PhaseNOTE: No damage will result if the Mic-Line switch is set incorrectly.
Input in phase with output. Pin 2 of XLR input in phase withHowever, objectionable distortion may result if line level signals
tip and ring of all Headphones jacks.are monitored with the switch in the Mic position.
Stereo Line�Line? or Aux?level signals only
Power
1
1. Connect a /4-inch stereo connector to either Stereo Line jack.
Internal. . . . . . . . . . . . . . . . . . . . . . . One 9 V alkaline battery
1
2. If loopthrough is desired, use the unused /-in. stereo con-
Battery Life. . . . . . . . . Approximately 15 hours under4
nector as an output.
normal operating conditions
3. Se tthe front panel Stereo Line Pad toh te 0 dBm line?levl seignal
External. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 to 24 Vdc
position. The ?30 dB position is used when the FP22 line?level
Current drain (typical). . . . . . . . . . . . . . . 11 mAdc; 80 mAdc
input signalse + ar4 dBm or greater.
(clipping) at 9 Vdc
NOTE: As explained in the Internal Switches description, the
Temperature RangeFP22 can accept left and right input signals on separate con-
oooo
Operating. . . . . . . . . . . . . . . . . . . 0 to 49C (32 to 120F)nectors. Stereo Line jack (1) is left, Stereo Line jack (2) is
oooo
Storage. . . . . . . . . . . . . . . . . . ?29 to 70C (?20 to 165F)right.
Headphones
Connectors
Loopthrough1. Connect headphones to the Headphones A and B jacks.
1
Two 3-pin balanced XLR-type connectors (one male, one fe-NOTE: Each pair of Headphones jacks consists of one /4-inch
male)and one 3.5 mm stereo connector. Only one connector of
11
Two /4-inch stereo phone jack (tip-left; ring-right; sleeve-each pair can be used at one time. Plugging into the /4-inch
ground)connector disconnects its associated 3.5 mm connector.
HeadphonesOPERATION
1
Two /4-inch stereo phone jack headphone outputsNOTE: A simplified block diagram on the side of the FP22 pro-
Two 3.5 mm stereo mini jacksvides a quick reference to its functional circuitry.
Power1. Rotate the overall Volume control clockwise to power the
6.5 mm coaxial power connector (tip +, sleeve ?)FP22. The Power LED indicator lights to show that the unit is
on. Turn the level control carefully to avoid excessive head-
Case
phone levels. The Volume control adjusts both the Mono XLR
Die-cast zinc; matte black enamel finish
signal and Stereo Line signal.
Overall Dimensions
80.9 mm H x 55.5 mm W x 153 mm DWARNING
(3-3/16 x 2-3/16 x 6-1/16 in.)
The FP22 can produce ear?damaging headphone
Net Weightlevels. Turn the headphones Volume control up
450 grams (1 lb)slowly when making adjustments.
NOTE: The FP22 is lightweight and can be clipped to a belt or
2. Pull out the Volume control knob and rotate clockwise to in-
trousertop, or to D-rings on other equipment. The FP22 belt
crease the volume level of the Mono XLR signal only. This ad-
clip is attached to the case with two easily removable screws.
justment will not affect the overall volume. A center detent posi-
The FP22 will stand on a flat surface, and several units can
tion provides a starting volume level for the Mono XLR signal.
be stacked together with their belt clips removed.
3. Rotate the Balance control left or right to control the overall left/
SETUPright signal balance.
4. If mono monitoring is desirable, set the Stereo/Mono switch to
Battery Replacement
Mono.
1
1. Use a coin or screwdriver to turn the /4-turn lockscrew fasten-
er in either direction to open the battery compartment door.INTERNAL SWITCHES
Two switches are located inside the FP22. These control the
2. Insert a fresh 9?volt alkaline battery (NEDA 1604A, Duracell
signal path through the unit. The switches are located on the ver-
MN1604A, Eveready 522, or equivalent) in the compartment.
tically mounted printed circuit board inside the unit adjacent to
The battery compartment is designed so that the polarized bat-
the Loopthrough phone jacks. To access the switches, remove
tery terminals cannot be inserted incorrectly. Plated spring ter-
minals ensure solid electrical contacts.the three Phillips-head screws on the side panel of the unit.
Internal Switch S-104 consists of two independent single-
External Power
pole, single?throw switches controlling the path of the Mono XLR
The coaxial dc power jack accepts a dc voltage from 12 to 24
input signal:
volts. External dc power feeds a regulator to power the FP22 cir-
cuitry The dc input jack is directly compatible with Shure Model.1. When S104-1 and -2 are in the On position, the Mono XLR sig-
PS20 or PS20E Power Supplies. The tip of the coaxial jack isnal is routed to both left and right earphones.
positive (+), the sleeve is negative (?). A coaxial power plug in-2. When S104-1 is in the On position and S104-2 is in the Off
serted into the external power jack disables the internal batteryposition, the Mono XLR signal goes to the left channel.
power.3. When S104-1 is in the Off position and S104-2 is in the On
position, the Mono XLR signal goes only to the right channel.
Signal Connections
4. If both S104-1 and -2 are in the Off position, NO signal from
Mono XLR�Microphone? or line?level signalsthe Mono XLR input appears at the headphone outputs.
1. Set the Mono XLR Mic-Line switch to the appropriate signalInternal Switch S105 is a two?position slide switch that
level.changes the Stereo Line jacks from Loopthrough TRS stereo in-
2. Connect a balanced microphone or line level signal to eitherputs to separate left and right mono inputs.
Mono XLR jack.1. When internal switch S105 is set for stereo, the Stereo Line jacks
3. If loopthrough is desired, use the unused XLR connector as anaccept a stereo signal on a single 1/4-inch stereo connector (tip-
output.left; ring-right; sleeve-ground). This allows for a loopthrough of a
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ACEC
