8
English
12 dB and 18 dB Output Pads
Each DFR22 output has a 12 dB pad and an 18 dB pad that can be
engaged through the software interface. Use these pads when con-
necting the DFR22 to lower-level inputs. They cannot be used to pre-
vent clipping at the output stage of the DFR22
NOTE:
The Output meters indicate the signal level present at the
digital-to-analog converters. The 12 and 18 dB pads act upon the
signal after the digital-to-analog converters, so the meters do not
reflect the pads.
COMPUTER CONNECTIONS
RS-232 Connections
Connect the COM port on your computer to the 9-pin RS-232 connec-
tor on the front panel of the DFR22, shown in Figure 9, using a
male-to-female serial cable. Pin outs for a 9-pin RS-232 cable are
shown in Figure 10 and listed in Table 1.
NOTE:
Only the TX, RX, and GND pins need to be connected in order
to communicate with the DFR22.
You can also connect a computer or control system to the 3-pin
RS-232 Phoenix connector on the back panel of the DFR22, as shown
in Figure 11.
IMPORTANT:
You CANNOT connect two PCs to the DFR22 at the
same time. However, you CAN connect an AMX or Crestron system
and a PC to the DFR22 at the same time.
RS-232 SERIAL PORT CONNECTION
FIGURE 9
RS-232 CABLE PINOUTS
FIGURE 10
PHOENIX RS-232 SERIAL PORT CONNECTION
FIGURE 11
Table 1.
RS-232 PIN OUTS
Shure Link Network
Up to 16 Shure Link devices, including the DFR22, DFR11EQ,
DP11EQ, P4800, and UA888, can be linked and controlled from one
computer. Using 5-pin DIN cables, connect the
Shure Link IN
and
Shure Link OUT
of each device, as shown in Figure 12.
NOTE: The last device in the chain MUST be connected to the first
device (the one connected directly to the computer) to form a
loop.
SHURELINK NETWORK CONNECTIONS
FIGURE 12
9-PIN FEMALE
TO COMPUTER
9-PIN MALE
TO DFR22
DFR22 9–PIN RS-232
FEMALE CONNECTOR
COMPUTER 9-PIN RS-232
MALE CONNECTOR
DFR22
COMPUTER
PIN NO.
--
--
1
TX
RX
2
RX
TX
3
--
DTR
4
GND
GND
5
--
DSR
6
--
RTS
7
--
CTS
8
--
--
9
RS-232
SHURELINK OUT
SHURELINK IN
RS-232
DEVICE ID # 0
DEVICE ID # 1
DEVICE ID # 2
Summary of Contents for DFR22AZ
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