188)VNA Signal Standard (lower byte) 189-314) Not Used

315-1354) Sweep Data (130 points * 8 bytes/point= 1040 bytes)

315-2386) (259 points * 8 bytes/point= 2072 bytes)

315-4450) (517 points * 8 bytes/point= 4136 bytes) 8 bytes for each data point

1.Gamma224 (highest byte)

2.Gamma

3.Gamma

4.Gamma (lowest byte)

5.Phase225 (highest byte)

6.Phase

7.Phase

8.Phase (lowest byte)

Notes:

return loss = - 20* ( log(Gamma) / log(10) ) VSWR = (1+Gamma)/(1-Gamma)

Phase compares the reflected to the incident (reference)

For Spectrum Analyzer and Transmision Measurement (Option 21) Modes:

44)Start Frequency226 (highest byte)

45)Start Frequency

46)Start Frequency

47)Start Frequency (lowest byte)

48)Stop Frequency227 (highest byte)

49)Stop Frequency

50)Stop Frequency

51)Stop Frequency (lowest byte)

52)Center Frequency228 (highest byte)

53)Center Frequency

54)Center Frequency

55)Center Frequency (lowest byte)

56)Frequency Span229 (highest byte)

57)Frequency Span

58)Frequency Span

59)Frequency Span (lowest byte)

60)Ref Level230 (highest byte)

61)Ref Level

62)Ref Level

63)Ref Level (lowest byte)

64)Scale per div231 (highest byte)

65)Scale per div

224Gamma uses units scaled to 1/10,000

225Phase is transmitted in 1/10ths of a degree

226Scaled by Frequency Scale Factor (bytes 318-319)

227Scaled by Frequency Scale Factor (bytes 318-319)

228Scaled by Frequency Scale Factor (bytes 318-319)

229Scaled by Frequency Scale Factor (bytes 318-319)

230Value sent as (value in dBm * 1000) + 270,000

231Value sent as (value * 1000)

Site Master PM

65

Page 71
Image 71
Anritsu S332D, S331D manual Site Master PM