JENSEN JHD910 2 Channel Amplified Audio Digital AM FM Tuner Owner’s Manual

: June 16, 2024
: Jensen

Table of Contents

JENSEN JHD910 2 Channel Amplified Audio Digital AM FM Tuner
Features
Package Contents
Installation
Wiring
Basic Operation
Tuner Operation
Weather Band Operation
Troubleshooting
Specifications
References
Read User Manual Online (PDF format)
Download This Manual (PDF format)

JENSEN JHD910 2 Channel Amplified Audio Digital AM FM Tuner

Thank You!
Thank you for choosing a Jensen product. We hope you will find the instructions in this owner’s manual clear and easy to follow. If you take a few minutes to look through it, you’ll learn how to use all the features of your new Jensen receiver for maximum enjoyment.

Features

Features of the Jensen JHD910 mobile audio system include:

Waterproof
UV and Corrosion-resistant
Electronic US/Euro AM/FM Tuner
30 Programmable Presets (12 AM, 18 FM)
Non-volatile memory for User Settings and Preset Memories
7-Channel NOAA Weather Band
Weather Alert
Auxiliary Audio Input
Headphone Output
2-Channel Amplified Audio Output
Backlit Controls with Selectable Illumination Color
Daylight Readable Display
Clock with 30-day Backup Power
Work Timer
Audible Beep confirmation tone

Package Contents

JHD910 Radio
Radio Mounting Bracket
Headphone Mounting Bracket
Five (5) 10-16 x 3/4” Stainless Steel PPH Screws
Five (5) 10-32 x 5/8” Stainless Steel PPH Screws
Five (5) 10-32 Stainless Steel Hex Nuts
Five (5) #10 Stainless Steel Washers
Four (4) M4 x .7 x 8MM Stainless Steel Hex Screws with Captivated Washers
Wiring Harness
Auxiliary Input Patch Cord
Owner’s Manual

Installation

Mounting the Bracket

Two options are provided for mounting the bracket (self-tapping screws or machine screws with nuts) to ensure a mounting option ideal for your mounting location. Avoid obstructing airflow to the rear cooling fins on the radio.

Note: Mounting holes should be drilled to 7/32”. Before drilling the mounting holes, make sure the area behind the panel where the holes are desired is clear of wires and fuel, vacuum and or brake lines.

Attaching the Radio
Once the bracket is securely mounted, use the four included M4 machine screws to fasten the bracket to the back of the radio. Alternately, the radio can be mounted directly to the instrument panel if access to the rear of the instrument panel is available.

CAUTION! Do not over tighten the 4 mounting screws. Hand tighten only.

Mounting the Headphone Bracket
Three options are provided for mounting the bracket (self-tapping screws, machine screws with nuts or double-sided tape) to ensure a mounting option ideal for your mounting location. Alternatively, the headphones can be mounted directly to the instrument panel if access to the rear of the instrument panel is available.

Note: Mounting holes should be drilled to 7/32”. Before drilling the mounting holes, make sure the area behind the panel where the holes are desired is clear of wires and fuel, vacuum and or brake lines.

Mounting Stack

Wiring

The wiring diagram depicts all the wiring connections required for the proper operation of the unit.

Basic Operation

Power
Press the power button (1) momentarily to turn the unit on or off. This button is also used to access the version number of the software. To briefly display the software version on the LCD, press and hold the power button for more than five seconds.

Mute
Press MUTE (2) to silence the audio output in the tuner, weather band or auxiliary input mode. When the audio output is silenced, “MUTE” will appear in the display. If the mute feature is activated when the unit is turned off, the volume will default to the programmed turn-on level when the unit is turned back on.

Display
Press DISP (3) momentarily to toggle the LCD between function mode (showing tuner, auxiliary input or weather band information, depending on which mode is currently activated) and clock mode (showing the time).

Liquid Crystal Display
The Liquid Crystal Display (LCD) panel (4) displays the frequency, time and activated functions.

Auxiliary Input Function

To connect a portable audio device (MP3 player, iPOD, etc.) to the JHD910, connect the headphone or line level output of the device to the 1/8″ auxiliary input jack of the JHD910 (5b) using the audio patch cord (included). Pres AUX (5a) to select auxiliary input mode.

Timer
Press TIMER (6) momentarily to directly access timer mode. Briefly press TIMER to start the timer function, and the “TIMER” icon will flash in the display. Press TIMER again to stop the timer, and the “TIMER” icon will remain in the display (without flashing). Press the button again briefly to resume the timer, or press and hold it for three seconds to reset it to zero and to remove the “Timer” icon from the display.

Volume
Briefly press VOL+ (7a) or VOL- (7b) to adjust the volume up or down one step. Press and hold VOL+ or VOL- for more than one second to continuously adjust the volume level until the button is released. The current volume level (0 to 40) will appear in the display when the volume is adjusted, returning to the default display three seconds after the adjustment is complete.

Setting the Clock
To set the clock to display the current time, press DISP for more than three seconds to enter clock setting mode, and the time will flash in the display. Press TUN- (8a) to adjust the hours or TUN+ (8b) to adjust the minutes. When no adjustment is made for ten seconds, the time will be set and normal operation will resume.

Audio and Menu Adjustment

Audio Adjustment
Press AUDIO/MENU (9) momentarily to step through the following audio adjustment options: Bass, Treble and Balance (left to right). When the desired option appears in the display, press VOL+ (7a) or VOL- (7b) to adjust that audio feature. When no adjustments have been made for three seconds, the unit will resume normal operation.

Menu Adjustment
Press AUDIO/MENU for more than three seconds to enter menu adjustment mode and adjust any of the menu options: When the desired option appears in the display, press VOL+ or VOL- to adjust that menu option. When no adjustments have been made for three seconds, the unit will resume normal operation. The following menu options may be adjusted using this feature:

Beep Confirm (On or Off) – Determines if a beep will be heard each time a button is pressed.
Operation Region (USA or Euro) – Select the appropriate operating region.
Clock Display (12 or 24) – Select a 12-hour or 24-hour clock display.
Display Brightness (Low, Mid or High) – Determines the brightness level of the display.
Backlight Color (Amber or Green) – Determines the backlight colour of the unit.
P-VOL [Power on Volume] (On or Off) – Determines if preset Turn On Volume will be set.
Turn On Volume (0-40) – Select the desired volume level for the unit to assume when turned on.
WB Alert (On or Off) – Determines if the weather band alert feature is activated.
Default – Select to return to factory default settings.

NOTE: The underlined option denotes the default setting.

Tuner Operation

Select a Band
Press AM/FM (10) momentarily to directly access tuner mode from any other function mode. When the unit is already in tuner mode, briefly press AM/FM to change between two AM bands (AM1 and AM2) and three FM bands (FM1, FM2 and FM3).

Note: If the unit is programmed for European operation, the sequence will be MW1, MW2, FM1, FM2 and FM3.

Manual Tuning
Press TUN- (11a) or TUN+ (11b) momentarily to tune the frequency one step higher or lower. Press and hold TUN+ or TUN- for more than one second to tune continuously in the selected direction until the button is released.

Seek Tuning
Press SEEK- (12a) or SEEK+ (12b) momentarily to automatically tune the frequency down or up to the next strong station.

Preset Stations

Six numbered preset buttons (13) store and recall stations for each AM and FM band. To store a station, select a band (if needed), then select a station. Hold a preset button for three seconds. The current station will be stored, and the corresponding preset number will appear on the display. To recall a station, select a band (if needed). Press a preset button momentarily, and the unit will tune to the corresponding stored station.

Note: Preset buttons recall channels 1-6 on the weather band and cannot be set by the user.

Weather Band Operation

Accessing the Weather Band
Press WB (14) to directly access the weather band mode from any other function mode.

What is the NOAA Weather Radio?
This is a nationwide system that broadcasts local weather emergency information 24 hours a day. The U.S. network has more than 530 stations covering the 50 states as well as the adjacent costal waters, Puerto Rico, the U.S. Virgin Islands and the U.S. Pacific Territories. Each local area has its transmitting station and there are a total of seven broadcasting frequencies used: 162.400MHz (CH1), 162.425MHz (CH2), 162.450MHz (CH3), 162.475MHz (CH4), 162.500MHz (CH5), 162.525MHz (CH6) and 162.550MHz (CH7).

How many stations can I expect to receive?
Since the broadcasts are local weather and information, the transmission power is usually very low (much less than AM or FM stations) so you will usually receive only one station unless you are on the edge of two or more broadcast signals. The most you will receive will be two or three, and that is rare.

Is it possible I won’t receive any stations?
Depending on location, you may receive a very weak signal or none at all. Also, similar to AM and FM signals, weather band signals are subject to surrounding conditions, weather, obstructions of the signal by hills or mountains, etc. If no NOAA signals are found/received, the “NO SIG” icon will flash in the display and the tuner will scan all seven NOAA frequencies every 30 seconds.

How will I know I am tuned to the weather band?
When you select the weather band, the “WB” icon will appear on the display panel, along with the current channel indication. Press TUN+ or TUN- to tune to each of the seven channels until you find the weather band station broadcasting in your area.

NOAA Weather Alert
The Weather Alert function adds level of user safety by automatically switching from the current function mode to weather band mode for a minimum of 60 seconds if a NOAA warning tone (1050 Hz) is received/detected. If no additional warning tone is received for 60 seconds, the unit will switch back to the last known function mode. The Weather Alert function can be turned “on” or “off” by the Audio/Menu key, as described on page three. When “ON” (default), the Weather Alert icon appears in the display and the weather tuner remains active, even when the radio is turned off (as long as the power is still applied to the radio). If a weather alert is issued, the radio will turn on and play the announcement. for 60 seconds, then turn back off and revert to weather alert monitor mode. If the Weather Alert function is set to “OFF”, no Weather Alert icon appears in the display. The radio will not respond to any weather alerts when it is off and will not automatically switch to the weather band if an alert is issued.

Note: If the unit is programmed for European operation, the WB function will be disabled.

Troubleshooting

Note: Proper care and cleaning is essential to optimal operation. The JHD910 may be cleaned with mild detergent/water mixture and a soft cloth to remove grease and grime. Do not pressure wash directly on the radio.

Specifications

General

Power Supply Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . DC 12 Volts, Negative Ground
Chassis Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 131.6 (W) x 47.5 (D) x 86 (H)
Loading Impedance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 -8 ohms per channel
Tone Controls . . . . . . . . . . . . . . . . . . . . . . . . Bass (at 100 Hz), ±10 dB; Treble (at 10 kHz), ±10 dB
Current Drain . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.5 Ampere (max)

FM Tuner

Tuning range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .87.5-108.0
FM mono sensitivity. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1.5uV
Stereo separation @ 1 kHz . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . >25dB

AM Tuner

Tuning range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .522-1710
Sensitivity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . <30uV

Weather Band

Sensitivity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . <1uV

Amplifier

Total system power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 Watts Maximum
Signal to Noise . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . >70dB

Specifications subject to change without notice.

Note: The manufacturer is not responsible for any radio or TV interference caused by unauthorized modifications to this equipment. Such modifications could void the User’s authority to operate the equipment.

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

This device may not cause harmful interference, and
This device must accept any interference received, including interference that may cause undesired operation.