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3) Current Instrument Date Format
143
4) Not Used
5-11) Model Number (7 bytes in ASCII)
12-15) Software Version (4 bytes ASCII)
16) Measurement Mode
144
17-20) Time/Date (in Long Integer
145
)
21-30) Date in String Format (mm/dd/yyyy)
31-38) Time in String Format (hh:mm:ss)
39-54) Reference number stamp (16 bytes in ASCII)
55-56) # data points (130, 259 or 517 or 401 or 100)
For all Site Master VNA Modes :
57) Start Frequency
146
(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) Minimum Frequency Step Size (highest byte)
66) Minimum Frequency Step Size
67) Minimum Frequency Step Size
68) Minimum Frequency Step Size (lowest byte)
69) Scale Top
147
(highest byte)
70) Scale Top
71) Scale Top
72) Scale Top (lowest byte)
73) Scale Bottom (highest byte)
74) Scale Bottom
75) Scale Bottom
76) Scale Bottom (lowest byte)
77) Frequency Marker 1
148
(higher byte)
78) Frequency Marker 1 (lower byte)
79) Frequency Marker 2 (higher byte)
80) Frequency Marker 2 (lower byte)
81) Frequency Marker 3 (higher byte)
82) Frequency Marker 3 (lower byte)
83) Frequency Marker 4 (higher byte)
84) Frequency Marker 4 (lower byte)
85) Frequency Marker 5 (higher byte)
86) Frequency Marker 5 (lower byte)
87) Frequency Marker 6 (higher byte)
88) Frequency Marker 6 (lower byte)
50 Site Master PM
143 00h = MM/DD/YYYY, 01h = DD/MM/YYYY, 02h = YYYY/MM/DD
144 Refer to Control Byte #3 “Select Measurement Mode” for detailed value.
145 Time/Date long integer representation is in seconds since January 1, 1970
146 Frequency units are Hz
147 See Control Byte #4 “Set Site Master Scale” for data format
148 marker point = (# of data points–1)*(marker freq – start freq)/(stop freq – start freq ) where # of data points can
be found in bytes 55-56, start freq is in bytes 57-60, and stop freq is in bytes 61-64.