HP 8920A - Radio Unit under Test; System Identity

418
S:\HP892XX\USRGUIDE\manual\encoscrn.fb
Chapter 10, Signaling Encoder (AF Generator 2)
Using the MPT 1327 Encoder
System Identity
The System Identity uses two areas to enter the system identity number as
either a decimal or hexadecimal value. When a value is entered in either field, the
corresponding value is automatically entered in the other field.
The first field is a four-digit hexadecimal integer with leading zeros (
H indicates
the hexadecimal number base). It has the range 0 through 7FFF
16
and its default is
0000
16
.
The second field is a five-digit decimal integer with leading zeros. It has the range
0 through 32767 and its default is 00000.
It is essential that the 15-bit system identity transmitted by the Test Set matches
the system identity programmed into the radio unit. If there is not a match, the RU
will not recognize the forward control channel and no communication will be
possible.
Radio Unit Under Test
The Radio Unit Under Test function uses two input fields; a 7-bit Prefix
field and a 13-bit
Ident field. This allows you to enter the prefix and identity of
your radio unit (RU).
Each RU has a unique prefix/ident value that is used to address messages to that
RU only. An RU can also have a number of “group” prefix/ident values that it and
several other RUs respond to.
The prefix is a three-digit decimal integer with leading zeros. It has the range 0
through 127 and its default is 000.
The ident is a four-digit decimal integer with leading zeros. It has the range 0
through 8191 and its default is 0001.