NARDA PMM 9010 Series, User Manual

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14-26 Remote control
14.6.3 Analyzer
Reply
The PMM 9010 replies to the command “ SAGO ” sending back an array of bytes
which contains all the information needed to draw a sweep.
Typically, the user should first send the PMM 9010 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:
14.6.3.1 Reply
example
#SAAT -1* Set Attenuator Automatic mode
#SAPA Off* Switch Preamplifier OFF
#SPLM a* Switch Pulse Limiter OFF
#SAFF
150e3,30e6* Sets the Start frequency to 150kHz
and Stop frequency to 30MHz
#SAHT 2* Sets the hold time to 2 ms
#SADT 2* Sets the detector to AVG
............. More Command
............. More Command
#SAGO *
Start Sweep in Analyzer Mode
The PMM9010 replies by sending a 48 bytes header followed by a variable size
array of integer (the size depends on frequency settings) as follows:
HEADER
ID Byte Value Meaning
1 A The first 8 Bytes are just a fixed header and acknowledge the command
2 G
3 O
4 =
5 O
6 K
7 0x13
(CR)
8 0x10 (LF)
9 Start
Frequency
Little Endian 32 bit Float figure representing the start frequency of sweep
10
11
12
13 Stop
Frequency
Little Endian 32 bit Float figure representing the Stop frequency of sweep
14
15
16
17 Sep
Frequency
Little Endian 32 bit Float figure representing the step frequency of sweep
18
19
20
21
…
26
Reserved
…
…
27 Attenuator Little Endian 16 bit integer representing the attenuator used
28
29
…
48
Reserved
….
…