Specifications

Integrator’s Reference Manual for Polycom HDX Systems
D - 4
Remote Control
This section provides information about the IR signals for Polycom HDX
systems.
Notes
• Wake up – 2.6 ms on; 2.6 ms off
• 0–559 µs (22 pulses at 38 KHz) on; 845 µs (33 pulses at 38 KHz) off
• 1–845 µs (33 pulses at 38 KHz) on; 1192 µs (46 pulses at 38 KHz) off
• EOM–559 µs (22 pulses at 38 KHz) on
• System Code consists of a User ID field (upper nibble) and the Polycom
Vender Code (lower nibble) with value 0x5. The default User ID value is
0x3, so the default System Code value is 00110101 or 0x35.
• Parity is a 2-bit field consisting of a "parity" bit (b1) and a "toggle" bit (b0).
Parity is even.
• Inter-burst timing is 2200 pulse times at 38.062 KHz or 57.8 ms
• 38.062 KHz signal is at 1/3 duty cycle to LED
• Multi-bit fields are transmitted most significant bit first
• Bits are labeled b0..bn, where b0 is the least significant bit
Protocol is: <Wake up> + <System Code> + <Key Code> + <Parity> + <EOM>
This information is provided for reference only. Polycom claims no responsibility or liability for
programmed third-party remote control devices.
Key Name Key Code Key Code Parity
#11000CHEven
*10110BHOdd
0 110000 30H Even
1 110001 31H Odd
2 110010 32H Odd
3 110011 33H Even
4 110100 34H Odd
5 110101 35H Even
6 110110 36H Even