Strata Operations Guide
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NOTE:
Even though each preset in a system configured to operate in the Frequency-Locked-to-Preset
mode has a pre-assigned frequency, the user may temporarily dial in a new channel (frequency) from the
front panel which will remain in effect until, (1) the unit is power-cycled, or (2) a new preset is selected.
Either condition will automatically select the frequency associated with the current preset, i.e., revert back
to the pre-assigned frequency associated with the current preset.
Definition of Frequency-Unlocked-to-Presets mode:
In this mode, no channel (frequency) is
associated with or locked to any preset. Regardless of all other preset configuration parameters, the last
selected frequency (channel) will be the frequency used for all presets. To change the frequency (while
any preset is selected), the front panel control is used to select a new (channelized) frequency. The last
frequency selected will remain programmed as the current (default) frequency until changed by the user
using the front panel control. Turning the system power off and back on or selecting a new preset will not
change the currently selected frequency.
Remember, the selection of frequency control modes, i.e., frequency locked to presets, or frequency
unlocked to presets, cannot be changed in the field.
Preparations
The following preparations should be completed prior to attempting to configure the Strata TX radio
system using a serial data connection:
Establish serial data connections to and from the radio system. See the sketch below for details on how to
connect a PC to the Strata TX radio system.
PC
Null Modem Connection
Strata TCU or TXU
Figure 5 – Serial Data Connection Details
Notes:
•
A serial data connection may be made to either a TCU or TXU pair so long as the TCU and the TXU
are inter-connected with a coaxial cable (enables system telemetry link and permits simplex powering
of adjacent units). Both units must be powered ON.
•
Use a standard 9 pin RS-232 serial data
“null”
modem connection (DTE-to-DTE configuration)
between the PC and the radio unit(s) as shown in Figure 5. above. Recommended serial data cable
length not to exceed 50 feet.
•
The system being configured should be interconnected as it will be used, i.e., all units inter-connected
properly with the appropriate RF termination connected to either the TXU or HPU RF output
connector. Note that some applications may use a TCU or TXU in a “stand-alone” mode.
