8611/SM SIGNAL MONITOR OPTION
APPENDIX A
A-1
APPENDIX A
8611/SM SIGNAL MONITOR OPTION
A.1 GENERAL DESCRIPTION
The 8611/SM Signal Monitor Option is capable of providing frequency and
signal strength information about a 21.4 MHz IF signal received at the
WJ-8611 rear panel to a controlling computer. This enables a computer
operating the WJ-RCS Receiver Control Software application to display a
panoramic (pan) representation of the IF signal. The IF PAN display is useful
as an aid to receiver tuning or to observe signal activity. This capability is
made possible through the mechanical and electrical integration of the
WJ-9168 Signal Monitor Module (SMM) within the WJ-8611.
A.2 ELECTRICAL CHARACTERISTICS
The 8611/SM option allows selection of one of two signal monitor inputs
centered at 21.4 MHz. Since the 8611/SM can handle a signal with a
bandwidth of up to 10 MHz, it is ideal for digitizing the WJ-8611’s rear panel
SDU output. The 8611/SM provides a choice of two resolution bandwidths
(8 kHz and 25 kHz) and seven sweep spans ranging between 0.1 to 10.0 MHz,
providing the operator a means to optimize the monitor presentation. The
tuning resolution of the 8611/SM option is 2.5 kHz with a ± 2.0 kHz tuning
accuracy. The electrical integration of the WJ-9168 with the WJ-8611 allows
the two devices to appear as a single device controlled on an IEEE-488 control
bus via a single address due to common command parsing. The addition of the
8611/SM option increases the WJ-8611’s overall power consumption by a
maximum of 2.5 Watts.
Refer to
Table A-1
for a full list of specifications for
the WJ-9168.
A.3 MECHANICAL CHARACTERISTICS
The 8611/SM Monitor option consists of the addition of the WJ-9168 and
associated internal cabling within the unit, the addition of three rear panel
connectors, and the addition of an accessory cable (W11) for interconnection
between the WJ-8611’s SDU output and a new SM input. The WJ-9168 is
mounted internally on the right side panel. The 8611/SM option adds
approximately 2 lbs. (4.4 kg) to the overall weight of the WJ-8611.
A.4 EQUIPMENT SUPPLIED
The following equipment is supplied with the 8611/SM option:
•
WJ-9168 Installation, Operation, and Organizational Level
Maintenance Manual
(P/N 181247-001);
•
P/N 17300-774-003 Cable Assembly (W11) for connecting the
WJ-8611’s SDU output with one of the option’s SM inputs.
Courtesy of http://BlackRadios.terryo.org
Summary of Contents for WJ-8611
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