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|  MIL-D-81347C(AS)
(2) Bits 10 through 6 - identify the groups of processor pairs to
be mode monitored. There are two groups of five processor pairs. Only octal codes 24 and 25 are
legal for these bit positions. Octal code 24 selects group 1 of the processor pairs. Octal code 25
selects group 2 of the processor pairs.
(3) Bits 5 through 0 - Not used in this word and are designated
as spare.
In response to this instruction, all channels in any one group are
to be monitored simultaneously.
Input Data Transfer - The SRL shall transmit data to the computer
3.51.4.7.4.2
via the DIM. Communications between the SRL and the DIM shall be in accordance with 3.5.1.4.1.
Input Word Formats - The input word formats are shown in
3.5.1.4.7.4.2.1
Figures 42 and 43. Detailed descriptions are given in the following paragraphs.
Processor Status (See Figure 41) - This word provides to the
3.5.1.4.7.4.2.1.1
DIM, monitoring data relative to the RF receiver channel selected for any of the processor channels.
(1) Bit 11- RF Monitor bit and is always set to 0.
(2) Bits 10 through 6- identify the processor channel being
monitored. Only octal codes 00 through 23 are legal for this word.
These octal codes correspond to processor channels decimal O
through 19 respectively.
(3) Bits 5 through O - identify the RF channel applied to the
processor channel. Only BCD codes 01 through 31 are legal for these bit positions. These BCD codes
correspond to receiver channels decimal 1 through 31 respectively.
RF Level Status (See Figure 42) - This word provides to the DIM,
3.5.1.4.7.4.2.1.2
monitoring data relative to RF carrier level on any 1 of 31 VHF sonobuoy frequencies.
(1) Bit 11- RF Monitor bit and for this word is always set to 1.
(2) Bits 10 through 8- Designated as spare and are not used to
convey data.
(3) Bits 7 and 6- Provide the indication of RF level.
(4) Bits 5 through 0 - Identify the RF channel being monitored.
Only BCD codes 01 through 31 are legal for these bit positions. These codes correspond to RF
channels decimal 1 through 31 respectively.
3.5.1.4.7.4.2.1.3
Mode Status (See Figure 43) - This word provides to the DIM,
monitoring data relative to the Auto/Manual mode of operation of processor channel pairs.
(1) Bit 11- RF Monitor bit and for this word is always set to O.
(2) Bits 10 through 6 - Identify which group of Mode monitor
lines is being monitored. There are two groups of five Mode monitor lines. Group 1 is associated
with the four processor pairs at Sensor Station 1 and the processor pair at Sensor Station 3. Group 2
is associated with the four processor pairs at Sensor Station 2, the LOD, and TACCO station. Only
octal codes 24 and 25 are legal for these bit positions. Octal code 24 identifies Mode monitor group 1.
Octal code 25 identifies Mode monitor group 2.
(3) Bit 5- Not used and is designated as spare.
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