Larsen & Brusgaard OPTIMA II Instruction Manual page 2

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Canopy Descent and

Low Speed Warnings Selector

Description

The OPTIMA II includes two types of warning sounds which

can be selected to sound while under canopy descent or

during wing suit ﬂ ight.

1. Canopy Descent and Low Speed Warnings:

Short beeps sound when passing through one, two or three

selectable altitudes during canopy descent or wing suit

ﬂ ight.

2. Guide Tones:

A unique series of guide beeps sound when ﬂ ying from

the 2nd through the 3rd selected Canopy Descent Warning

altitudes.

Setting Canopy Descent and Low Speed Warnings

Note: Minimum selectable height is 100 ft (30 meters)

Note: Default values 1200 ft., 900 ft., and 600 ft. have been

factory preset for Canopy Descent Warning altitudes.

In the Main Display mode, press

to access the Canopy

Descent and Low Speed Warnings Selector.

Warning Bank Menu Functions

The OPTIMA II has 4 canopy descent and low speed warning

banks. When the warning bank icon is ﬂ ashing, press or to

select warning bank 1 to 4.

Setting the Warning Alarm Altitudes

The setting of altitudes in each warning bank can be perfor-

med either on the ground or in the airplane during climb to

jump altitude.

Three Warning Alarms

1. Press

until 1st warning altitude ﬂ ashes

2. Press

to change 1st warning altitude

3. Press

again and the 2nd warning altitude ﬂ ashes

4. Press

to change 2nd warning altitude

5. Press

again and the 3rd warning altitude ﬂ ashes

6. Press

to change 3rd warning altitude

Two Warning Alarms

If you choose, you may have only two warning alarms. The

procedure is the same as above, but choose same altitude for

the two highest warning alarms (the OPTIMA II then sounds

only the 2nd and 3rd warning alarms).

One Warning Alarm

If you wish only one warning alarm, choose same altitude

for all three warning alarms using the above procedure. (The

unit sounds only the 3rd warning alarm).

Sound Pitch

Press

again. The musical note icon and pitch bar graph

will begin to ﬂ ash

Press

to change the pitch up or down. The pitch

bar graph will display the number of bars corresponding to

the selected pitch and the selected pitch will sound.

NOTE: When selecting a pitch on either side of the center vertical

bar (3,800 Hz), the output volume decreases about 5 dB because

the speaker is no longer at its optimum resonance frequency.

Sound Volume

Press

to select output volume.

"1" is very low volume (112 dB), "10" is very high volume

(117 dB)

The OPTIMA II is factory preset to "3".

NOTE: In case of low capacity the volume will automatically

switch to "1" and it cannot be changed until the batteries

have been replaced.

Setting Guide Tones

Explanation:

When Guide Tones are activated, a unique series of beeps

sound between the 2nd and 3rd Canopy Descent Warning

altitudes.

The series of beeps can be compared to an aircraft ILS ap-

proach. The ﬁ rst beep sounds when passing through the 2nd

warning altitude, the next beep 30% into the glide corridor,

then after 55% and so on as depicted in the diagram. The

diagram shows an example where the 2nd warning is set to

1,500 ft and the 3rd warning to 300 ft. A long beep sounds

when passing through the 3rd selected altitude. The steeper

a glide angle the shorter time between beeps.

NOTE: For safety reasons, the minimum selectable swoop height is

100 ft.(30 meter) and the minimum selectable altitude difference

between the 2nd and the 3rd warnings is 300 ft.(90 meters).

To enable Guide Tones

NOTE: Before enabling Guide Tones, the minimum altitude

difference between the 2nd and the 3rd warnings must be 300

ft. (90 meters)

Press

repeatedly until GUIDE ﬂ ashes. Press

until the GUIDE icon is on.

NOTE: When Guide Tones are enabled, the GUIDE icon will show

in the warning bank area of all warning bank displays and in the

Main Display.

To disable Guide Tones

Press

repeatedly until GUIDE ﬂ ashes. Press

until the GUIDE icon is off.

NOTE: When Canopy Descent and Low Speed Warnings are enabled,

the LO SPD icon will show in the warning bank area of all warning

bank displays and in the Main Display. To disable LO SPD, ﬁ rst

disable Guide Tones, then set all warnings to ---

Test Alarm Sounds

Press

again. The "Ear" icon will begin to ﬂ ash. Press

. This causes the OPTIMA to sound the preset alarm

sequence at the selected pitch.

NOTE: When GUIDE is enabled, a series of beeps sound which

simulates a 10m/sec canopy descent and when GUIDE is disabled,

three warning beeps sound

Climb to Altitude Warnings and Clock

Selector

The altitude during climb at which the beep is heard may be

changed or up to three different altitudes during climb may

be selected for beep sounds.

At the lowest preset altitude (factory preset to 1,000 feet),

the OPTIMA II sounds a sequence of beeps. These beeps

have two functions:

1. The beeps indicate that the OPTIMA II has calibrated

itself to the local ground elevation and is ready to jump.

2. The number of beeps indicates the altitude at which the

highest warning alarm is set; for example: If set to 4,500

feet, the signal will sound: beep-beep-beep-beep-(pause)-

beep. The number of rapid-sequence of beeps indicates the

highest warning altitude in thousands of feet. The beep after

a pause (if any), signiﬁ es a 500-foot altitude increment.

Should the battery voltage of the OPTIMA II show low capa-

city, the beep sequence is followed by 5 short beeps. This

indicates that the batteries should be replaced.

NOTE: At the same time the output volume setting is automatically

changed to low volume "1" and it cannot be changed until the

batteries have been replaced.

When the aircraft begins climbing to altitude, the OPTIMA II

displays the current altitude at the top of the display.

Setting Climb to Altitude Warnings

The setting of warning altitudes can be performed either on

the ground or in the airplane during climb to jump altitude.

Three Warning Alarms

1. Press

until 1st warning altitude ﬂ ashes

2. Press

to change 1st warning altitude

3. Press

again and the 2nd warning altitude ﬂ ashes

4. Press

to change 2nd warning altitude

5. Press

again and 3rd warning altitude ﬂ ashes

6. Press

to change 3rd warning altitude

Sequence of Climb Warning Alarm Altitudes

You may note that when setting the warning altitudes, it is

possible to set the 1st warning alarm altitude lower than the

second or even the 3rd warning altitudes. The 2nd warning

altitude could be set to a higher value than the 1st warning

altitude or a lower value than the 3rd warning altitude, and

so on. This is not a problem – when the OPTIMA II exits

ACCESS mode, it will automatically sort and store the war-

ning alarms such that the highest warning altitude become

the 1st warning alarm, the next highest warning altitude

becomes the 2nd warning alarm, and the lowest warning

altitude becomes the 3rd warning alarm.

One or Two Warning Alarms

If you wish only one warning alarm or two alarms, preset the

not used alarm(s) to ---

Time Set Function

Built-in clock

In Main Display mode, press to display the time. The time

is in 24-hour format. The time is displayed for 15 seconds

and then reverts back to the Main Display.

Setting the time:

Perform ACCESS and press

repeatedly until "clock" ﬂ ashes.

Then press

to set the time.

OPERATIONAL CONSIDERATIONS

Prior to Jumping

The OPTIMA II continually adjusts to the local elevation

and displays 0 FT (MT) at the top of the display. If the top

of the display does not show "0" (or your selected altitude

offset) prior to jumping, the unit has not adjusted itself to

the local elevation and it must be manually zeroed. See the

section, "Altitude Offset Function" under Menu functions

above. Even when the display turns OFF, the unit is still

ready for jumping

Setting an Altitude Offset

If the drop zone (DZ) elevation is different from that of the

take-off airport, you may compensate for this difference by

setting an Altitude Offset – see the Altitude Offset menu

function described above.

Battery Status

Full capacity: Symbol shows two black bars inside the bat-

tery icon.

Half capacity: Symbol shows one black bar inside the battery

icon.

Low capacity: Symbol shows no black bars, just an "empty"

battery icon. Batteries should be replaced as soon as pos-

sible. As a reminder, 5 short beeps sound when climbing

through the lowest preset climb altitude. At the same time

the output volume setting is automatically changed to low

volume "1".

Empty batteries: The battery icon ﬂ ashes. Replace batteries

immediately.

Mounting the OPTIMA II

The OPTIMA II can be mounted on the outside of the helmet

or on a Goggle Mount.

Loop the waxed tack cords through the four mounting holes

and fasten with knobs to the helmet/Goggle Mount

NOTE: Make sure that there is no material between the OPTIMA II

loudspeaker hole and your ear.

Resetting the OPTIMA II

Press a paperclip into the tiny hole on the rear side of the

unit and release. The unit restarts.

NOTE: Reset the unit after battery replacement, when troubleshoo-

ting and when verifying software version number.

Air Filter

The OPTIMA II is water resistant.

The Air Filter is the white circular part mounted on the side

of the unit. If it becomes wet (after a splash in the swoop

pond) then let the OPTIMA II dry in a warm place for 48

hours.

NOTE: The Air Filter must be replaced if jumping is resumed quickly

or if the OPTIMA II has been submerged into water.

Air Filter removal tooling kit is an accessory which can be

purchased separately.

OPTIMA II Firmware Version

Perform reset. The version number is displayed at the upper

part of the screen (altitude area). The numbers displayed in

the middle of the screen is a factory reference number.

Battery replacement

Carefully remove screw from battery cover and remove

batteries.

Install new batteries and note polarity.

Use only CR-2325 or equivalent.

NOTE: Reset the OPTIMA II after replacing batteries.

Customer settings are kept in non-volatile memory when

removing batteries. However, the built-in clock may again be

set to the correct time.

Trouble-shooting

When the OPTIMA II detects a fault, an error ("ERR") sign

and trouble shooting number 2 to 4 are displayed in the

upper part of the screen. At the same time the unit beeps

every minute.

The "ERR" trouble shooting codes are as follows:

ERR 2, ERR 3, ERR 4 = unit is defective. Remedy: perform

reset

If the unit does not function correctly even after replacing

batteries and pressing reset, perform following:

Press

and hold while resetting.

The OPTIMA II resets to factory settings and sounds three

beeps.

If the unit is still faulty, please contact your local dealer or

LARSEN & BRUSGAARD.

SPECIFICATIONS

Dimensions: 52 x 40 x 12 mm

(2.16 x 1.57 x 0.47 inches)

Weight: 26 grams (0.9 oz.)

Battery type: 2 x CR 2325 or equivalent

Battery Life Time: 2.5 years or 500 jumps

Freefall alarm sounds:

1st warning:

One 3 second pulsating alarm if vertical airspeed exceeds 13 m/

sec at preset altitude. Sound sequence: Pulsating, low repetition.

2nd warning:

One 4 second pulsating alarm if vertical airspeed exceeds

13 m/sec at preset altitude. Sound sequence: Pulsating, high

repetition.

3rd warning:

Siren alarm as long as vertical airspeed exceeds 13 m/sec at

or below the preset altitude. After deployment the trigger

speed switches to 35 m/sec. Sound sequence: High pitch

continuous siren.

Low Speed alarm sounds:

1st warning: One 0.2 second beep

2nd warning: Two 0.2 second beeps

3rd warning: One 1.3 second beep

Climb to Altitude Warnings: Two 0.2 second beeps

Alarm output volume:

112 dB at maximum pitch

117 dB at minimum pitch

Freefall alarm calibration range: 1,000 to 9,990 feet (30 to

3,330 meters)

Low speed alarm calibration range: 100 to 9,990 feet (90 to

3,330 meters)

Minimum Climb to Altitude setting: 1,000 ft. (300 meters)

Altitude selection interval: 10 feet (10 meters)

Operating altitude: 0 to 40,000 feet

Accuracy: ± 20 feet (+/- 6 meters) at MSL

Operating Temperature Range: -20° C to +50° C (-4° F to

+122° F)

Meets or exceeds EEC/89/336

L&B part no.: 205222

NATO Stock no.: 6605-22-609-1694

Larsen & Brusgaard OPTIMA II Instruction Manual page 2

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