Electro-Harmonix Pitch Fork Instruction Manual

WARNING: Your PITCH FORK comes equipped with an Electro-Harmonix 9.6DC-200BI power

supply (same as used by Boss® & Ibanez®: 9.6 Volts DC 200mA). The PITCH FORK requires
30mA at 9VDC with a center negative plug or runs off a 9Volt battery. Using the wrong adaptor
or a plug with the wrong polarity may damage your PITCH FORK and void the warranty.

D

m2

M2

M3

P4

P5

M6

m7 1 2

3

Detune

Minor

2nd

Major

2nd

Major

3rd

Perfect

4th

Perfect

5th

Major

6th

Minor

7th

1

Oct 2 Oct

3

Oct

D

m2

M2

M3

P4

P5

M6

m7 1 2

3

Detune

Deep

Detune

M2

up

+

M6

up

M3

up

+
P5
up

P4
up

+

P5

down

P5
up

+
1 Oct
down

M6

up

+

P5

down

m7

up

+

M6

up

1 Oct

up

+
1 Oct
down

2 Oct

up

+
1 Oct
down

3 Oct

up

+
1 Oct
down

Pitch Fork

POLYPHONIC PITCH-SHIFTER/HARMONY PEDAL

Congratulations on your purchase of the Electro-Harmonix Pitch Fork, a compact,
battery powered, polyphonic pitch-shifter/harmony pedal. The Pitch Fork transposes
the pitch of your instrument over a range of up to +/- 3 octaves. Three different
available pitch-shifting modes allow the pitch to be transposed up, down or both
simultaneously in Dual mode. The pitch shift amount can be set to a fixed interval or
continuously varied by an expression pedal or control voltage. The Pitch Fork’s
footswitch features two different modes of operation: Latch and Momentary.
Momentary allows rapid toggling between effect and bypass for quick blasts of pitch
bending. The BLEND knob is a wet/dry control allowing you to create the perfect mix
of your dry and transposed signals.

GETTING STARTED

Connect the output plug of the supplied power adaptor to the 9V power jack. Plug
your instrument into the INPUT jack; connect your amp to the OUTPUT jack. Set the
toggle switch to UP arrow and press the LATCH button so it is down. Turn BLEND
fully clockwise and set SHIFT to 1, as in 1 octave up. Press the footswitch until the
LED lights up. You will hear all your notes shifted up 1 octave. Connect an optional
expression pedal to continuously vary the pitch from unity up to 1 octave.

Press the LATCH button so it is up. The footswitch now has a momentary action:
when pressed the effect activates and pitch is shifted; when released, the effect is
bypassed. Connect an expression pedal to control glissando rate of the momentary
footswitch. If the EXP jack is vacant, pitch will change at the default glissando rate of
60ms (this is user adjustable).

BLEND KNOB

The BLEND knob mixes between the untreated, analog dry signal and the effected
signal. At BLEND’s full clockwise position, the output is 100% wet.

SHIFT KNOB

The SHIFT knob selects the maximum interval of chromatic transposition. The chart
below shows how the pitch will be shifted relative to the original pitch.

MODE TOGGLE SWITCH

The MODE toggle switch selects whether the pitch is shifted up, down or both
simultaneously relative to the root. Dual mode outputs two pitch-shifted signals. One
of the shifted signals follows the SHIFT knob as if in UP mode. The other shifted
signal creates a musically useful harmony according to the SHIFT knob setting.

DUAL mode SHIFT knob Settings:

LATCH BUTTON

The LATCH button selects Latch or Momentary mode. This affects how the footswitch
and EXP jack input behave. When the LATCH button is down, Latch mode is enabled.
The footswitch toggles between effect and bypass each time you press and release
the footswitch; the EXP input continuously varies pitch. When the LATCH button is in
the up position, Momentary mode is selected. The effect is only on while the
footswitch is held down, otherwise the Pitch Fork is bypassed; the EXP input varies
the glissando rate of the momentary footswitch.

BYPASS FOOTSWITCH & STATUS LED

The footswitch toggles between effect on and buffered bypass. In Latch mode, each
press and release of the footswitch toggles between effect and bypass modes. In
Momentary mode, when the footswitch is held down, the effect is on, when the
footswitch is released, the Pitch Fork enters bypass. The status LED lights when in
Effect mode.

EXP JACK

EXPression input jack accepts a TRS expression pedal connector or a Tip-Sleeve 0-5V
control voltage input. The expression pedal should ideally use a 10k potentiometer
with linear rather than audio taper. It must have the wiper connected to TIP and toe­down connected to RING. Pedals made by some manufacturers do not conform to

this convention, and would need a special cable to swap RING and TIP. Some

suggested Expression Pedals: EHX Expression Pedal, M-Audio® EX-P, Moog® EP-2 &
EP-3, Roland® EV-5 or Boss® FV-500L.

 LATCH MODE - the Expression/CV input controls pitch shift amount,

ranging from unity, or no pitch shift, in the heel position to the interval set
by the SHIFT knob for the toe position. Pitch varies continuously from heel
to toe in all settings.

 MOMENTARY MODE - the Expression/CV input controls glissando rate for

the Pitch Fork’s footswitch. When the bypass footswitch is pressed, the Pitch
Fork jumps from bypass to the pitch shift interval set by the SHIFT knob.
The amount of time it takes to reach the SHIFT knob’s interval setting is the
glissando rate. When the footswitch is released, pitch will return to unity by
the same rate. When your expression pedal is heel-down the rate is 4ms, in

toe-down the rate is 2sec. When no device is plugged into the EXP input the
default glissando rate is 60ms.

SAVING NEW GLISSANDO RATE SETTING FOR PITCH FORK FOOTSWITCH

1) Set LATCH mode button to the Momentary or up position.

2) Connect expression pedal or CV device to EXP jack.

3) Press and release Pitch Fork’s footswitch while adjusting expression pedal or CV

device until you hear desired glissando rate. Leave external device in current
setting.

4) Press and hold down the Pitch Fork’s footswitch.

5) Press LATCH button so it changes to Latch mode. LED flashes to confirm.

6) Release the footswitch.

7) The new glissando rate is now saved. Remove plug inserted into EXP jack,

change back to Momentary mode and use footswitch to confirm new rate.

RESTORING FACTORY DEFAULT FOR GLISSANDO RATE

1) Make sure nothing is plugged into EXP jack.

2) Set LATCH button to Latch mode, the down position.

3) Press footswitch so that Pitch Fork is in Bypass.

4) Press and hold down the Pitch Fork’s footswitch.

5) Press LATCH button so it changes to Momentary mode. LED flashes to confirm.

6) Release the footswitch.

OUTPUT JACK

Outputs the wet/dry mix set by the BLEND knob.

CHANGING BETWEEN LATCH AND MOMENTARY WHEN EXPRESSION PEDAL
IS CONNECTED

When in Latch mode and you switch to Momentary mode the expression pedal
position is ignored. The stored glissando rate will take precedence until the
expression pedal is moved from current position.

LED ON STARTUP

The LED will blink 4 times then hold on the 5th if in latch mode or toggle off if in
momentary. This happens when AC power is applied or you plug into the input jack
with a fresh battery installed. If battery power is too low, the LED blinks dimly, every
other second.

CHANGING THE BATTERY

To change the 9-volt battery, you must remove the 4 screws on the bottom of the
Pitch Fork. Once the screws are removed, you can take off the bottom plate and
change the battery. Please do not touch the circuit board while the bottom plate is off
or you risk damaging a component. To extend battery life, disconnect the INPUT jack
when the Pitch Fork is not in use.

NOTES AND SPECIFICATIONS

 PITCH FORK has high quality buffered bypass.
 Input impedance is 2.2M.
 Output impedance is 680.
 Current draw of the PITCH FORK is 30mA.

- WARRANTY INFORMATION -

Please register online at http://www.ehx.com/product-registration or complete and
return the enclosed warranty card within 10 days of purchase. Electro-Harmonix will
repair or replace, at its discretion, a product that fails to operate due to defects in
materials or workmanship for a period of one year from date of purchase. This
applies only to original purchasers who have bought their product from an authorized
Electro-Harmonix retailer. Repaired or replaced units will then be warranted for the
unexpired portion of the original warranty term. If you should need to return your
unit for service within the warranty period, please contact EHX Customer Service at
718-937-8300 or [e-mail] for a Return Authorization Number. Along with your
pedal, please include a brief description of the problem as well as your name,
address, telephone number, copy of your receipt, and a check or money order.

United States - $12 Ship to:
Canada - $15 Electro-Harmonix
Europe and outside countries - $25 C/O New Sensor Corporation

55-01 2nd Street
Long Island City, NY, 11101

Please make checks/money orders payable to New Sensor Corporation.
To hear demos on all EHX pedals visit us on the web at www.ehx.com
Email us at [e-mail]

Attn: Service Department

- FCC COMPLIANCE -

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, and (2) this device must accept
any interference received, including interference that may cause undesired operation. If the
device is not installed and used in accordance with the instructions, it may cause harmful
interference to radio communications and void the user's authority to guarantee the equipment.

Note:

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:



Reorient or relocate the receiving antenna.



Increase the separation between the equipment and receiver.



Connect the equipment into an outlet on a circuit different from that to which the
receiver is connected.



Modifications not expressly approved by the manufacturer could void the user's authority to
operate the equipment under FCC rules.

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