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bit 7 : Unit of Measurement (1b = Metric, 0b = English)
194) Status Byte 4:
(LSB) bit0-1:DTFWindowing Mode
bit: 1 0
||
0 0 - Rectangular (No Windowing)
0 1 - Nominal Side Lobe
1 0 - Low Side Lobe
1 1 - Minimum Side Lobe
bits2–7:NotUsed
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. gamma
15
MSB
2. gamma
3. gamma
4. gamma LSB
5. phase
16
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 Frequency
17
(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)
Site Master PM 17
15 Gamma data uses 1/1000 units.
16 Phase data uses 1/10 degree unit.
17 Frequency in Hz