Handbook for Sound Engineers

(Wang) #1

1480 Chapter 39


Bit 0 1 2 3 4
State 0 0 0 0
0

Reserved, must always be set to 0 0 0 0 0.

Bit 5 Squelch.
0 Receiver squelch inactive, default.
1 Receiver squelch active.
Bit 6 Link Loss.
0 RF link is operating, default.
1 RF link not operating.
Bit 7 Low Battery.
0 No low battery condition, default.
1 Low battery condition.
Note 1. This byte is only used for wireless microphones, wired
microphones should set all bits to 0.
Status Data Page 0 Byte 7—Wireless Microphone Battery Status
Bits 0–1 Reserved.
Bit 0 1
State 0 0 Reserved, must always be set to 0 0.
Bits 2–5 Battery Charge Proportion.
Bit 2 3 4 5
State 0 0 0 0 100%, default.
1 0 0 0 90%.
0 1 0 0 80%.
1 1 0 0 70%.
0 0 1 0 60%.
1 0 1 0 50%.
0 1 1 0 40%.
1 1 1 0 30%.
0 0 0 1 20%.
1 0 0 1 10%.
0 1 0 1 0%.
x x x x All other states reserved.
Bits 6–7 Battery Type.
Bit 0 1
State 0 0 Not indicated, default.

1 0 Battery type is primary cell.
0 1 Battery type is rechargeable.
1 1 Reserved.
Note 1. Microphones supporting low battery indication use byte 6
bit 7. Microphones supporting battery charge indication must use
both byte 7 bits 2 – 5, and byte 6 bit 7.
Status Data Page 0 Byte 8—Wireless Microphone Error Handling
Flags
Bits 0–2 Reserved.
Bit 0 1 2
State 0 0 0 Reserved, must always be set to 0 0 0.

Table 39-3. Status Data Page (Continued)

Bits 3–4 Error Concealment
Bit 3 4
State 0 0 Error concealment not in use, default.
1 0 Error concealment in use.
0 1 Reserved.
1 1 Reserved.
Bits 5–7 FEC Capacity.
Bit 5 6 7
State 0 0 0 FEC capacity used 0%, default.
1 0 0 FEC capacity used 20%.
0 1 0 FEC capacity used 40%.
1 1 0 FEC capacity used 60%.
0 0 1 FEC capacity used 80%.
1 0 1 FEC capacity used 100%.
0 1 1 FEC capacity overloaded.
1 1 1 Reserved.
Status Data Page 0 Bytes 9–23—Reserved
All bits of Page 0 Bytes 9–23 are reserved and should be set to 0.
Status Data Page 1 Bytes 1–12—Manufacturer Identification
Manufacturer identification information should be sent in 7 bit
ASCII form using only printable characters in the range of 00, and
20 to 7E Hex, and starting in byte 1. The use of nonprintable char-
acters in the range of 01 to 1F Hex is not allowed. Each byte has a
0 of reserved usage in bit 7, followed by the MSB of the ASCII
code in bit 6, through the LSB in bit 0. This allows 12 characters
for manufacturer identification. Fill any unused bytes with zeros.
Status Data Page 1 Bytes 13–20—Microphone Model Identification
Microphone model identification information should be sent in
7 bit ASCII form using only printable characters in the range of
00, and 20 to 7E Hex, and starting in byte 13. The use of nonprint-
able characters in the range of 01 to 1F Hex is not allowed. Each
byte has a 0 of reserved usage in bit 7, followed by the MSB of
the ASCII code in bit 6, through the LSB in bit 0. This allows 8
characters for microphone model identification. Fill any unused
bytes with zeros.
Status Data Page 1 Bytes 21–23—Reserved
All bits of Page 1 Bytes 21–23 are reserved and should be set to 0.
Status Data Page 2 Bytes 1–8—Microphone Serial Number
Microphone serial number information should be sent in 7-bit
ASCII form using only printable characters in the range of 00, and
20 to 7E Hex, and starting in byte 1. The use of nonprintable char-
acters in the range of 01 to 1F Hex is not allowed. Each byte has a
0 of reserved usage in bit 7, followed by the MSB of the ASCII
code in bit 6, through the LSB in bit 0. This allows 12 characters
for microphone serial numbers. Fill any unused bytes with zeros.
Status Data Page 2 Byte 9—Microphone Hardware Revision
Main Counter
The information is sent as two binary coded decimal (BCD) dig-
its. The L-nibble or lower nibble is sent with its LSB in bit 0, and
MSB in bit 3. The U-nibble or upper nibble is sent with its LSB in
bit 4, and MSB in bit 7. Numbers less than 10 are coded with a
leading 0 in the U-nibble.
Status Data Page 2 Byte 10—Microphone Hardware Revision
Index Counter

Table 39-3. Status Data Page (Continued)
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