Anritsu S332D, S331D manual Vswr

bit 7 : Unit of Measurement (1b = Metric, 0b = English)

194) Status Byte 4:
(LSB)	bit 0 - 1 : DTF Windowing Mode
	bit: 1 0
	0 0	- Rectangular (No Windowing)
	0 1	- Nominal Side Lobe
	1 0	- Low Side Lobe
	1 1	- Minimum Side Lobe

bits 2 – 7 : Not Used 195-228) Not Used

229-1268) Sweep Data (130 points * 8 bytes/point = 1040 bytes)

229-2300) Sweep Data (259 points * 8 bytes/point = 2072 bytes)

229-4364) Sweep Data (517 points * 8 bytes/point = 4136 bytes) 8 bytes for each data point

1.gamma15 MSB

2.gamma

3.gamma

4.gamma LSB

5.phase16 MSB

6.phase

7.phase

8.phase LSB

Note:	return loss = - 20* (log(gamma) / log(10))
	VSWR	= (1+gamma)/(1-gamma)

phase compares the reflected to the incident (reference)

For Spectrum Analyzer Mode:

57)Start Frequency17 (highest byte)

58)Start Frequency

59)Start Frequency

60)Start Frequency (lowest byte)

61)Stop Frequency (highest byte)

62)Stop Frequency

63)Stop Frequency

64)Stop Frequency (lowest byte)

65)Center Frequency (highest byte)

66)Center Frequency

67)Center Frequency

68)Center Frequency (lowest byte)

69)Frequency Span (highest byte)

70)Frequency Span

71)Frequency Span

72)Frequency Span (lowest byte)

73)Minimum Frequency Step Size (highest byte)

74)Minimum Frequency Step Size

75)Minimum Frequency Step Size

76)Minimum Frequency Step Size (lowest byte)

15Gamma data uses 1/1000 units.

16Phase data uses 1/10 degree unit.

17Frequency in Hz

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