INSTALLATION INSTRUCTIONS RS-232 CARDS IN MRC

INSTALLATION INSTRUCTIONS RS-232 CARDS IN MRC
INSTALLATION INSTRUCTIONS
RS-232 CARDS IN MRC-1600/1620
MRC-1620
Refer to installation section of DSP-6000 manual, Page 2-20 for RS-232 switch
settings.
MRC-1600
1. Remove existing communication cards (subcarrier or telco).
2. Replace with RS-232 cards.
3. Make sure S1 and S2 are set properly for ½ duplex operation as follows:
Unit at studio:
Unit at TX:
a.
All positions on S1: OFF.
b.
S-2 Position 1, 2, and 7: ON.
S-2 position 3, 4, 5 and 6: OFF.
c.
All positions on S2: OFF.
d.
S1 Position 1, 2, 3 and 7: ON.
S1 Position 4, 5, and 6: OFF.
See enclosed drawings:
91C7486
20C3074
Refer to installation section of DSP-6000 manual, page 2-21 for interconnect
cabling instructions.
Note: Make sure that all DSP switches are in the correct positions for the data
rate of the remote control. If switches have been reset with the power on, reset
buttons on the Encoder and Decoder must be depressed so that units are
working properly. These witches are located next to the AC power input on the
rear of the chassis.
2-20 Installation
Remote Control Communication
Most Moseley Remote Control Systems can use the DSP 6000 to convey information
from the Control to Remote Terminal or vice-versa. There are three ways to accomplish
this. The following discussions assume the Remote Terminal and the DSP 6000
Decoder are at the transmitter site and the Control or Command Terminal and DSP 6000
Encoder are at the studio site.
Subcarrier Communications
Normal STL subcarriers can be employed for some combinations of data rates and
efficiencies. Please refer to Section 2.8, Retrofit STL Installation PCL 6020/6030/6060
Receiver, for further details.
FSK Communications
The second method to convey remote control information is to use FSK communications
(the normal TELCO MODEM for Moseley MRC and TCS series products) placed on one
of the AUX channels of the DSP 6000. This of course assumes the AUX channel is
installed and furthermore does not allow that AUX channel to be used for any other
purpose. Be sure the TELCO port is set to 4-wire mode (if applicable). To interface the
MRC (or TCS) to the DSP 6000 for FSK communications, simply connect the TELCO
OUTPUT of the Control Terminal to the DSP 6000 Encoder AUX INPUT and connect the
TELCO INPUT of the Remote Terminal to the DSP 6000 decoder AUX OUTPUT.
RS-232 Communications
The third method to convey remote control information is to use the built-in data port(s)
of the DSP 6000. Because of technology changes over the years, each system is
different and must be configured differently. Be sure to match the cabling, data rates
and formats with the particular system being used. The following chart may be helpful:
System
MRC 1600
MRC 1620
MRC-1
MRC-2
MRC-2S
Data
Rate
300
1200
1200
1200
1200
Data
Bits
8
8
7
7
8
Parity
Even
None
Even
Even
None
Cabling
Figure 2-11
Figure 2-11
Figure 2-13
Figure 2-13
Figure 2-13
For each of these remote control systems, the transmit port and the receive port must be
one and the same. This means some unconventional hardware connections may be
required.
DSP 6000A
7A0700-2 Rev B
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