CRICKET ® POLARITY TEST SET OWNERS MANUAL GA LAX Y AU D I O MAKERS OF THE ORIGINAL HOT SPOT PERSONAL MONITOR
Table of Contents How the Cricket works......................1 Battery Installation.......................3 How to Set Units for Testing.............. 3 How to Test................................4 Cables...............................5 Amps, Mixers, etc....................5 Microphones..........................6 Speakers.............................7 What Does All This Mean?..................9 Polarity............................9 Continuity..........................10 Specifications.......................
I. How the Cricket works A. Send unit: 1. OFF-ON: This switch turns the unit on and off. 2. LO-HI-SPKR: a. LO: b. HI: c: SPKR: Produces balanced low level output on the 1/4" balanced and XLR jacks with pin #1 and sleeve ground, pin #2 and tip positive, and pin #3 and ring negative. Produces balanced hi level output on the 1/4" balanced and XLR jacks with pin #1 and sleeve ground, pin #2 and tip positive, and pin #3 and ring negative.
2: MIC, 2-T, 3-R: a: MIC: b: 2-T: c: 3-R: Connects the LED metering circuit to the microphone located in the back of the unit. If the mic receives a positive pressure, the green LED lights. If the mic receives a negative signal, the red LED lights. Connects the LED metering circuit to pin #2 of the XLR jack and the tip of the 1/4" jack. If pin #2 or tip is positive, the green LED lights. If it is negative the red LED lights.
II. Battery Installation for both Send and Receive units (Use only alkaline batteries) 1. Remove the single phillips head screw from the battery door on the top of the case. 2. Lift up the door and remove it from the case. 3. Locate the battery terminal snap and attach a 9 volt alkaline battery to it. 4. Slide the battery into the clip mounted to the under side of the battery door. 5. Reinstall the battery door to the case, making sure no wires are pinched in the door. 6.
the test and the polarity being checked is that of a speaker connected to the amplifier output. Never use the "HI" position for balanced continuity tests, as continuity fault indications are available only for unbalanced conditions in this position. B. Receive unit: When you first turn the unit on, and after extended use, you should test the battery, using the power switch "BAT" position. A weak battery can cause erratic readings. 1. 2.
B. Cables: 1. 2. Balanced: Connect cable between send and receive units using the balanced jacks. Put the selector switch on the send unit in "LO" position and the "CON/POL" switch on the receive unit in the "CON" position. On the receive unit a properly polarized cable will light the green LED with the front panel switch in the 2-T position and the red LED in the 3-R position. Cable must be tested in both positions.
5. Test the 3-R position; a non-inverted signal from a balanced output will light the red LED. If the output you are testing is unbalanced, a non-inverted signal will not light either LED in the 3-R position. D. Condenser microphones using phantom power: 1. Test the mixer and input and output cables. (See B & C above) 2.
4. 5. signal will light the green LED. Test the 3-R position; a non-inverted signal from a balanced output will light the red LED. If the output is unbalanced, a non-inverted signal will not light either LED in the 3-R position. In a balanced system you need only test the mic in one position, 2-T or 3-R. F. Wireless microphones: 1. Test a cable appropriate for connection to the output of the wireless receiver. (See B above) 2.
3. 4. 5. 6. Set receive unit to "MIC", and the "CON/POL" switch to "POL". Hold the receive unit directly in front of the speaker, 1/2" to 2" away. A speaker that is in proper polarity (positive signal moves cone away from magnet) will light An out of polarity speaker will light the red LED. F. Testing the polarity of flown speakers, or distributed system speakers in permanent installations. 1. 2. 3. 4. Test amplifier as in "C", above.
5. 6. and turn up the receiver's gain until only one LED lights. For rooms with high ceilings, multi-transducer clusters, or highly reverberant conditions, it may be necessary to attach the receive unit to a piece of conduit or broomstick to obtain proper proximity to the source. A speaker that is in proper polarity (positive signal moves cone away from magnet) will light the green LED. An out of polarity speaker will light the red LED. V. What does all this mean? A. Balanced device polarity: 1. 2. 3. 4.
B. Balanced cable fault indications. 1. An intact properly polarized device will light the green LED in the 2-T position and the red LED in the 3-R position. 2. If #1 or sleeve is open or there is a dead short between any two conductors, neither LED will light. 3. If #2 or tip is open, no LED will light in the 2-T position and the red LED will light in the 3-R position if #1/sleeve and #3/ring are intact and properly polarized. 4.
CRICKET POLARITY TEST SET SPECIFICATIONS CRICKET-S Pulse Generator: PULSE WAVEFORM Polarity: positive-going BALANCED LINE OUTPUT PULSE: Switch selectable for hi or low level balanced signal with positive pressure produced at tip of 1/4" jack and pin #2 of XLR jack SPEAKER OUTPUT PULSE: Accepts minimum 2 Ohm load with positive pressure produced at tip of 1/4" speaker jack and positive terminal of internal speaker CASE DIMENSIONS: 3.33"W 1.75"H 5.25"L WEIGHT (with battery): 11 oz.
GA LAX Y AU D I O MAKERS OF THE ORIGINAL HOT SPOT PERSONAL MONITOR GALAXY AUDIO 601 E. Pawnee Wichita, KS 67211 (316) 263-2852 (800) 369-7768 Fax: (316) 263-0642 www.galaxyaudio.com Specifications subject to change without notice.
