Installing; Power Source; Connecting Land-Lines; Hybrid Balance - Solidyne HL 202 Manual De Usuario

ENGLISH

2 INSTALLING

2.1 Power source

The unit is connected directly to the AC outlet, using a standard 3-prong power plug (AC-0106 type)
provided with the unit. At the rear panel, there is a 220/110 V switch, which must be manually settled
to the correspondent position. The unit have an on/off switch.

2.2 Connecting land-lines

On rear panel (see Fig.1) there are two pairs of connectors RJ-11 type (Line-1, Line-2), where the
pone lines and their correspondent telephones sets are connected.
The telephone set operates normally while the phone lines aren't taken by the hybrid (position OFF).
The lines can be connected directly to the public phone lines or the PBX of radio station. The private
lines deteriorate hybrid rejection, therefore, we recommend connecting the console to public lines
directly. The hybrid have internal filters for RF rejection effective in AM, FM and UHF bands. Usually
you don't need to add additional filters.

2.2.1 HYBRID BALANCE

Balance is adjusted when the local audio from Studios returns from hybrid too high, 'dirtying' the
voice on-air. This non-desired effect is produced because some part of the signal sent to the
telephone line returns through the hybrid circuit, and mixes with the original signal.
The hybrid's balance adjusts in factory using standard impedances, but you must adjust it to the
impedance of local line. Proceed as following.
On rear panel, the unit has two rotating presets of 15 turns (BAL), one for each line.
•
• Using the correspondent telephone set, make a call to an external number (don't use
extensions of private central)
• Use a microphone (connected to the console) to send audio to the pone line.
• Send the microphone signal to the hybrid (e.g.: using the SEND bus). If your console allows
it, assign the output of hybrid and the headphones to an independent bus (AUD) to don't
interrupt the on-air program while this adjustment. If console do not allows this, connect the
headphones directly to the balanced output of the hybrid.
Turns the BAL preset until reach the minimum level on headphones.
•
Proceed in the same way with the others lines.
CHECK THE SWITCH 110/220V BEFORE PLUG TO THE AC
OUTLET.
Fig.1 - HL-202, panel trasero, sección conectores
HL202 and 203-VQ have protection with SIOV varistors against voltage overshoots
caused by ligthnings; is recommended to install an external surge suppressor for
each phone line.
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TELEPHONE HYBRIDS HL202 & 203VQ