HP 8648 A/B/C/D - Changpuak.ch

Function
1 b-28 Operation Reference
Note The ALPHANUM 7BIT and ALPHANUM 8BIT types can be used for
displaying two-byte special characters, for example Chinese
characters, through a conversion table.
The following examples show how the actual bit streams are
transmitted if “BOAl” is set to the message (MESSAGE NO. 6):
For ALPHANUM 8BIT
First Byte Second Byte
MSB LSB MSB LSB
Bit number b8 b7 b6 b5 b4 b3 b2 bl b8 b7 b6 b5 b4 b3 b2 bl
Bit streams 1 0 1 1 0 0 0 0 1 0 1 0 0 0 0 1
Characters B 0 A 1
For ALPHANUM 7BIT
The eighth bit (b8) is ignored as follows:
First Byte Second Byte
MSB LSB MSB LSB
Bit number 1 b7 b6 b5 b4 b3 b2 bl I b7 b6 b5 b4 b3 b2 bl 1
Bit streams 0 1 1 0 0 0 0 0 1 0 0 0 0 1
Characters B (3) 0 A (2) 1
When converting the binary data stream to 2-level FSK, the first bit
out becomes the least significant bit (LSB) of the 2-level symbol
with the following bit the most significant bit (MSB) of the symbol.
FUNCTION determines the pager’s response depending on the pager
type. The allowable range is 00 to 11.