Atec Rohde-Schwarz-SMR Series User Manual
Page 8
Microwave Signal Generator ¸SMR
8
Frequency modulation with option ¸SMR-B5
Operating modes
internal, external AC/DC
Maximum deviation
≤15.625 MHz
>15.625 MHz to 31.25 MHz
>31.25 MHz to 62.5 MHz
>62.5 MHz to 125 MHz
>125 MHz to 250 MHz
>250 MHz to 500 MHz
>500 MHz to <1 GHz
1 GHz to
<2 GHz
2 GHz to 10 GHz
>10 GHz to 20 GHz
>20 GHz
39.0625 kHz
78.125 kHz
156.25 kHz
312.5 kHz
625 kHz
1.25 MHz
2.5 MHz
5 MHz
10 MHz
20 MHz
40 MHz
Resolution
<1%, min. 10 Hz
Setting accuracy (AF = 1 kHz)
<5% of reading + 20 Hz
FM distortion (AF = 1 kHz, half max. deviation)
<0.5%
Modulation frequency range
DC to 5 MHz
Modulation frequency response
<3 dB
Carrier frequency offset with FM
≤15.625 MHz
>15.625 MHz to 31.25 MHz
>31.25 MHz to 62.5 MHz
>62.5 MHz to 125 MHz
>125 MHz to 250 MHz
>250 MHz to 500 MHz
>500 MHz to <1 GHz
1 GHz to
<2 GHz
2 GHz to 10 GHz
>10 GHz to 20 GHz
>20 GHz
0.39063 Hz + 1% of deviation
0.78125 Hz + 1% of deviation
1.5625 Hz + 1% of deviation
3.125 Hz + 1% of deviation
6.25 Hz + 1% of deviation
12.5 Hz + 1% of deviation
25 Hz + 1% of deviation
50 Hz + 1% of deviation
100 Hz + 1% of deviation
200 Hz + 1% of deviation
400 Hz + 1% of deviation
EXT1, EXT2 modulation input
Input impedance
Input voltage V
p
for selected deviation
50
Ω/600 Ω
10)
or 100 k
Ω
1 V (high/low indication for
inaccuracy
>3%)
ASK modulation with option ¸SMR-B5
Operating modes
external
Maximum modulation depth
90%
Resolution
0.1%
Data rate
0 Hz to 200 kHz
Rise/fall time (10%/90%)
<10 µs
EXT1 modulation input
Input impedance
Input level
50
Ω/600 Ω
10)
or 100 k
Ω
TTL/HCT signal, selectable
polarity
FSK modulation with option ¸SMR-B5
Operating modes
external
Maximum deviation
≤15.625 MHz
>15.625 MHz to 31.25 MHz
>31.25 MHz to 62.5 MHz
>62.5 MHz to 125 MHz
>125 MHz to 250 MHz
>250 MHz to 500 MHz
>500 MHz to <1 GHz
1 GHz to
<2 GHz
2 GHz to 10 GHz
>10 GHz to 20 GHz
>20 GHz
39.0625 kHz
78.125 kHz
156.25 kHz
312.5 kHz
625 kHz
1.25 MHz
2.5 MHz
5 MHz
10 MHz
20 MHz
40 MHz
Data rate
0 Hz to 2 MHz
Rise/fall time (10%/90%)
<10 µs
EXT1 modulation input
Input impedance
Input level
50
Ω/600 Ω
10)
or 100 k
Ω
TTL/HCT signal, selectable
polarity
Pulse modulation
Operating modes
external, internal with option
¸SMR-B14
On/off ratio
9)
>80 dB
Rise/fall time (10%/90%)
62.5 MHz to 125 MHz
11)
>125 MHz to 450 MHz
>450 MHz
<50 ns
12)
<20 ns
12)
<12 ns
12)
Minimum pulse width
With level control on (ALC ON)
With level control off (ALC OFF)
500 ns
25 ns
Maximum pulse pause
With level control on (ALC ON)
With level control off (ALC OFF)
40 ms
any
Minimum pulse/pause ratio
With level control on (ALC ON)
With level control off (ALC OFF)
1/100
any
Maximum pulse repetition frequency
62.5 MHz to 125 MHz
>125 MHz to 450 MHz
>450 MHz
1 MHz
2 MHz
10 MHz
Pulse delay
typ. 50 ns
Video feedthrough V
pp
<20 mV
PULSE modulation input
Input level
Input impedance
TTL/HCT signal
or selectable
switching thresholds at
+0.5 V or –2.5 V
50
Ω (max. 2 W, overload
protection) or 10 k
Ω
Simultaneous modulation
FM (FSK) is independent of AM (SCAN AM, ASK) and pulse modulation.
Reduced AM bandwidth for simultaneous AM (SCAN AM, ASK) and pulse
modulation.
¸SMR-B23/-B24/-B25 IF input option
¸SMR-B23
¸SMR-B24
¸SMR-B25
IF input
Frequency range
Level
Frequency response
SWR
DC to 700 MHz
<0 dBm
typ.
<5 dB
<2
DC to 700 MHz
<0 dBm
typ.
<7 dB
<2
40 MHz to 6 GHz
<0 dBm
typ.
<7 dB
<2
RF output
Frequency range
LO level
SWR
1 GHz to 20 GHz
<–6 dBm
<2
2 to 27/30/40 GHz
<–3 dBm
<2
1 GHz to 20 GHz
<0 dBm
<2
Conversion loss
(IF input/RF output)
With option R&S
SMR-B15/-B17
13)
Without option
¸SMR-B15/-B17
3 dB to 18 dB
3 dB to 16 dB
3 dB to 23 dB
3 dB to 19 dB
3 dB to 23 dB
3 dB to 19 dB
LF generator with option ¸SMR-B5
Frequency range
Resolution
0.1 Hz to 10 MHz
0.1 Hz
Waveforms
sinewave, squarewave
Frequency drift
<1 × 10
–4
Frequency response (up to 500 kHz)
<0.5 dB
Distortion (up to 100 kHz)
<0.5% (R
L
>200 Ω,
level = 0.5 V)
Open-circuit voltage V
p
(LF connector)
Resolution
Setting accuracy
(at 1 kHz, V
p
= 1 V)
40 mV to 4 V
1 mV
1.5%
Output impedance
approx. 10
Ω
Frequency setting time
(after IEC/IEEE-bus delimiter)
<10 ms