MDS 05-3624A01, Rev. B
OEM Series™ I/O Guide
29
1. For enclosed units, remove the top cover from the transceiver by
loosening the eight screws and lifting straight up.
2. Carefully remove the shield cover from the PC board.
3. Locate the helical filters. See
.
4. Apply a steady signal to the radio at the programmed receive
frequency (–80 dBm level recommended; no stronger than –60
dBm). This can be done with a signal generator or an over-the-air
signal.
5. Measure the radio’s RSSI using a terminal interface. See
Section 4.0, TRANSCEIVER PROGRAMMING
6. With a non-metallic tool, carefully adjust each section of the helical
filter for maximum RSSI. Re-install the cover to the transceiver.
Invisible place holder
Figure 14. Helical Filter Location
(Shield cover removed)
6.4 Upgrading the Radio’s Software
From time to time, new product features or software maintenance files
become available from MDS. This section describes the steps necessary
to install new software into the transceiver using a PC connected to the
radio’s
DATA INTERFACE
port.
When software upgrades become available, they can be obtained on the
MDS Web site at www.microwavedata.com, or you can contact MDS
to request radio software.
NOTE:
Software upgrades are distributed as ASCII files with a “.S28”
extension. These files use the Motorola S-record format.
HELICAL
ADJUSTMENTS
HELICAL
ADJUSTMENTS
