Rohde & Schwarz RTM2032 - Search

Remote Control
R&S
®
RTM20xx
460User Manual 1317.4726.02 ─ 01
Sample value
Y
n
= yOrigin + (yIncrement * byteValue
n
)
The format UINT,8 has the data range 0 to 255. The voltage value for byte value 128 is:
Y
n
= − 2.55E
-2
+ (2E
− 4
* 128) = 0.0001
The center of the display at position 0 div always has the byte value 127.5. The corre-
sponding voltage value is:
Y
n
=
− 2.55E
-2
+ (2E
− 4
* 127.5) = 0
8-bit and 16-bit data
At the end of the above example, the 8-bit waveform is read as 16-bit data, for example,
0xFF is read 0xFF00, or 0x1A is read 0x1A00. The yOrigin value is the same in both
cases, but the yIncrement differs.
8-bit data 16-bit data Result
yIncrement * byteValue
n
2e
-4
* 128 7,8125E
-7
* 32768
0,0256 V
2e
-4
* 125 7,8125E
-7
* 32000
0,025 V
In the reverse case, if a 16-bit waveform is read with 8-bit data format, data precision may
be reduced. Data values ar truncated, and only the more significiant bits remain. For
example, the 16-bit data 0xabcd is read 0xab in 8-bit format, and cd is lost.
15.3.2 Search
15.3.2.1 Searching for a Pulse of Specified Width
Search for positive pulses with pulse width 12 ± 10 µs (2 µs to 22 µs).
Command description in: chapter 15.2.12, "Search", on page 358.
SEAR:STAT ON // Turn on search
SEAR:COND WIDTH // Select search condition
SEAR:SOUR CH2 // Configure search source
SEAR:TRIG:WIDT:POL POS // Configure search parameters: Polarity
SEAR:TRIG:WIDT:RANG WITH // Configure search parameters: Condition = within
SEAR:TRIG:WIDT:WIDT 12e-6 // Configure search parameters: Pulse width
SEAR:TRIG:WIDT:DELT 10e-6 // Configure search parameters: +/- delta
SEAR:RESD:SHOW ON // Show result table
SEAR:RCO? // Get number of search events found
<-- 1.400E+01
SEAR:RES:ALL? // Get all search results
<-- 1,5.201200e-06,0,WIDTH,POSITIVE,1.220160e-05,2,4.120040e-05,0,WIDTH,
POSITIVE,3.076800e-06,3,4.732480e-05,0,WIDTH,POSITIVE,9.127200e-06,4,
6.499960e-05,0,WIDTH,POSITIVE,1.835160e-05,5,8.634920e-05,0,WIDTH,POSITIVE,
Programming Examples