GAI-Tronics CommandPLUS Series Desktop Console Installation and Service Manual - Manual (Page 44)

Features and Options CommandPLUS Series Desktop Console Installation and Service Manual
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4-Channel E&M Control CP0040A/XCP0040A
The 4-Channel E&M Control Option consists of an additional board that must be installed into the
required supervisor option CP0050/XCP0050A of the console. This option adds E&M control in groups
of four channels, up to 12 channels, to the console.
In addition to the transmit and receive audio lines, E&M control uses two pairs of leads, M-lead pair and
E-Lead pair, to provide control between the console and the base station. The connection to the
transmitter should include the transmitter’s M-lead input and the transmitter’s common (positive or
negative ground). Polarity of the M-lead pair is not important as each M-lead pair is implemented with a
solid-state relay that provides a contact closure between the pair and provides up to 4000 V
RMS
isolation
between the console and the transmitter. The M-lead can switch up to 350 V dc at 130 mA continuous.
The E-lead connection to the receiver should include the receiver’s E-lead output and the receiver’s
common (positive or negative ground). The console’s E-lead is asserted when an approximate 0.6 V dc
or greater differential is applied across the E-lead pair. Polarity of the E-Lead pair is not important as the
E-lead is implemented using a bi-directional optocoupler providing 5000 V
RMS
isolation. Each E-lead
input can tolerate up to 50 V differential across the input pair.
If supervisor control of parallel consoles is required, the E&M output lines from those consoles should be
plugged directly into the
CONSOLE connection of the E&M supervisor option. This ensures that parallel
consoles are not able to transmit on supervised channels. To ensure that transmit audio from parallel
consoles is also supervised, the land-line audio connections from the console to be supervised should be
connected to the
FROM PARALLEL CONSOLE on the E&M supervisor option as well. The supervisor
M-lead input is also implemented using a solid state relay that maintains the necessary isolation.
Refer to the CARD Suite Software for details on configuring E&M control and supervisor control when
installing this option. Refer to Table 15 for the pinout of the E&M connectors.
Table 15. Radio E& M Connections
Channel M-Lead E-Lead
1 6 & 5 16 & 15
2 8 & 7 14 & 13
3 10 & 9 4 & 3
4 12 & 11 2 & 1
The mating connector for the E&M connection is the same style as used to mate with a Motorola GM300
radio. The AMP part number is 104422-1 and should be available through most radio dealers.
Supervisory Control CP0050A/XCP0050A
The Supervisory Control option provides the ability to override parallel consoles on selected channel(s)
to comply with FCC regulations. The unit mounts as a “bustle-back” on the rear panel of the console.
Refer to the CommandPLUS Series Desktop Console Operator’s Manual for user instructions for the
supervisory control.