TELEPHONE HYBRID-2 USER MANUAL
Dear Customer, Thank you for choosing the Telephone Hybrid-2. This time you are not faced with a huge manual because it is simply not necessary because of the natural recognition of all functions on the user interface. All functions are self-explanatory and you will certainly appreciate the ergonomics of this design. We are confident that you will be using the Telephone Hybrid for many years to come, and wish you a lot of success with your operation.
D&R’s newest Telephone Hybrid-2 is the active version of the well known passive one, successfully sold over the last 5 years. Its concept originates from many demands for a more sophisticated hybrid with more features. The Telephone Hybrid-2 is an analogue unit with digital control and features like ducking making intelligibility a lot better in broadcast.. What is a telephone hybrid? Telephone hybrids provide the interface between professional audio equipment and the public telephone network.
Back panel lay-out Power Power Cord LINE: PHONE: C-BALANCE: R-BALANCE GPI AUDIO + GPIO RECEIVE SEND mains power switch. The unit is powered by a removable IEC type power cord. An internal switch is provided for 115/230V selection. RJ-12 connector to connect with the public telephone network. RJ-12 connector to connect with a handset. 8 pole mini-dip switch to select the optimum side tone attenuation. Internal potentiometer to adjust for optimum side tone attenuation. Jack connector for remote control.
SETTING UP PROCEDURE Connect the two wires of the telephone line’s wall unit to the RJ-11 connector labeled LINE and connect the telephone appliance itself to the Hybrid’s RJ-11 connector labeled PHONE. Note that to originate calls, a local phone must be connected to the system. Now the hybrid is interfaced (fully balanced) between your telephone appliance and its connection to the outside world. The hybrid can now split the send and return signals.
DUCKING The Hybrid has an automatic gain adjustment of the incoming signal from the caller when the presenter speaks. This feature both improves the side tone reduction and gives the presenter a level advantage over the caller when he interrupts the caller. When both parties are speaking the caller’s signal is reduced then.
GPI GPI Tip Ring Sleeve FUNCTION Pull down Pull up No CONNECTION 47 ohm to ground +5 volt via 10kohm Not connected FUNCTION n.c. A (telephone line) B (telephone line) n.c. CONNECTION FUNCTION n.c. A (telephone line) B (telephone line) n.c.
RECEIVE Impedance Common mode rejection Maximum output level Nominal output level Bandwidth to telephone line Telephone line impedance Telephone line impedance range Connectors Gain range send control GENERAL Distortion Power supply Power consumption Dimensions Weight < 50 Ohm, electronically balanced >40dB +26dBu +4 dBu 250Hz – 4kHz, -3dB ref 1 kHz Nominally 600 ohm 300 ohm to 1500 ohm XLR type 3 pin male +6dB to –20dB Less than 0.
DECLARATION OF CONFORMITY Manufacturers Name: D&R Electronica Weesp b.v.
PRODUCT SAFETY This product is manufactured with the highest standards and is double checked in our quality control department for reliability in the "HIGH VOLTAGE" section. CAUTION Never remove any panels, or open this equipment. No user serviceable parts inside. Equipment power supply must be grounded at all times. Only use this product as described, in user manual or brochure. Do not operate this equipment in high humidity or expose it to water or other liquids.
Current will flow when there is a difference in ground potential between equipment on stage and in the P.A. system. Please do check if there is any potential between the housing of the mikes and the guitar synth amps, which will be linked by your body on stage. Imagine, a guitar in your hand and your lips close to the mike! A ground potential difference of above 10 volts is not unusual, in improperly wired buildings it can possibly be as high as 240 volts.
. TELEPHONE HYBRID-2 SERVICE MANUAL Manual page 12
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