Skanti TRP 9250 S, Technical Manual

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CONFIGURATION PROM
The TRP 9250 series Configuration PROM contains frequencies, frequency bands and system
configuration parameters for customizing the equipment.
Legal frequencies with corresponding legal mode and frequency bands are programmed in the
PROM address area from 256d/0100h to 7167d/1BFFh. The PROM area is divided into three
sub-areas, each with a specific frequency information and representation.
256d/0100h to 4095d/0FFFh:
PROM area reserved for customer specified frequencies. Up to 959 single or simplex frequencies
or up to 479 duplex frequencies may be programmed in the 4-byte Frequency Record Format.
The first 200 single, simplex or duplex frequencies including their corresponding mode can be
recalled directly via the keyboard as successively short-numbers ( 200 to 399 ) are assigned. If a
limited transmitter frequency range is wanted one or more frequency bands may be programmed
in this PROM area, using the 8-byte Frequency Band Format. A Limiter Byte containing 255d/FFh
must be programmed to indicate the end of frequency information.
4096d/1000h to 5119d/13FFh:
PROM area reserved for GMDSS Distress and Safety Frequencies and other safety frequencies.
The frequencies and their corresponding mode can be recalled with short-numbers from 100 to
199, which are successively assigned. The PROM area will contain up to 256 single or simplex
frequencies or 128 duplex frequencies represented in the 4-byte Frequency Record Format. If
the whole PROM area is not filled, a Limiter Byte containing 255d/FFh must be programmed to
indicate the end of frequency information.
5120d/1400h to 7167d/1BFFh:
This PROM area contains all ITU SSB channels and DSC and Telex TX frequencies. All ITU SSB
channels can be recalled directly with the mode automatically set to SSB by using the ITU channel
number as short-number. SSB ITU channels without number can also be recalled as successively
higher numbers are assigned. The frequencies are represented in the 11-byte Fixed Step
Frequencies Format. A Limiter Byte containing 255d/FFh must always be programmed to indicate
the end of frequency information.
7168d/1C00h to 8191d/1FFFh:
System configuration parameters are programmed in the higher part of the PROM from
8191d/1FFFh and downwards.
PROM Type: 27C64, 200nS, 8K x 8
PROM Location: Transceiver Unit, TU Control Board 910
CONFIGURATION PROM INSTALLATION
TRP 9250 TECHNICAL MANUAL 3-29