EN-US English

cable as required and snap the housing shut. To store the cable after use:
open the housing, coil the cable inside the housing, and snap the housing
closed.

1.4.4 Accessory Installation

Place the single hook (B) or mirror (A) into the hole on the camera lens as in­dicated by the arrow in the diagram below, and then push the attachment fix­ture (C), as shown below, to secure it.

Insert the magnet (E) into the attachment fixture (D), with the pointed end
placed in the hole on the lens as indicated by the arrow in the diagram below,
and then tighten the attachment fixture, as shown, to secure it.

1.4.5 Camera LED Brightness Adjust

When lighting in the area under inspection is inadequate, use the LED Bright­ness Adjust button (middle, right) to adjust the level. Short presses will step
through the available brightness levels.

1.4.6 Monitor Brightness Adjust

Use the LED Brightness Adjust button (top, left) to adjust the level. Short
presses will step through the available brightness levels.

1.4.7 Zoom Function

To zoom the camera image, use the Zoom button (bottom, right). Press once
to zoom 1.5x, press again to zoom 2x, and press again to return to normal
view.

#NAS100023; r. AC/63396/63396; en-GB

4

Find Quality Products Online at: [e-mail]

www.GlobalTestSupply.com

1

EN-US English

1.4.8 180° Image Rotation and Mirror Image Adjust

Press the Image Rotation/Mirror button (bottom, left) to rotate the image 180°.
Press again to flip the image (mirror mode). Press again to return to normal
view mode.

1.5 SAFETY CONSIDERATIONS

1. Do not forcibly bend the camera cable, the minimum bend radius is 25
mm (1 in.); damage to the instrument can result.

2. The camera cable is waterproof (IP67) but the main instrument is not.
Please protect the main instrument from liquid and moisture.

3. Remove the batteries when the BR90 is to be stored for extended periods.

4. Disposal: Do not dispose of this instrument in household waste. The user
is obligated to take end-of-life devices to a designated collection point for
the disposal of electrical and electronic equipment.

1.6 FCC COMPLIANCE

This equipment has been tested and found to comply with the limits for a
Class B digital device, pursuant to part 15 of the FCC Rules. These limits are
designed to provide reasonable protection against harmful interference in a
residential installation. This equipment generates, uses, and can radiate radio
frequency energy and, if not installed and used in accordance with the instruc­tions, may cause harmful interference to radio communications. However,
there is no guarantee that interference will not occur in a particular installation.
If this equipment does cause harmful interference to radio or television recep­tion, which can be determined by turning the equipment off and on, the user is
encouraged to try to correct the interference by one or more of the following
measures:

1. Reorient or relocate the receiving antenna.

2. Increase the separation between the equipment and receiver.

3. Connect the equipment into an outlet on a circuit different from that to which

the receiver is connected.

4. Consult the dealer or an experienced radio/TV technician for help.

This device complies with part 15 of the FCC Rules. Operation is subject to
the following two conditions:

1. This device may not cause harmful interference.

#NAS100023; r. AC/63396/63396; en-GB

Find Quality Products Online at: [e-mail]

www.GlobalTestSupply.com

5

1

WARNING

Changes or modifications not expressly approved by the party responsible for compliance
could void the user’s authority to operate the equipment.

EN-US English

2. This device must accept any interference received, including interference

that may cause undesired operation.

1.7 SPECIFICATIONS

Camera diameter 8 mm (0.3 in.)

Image sensor 1/9”, CMOS

Effective pixels 640 x 480 resolution

Focus distance 3~ 8 cm (1.2 ~ 3.1”) approximately

Horizontal viewing angle 50°

Cable length 77 cm (2.5 ft.)

Cable dimensions 4.4 mm (0.2”) diameter; 77 cm (2.5 ft.)

Cable bend radius 25 mm (1”) minimum

IP rating IP67 waterproof (cable only and excluding

Power supply 4 x 1.5V AA batteries

Display type and dimensions

Image Zoom ratio 1.5x and 2x

Video format NTSC

LED brightness 200 lux (8 cm [3.1”] from camera head to

Power consumption 1.5 Watts, max.

Monitor dimensions 180 x 36 x 89 mm (7.1 x 3.5 x 1.4”)

Operating temperature -10 ~ 50℃ (14 ~ 122℉)

Storage temperature -20 ~ 60℃ (–4 ~ 140℉)

Operating humidity 15% ~ 85% RH

Product weight 325g (11.5 oz.)

length

the cable connection to the main
instrument)

109 mm (4.3”) Color TFT display

object) and 1300 lux (3 cm [2.1”] from cam­era head to object)

#NAS100023; r. AC/63396/63396; en-GB

Find Quality Products Online at: [e-mail]

www.GlobalTestSupply.com

6