L3Harris NARDA PMM ER8000 User Manual page 70

7.6.3 Analyzer The PMM ER8000 replies to the command "SAGO" sending back an array of bytes
Reply which contains all the information needed to draw a sweep.
Typically, the user should first send the PMM ER8000 all the setting commands to
insure the receiver is correctly set on the wanted parameters and then read the
reply.
Just as an example, the user could send the following commands:
7.6.3.1 Reply
#SAAT -1*
example
#SAPA Off*
#SPLM a*
#SAFF
150e3,30e6*
#SAHT 2*
#SADT 2*
.............
.............
#SAGO *
The PMMER8000 replies by sending a 48 bytes header followed by a variable
size array of integer (the size depends on frequency settings) as follows:
ID Byte Value
1 A
2 G
3 O
4 =
5 O
6 K
7 0x13 (CR)
8 0x10 (LF)
9 Start
Frequency
10
11
12
13 Stop
14 Frequency
15
16
17 Step
Frequency
18
19
20
21 Reserved
... ...
26
27 Attenuator
28
29 Reserved
... ....
48
7-18 Remote control
Set Attenuator Automatic mode
Switch Preamplifier OFF
Switch Pulse Limiter OFF
Sets the Start frequency to 150kHz
and Stop frequency to 30MHz
Sets the hold time to 2 ms
Sets the detector to AVG
More Command
More Command
Start Sweep in Analyzer Mode
HEADER
Meaning
The first 8 Bytes are just a fixed header and acknowledge the command
Little Endian 32 bit Float figure representing the start frequency of sweep
Little Endian 32 bit Float figure representing the Stop frequency of sweep
Little Endian 32 bit Float figure representing the step frequency of sweep
...
Little Endian 16 bit integer representing the attenuator used
...