Siel EXC-GT Series, Руководство пользователя и по обслуживанию

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EXC-GT – FM super-compact transmitter series
User’s manual – Page 18 of 98
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The MPX connector is internally connected in parallel to the RIGHT connector. As such, if the MPX connector is in
use, the simultaneous connection of signals to the LEFT and RIGHT connectors is not possible. Again in this case, the
highest impedance position is 5 KOhm.
Connection to the auxiliary RDS/SCA modulation signal is described further ahead, in section 6.4.d.
6.4.c Wiring into the mains
1) Verify that the rear power switch is turned off; if it is not off, do so now.
2) Ground the system.
3) According to your model, connect the power cable or the device’s cable to a suitable single-phase input (230V
AC
nominal
voltage).
,
Before connecting the power, ensure that it is appropriate and is able to support the consumption required by the
transmitter model you intend to use.
,
The power supplied by the mains input must satisfy the requirements outlined in section 6.3.c.
,
Your transmitter should not be used when near the lower voltage limit with high-impedance lines: if the line voltage
falls below a certain limit at full load, the low voltage sensor circuit could trigger a continuous, extremely dangerous
on/off cycle. In such case, install an external voltage stabilizer.
,
In order to ensure proper operation and comply with safety regulations, proper grounding is required. Use the
yellow/green lead in the power cable. The cable neutral lead is blue. Never connect the earth to the mains neutral lead.
,
Use only the power supply cable supplied with the transmitter. For cable extensions, sections of sufficient and
appropriate length are recommended.
,
Never turn the device on without an antenna connection, even when in stand-by.
6.4.d Connection to the auxiliary modulation (optional)
Where necessary, an auxiliary RDS or SCA modulation source can be connected to the AUX input [16]; refer to the instructions
outlined in Chap. 7.
6.4.e Parallel port for remote control (optional)
Where necessary, connections can be made to the REMOTE parallel port [19]. Various lines are located in this port for simple, direct
control of the transmitter via a male DB9 connector.
Connection of the pins is outlined in the following table:
N. Connection Notes
1, 5, and
8 ground
2 “on the air” signal + 12V with 10 KOhm indicates that the transmitter provides considerable RF power, but not
necessarily the correct level
3 direct power A signal proportional to the direct power is present and is of a pseudo-quadratic type proportion.
The variation field ranges between 0-5Vdc with an impedance of 1 KOhm. On the 1 KW 5V model,
this equals 1500W
6 disable RF This line’s grounding deactivates the RF output. The maximum signal level is approxi
10V/1mA
7 alarm A low logic signal indicates an alarm. Normal function is indicated by the presence of + 12V on
10kohm. The maximum absorption capacity for the external current is limited to 10mA
6.4.f Connection to the RS232 port (optional)
Where necessary, connections can be made to the RS232 port [18]. This port manages Tx, Rx, and related return data signals via a
RS232 standard without any “handshake” signal.
The above signals are inversely connected to the port; as such, a simple pin-to-pin type serial cable is sufficient, directly connected