10.3.4.37 ATPL360_REG_SIGNAL_CAPTURE_START (0x401D)

Trigger to start signal capture process.

Access: Write-only.

Value range: 9 bytes (see Table 10-36).

Table 10-36. Signal Capture Start Parameters
Byte 0Byte 1Byte 2Byte 3Byte 4Byte 5Byte 6Byte 7Byte 8
ModeStart timeDuration
where:
  • Mode: Set according to the following table:
    Table 10-37. Capture Mode Bit-field
    bit 7bit 6bit 5bit 4bit 3bit 2bit 1bit 0
    —Time ModeBand ModeSignal ModeChannel
    • Time Mode:
      • 0: Start time in absolute mode
      • 1: Start time in relative mode
    • Band Mode:
      • 0: Channel mode. Low Pass Equivalent signal at 62.5 kHz sampling rate. Each sample is composed of 6 bytes (2 bytes real part, 2 bytes imaginary part and 2 bytes AGC value)
      • 1: Full-band mode. Signal at 1 MHz sampling rate. AGC is fixed. Each sample is composed of 1 byte (only real part), using μ-law compression algorithm
    • Signal Mode (only used for Full-band mode):
      • 0: Low level signals up to +/- 100 mV amplitude
      • 1: High level signals up to +/- 13V amplitude
    • Channel (only used for Channel mode): Select channel to capture [1-8]
  • Start Time: Instant when signal capture has to start referred to 1 μs PHY counter (absolute or relative value, depending on Time Mode)
  • Duration: Signal capture duration in μs. The maximum duration depends on the selected Band Mode and the PL360 PRIME binary used (see ATPL360_REG_VERSION_NUM (0x4003)):
    • Single Channel only: 97008 (Channel mode); 36378 (Full-band mode)
    • Single/Double Channel: 70176 (Channel mode); 26316 (Full-band mode)