Atec Rohde-Schwarz-SMR Series - Manual (Page 9)

Microwave Signal Generator ¸SMR 9
¸SMR-B14 pulse generator option
Operating modes single or double pulse (auto-
matically or externally trig-
gered), delayed pulse (exter-
nally triggered), gate mode
(external)
Active trigger edge positive or negative
Pulse repetition period
Resolution
Accuracy
100 ns to 85 s
5 digits, min. 20 ns
<1 × 10 −4
Pulse width
Resolution
Accuracy
20 ns to 1 s
4 digits, min. 20 ns
<1 × 10 −4
+ 3 ns
Pulse delay
Resolution
Accuracy
20 ns to 1 s
4 digits, min. 20 ns
<1 × 10 −4
+ 3 ns
Double pulse
Resolution
Accuracy
60 ns to 1 s
4 digits, min. 20 ns
<1 × 10 −4
+ 3 ns
Trigger delay
Jitter typ. 50 ns
<10 ns
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
SYNC output TTL/ACT signal, (R
L
≥50 Ω),
40 ns pulse width
PULSE/VIDEO output TTL/ACT signal (R
L
≥50 Ω)
Digital sweep, sweep in discrete steps
RF sweep, AF sweep
Operating modes
Sweep range
Step width (lin)
Step width (log)
automatic, single-shot, man-
ual or externally triggered,
linear or logarithmic
user-selectable
user-selectable
0.01% to 100%
Level sweep
Operating modes
Sweep range
Step width
automatic, single-shot, man-
ual or externally triggered,
logarithmic
0 dB to 20 dB
0.01 dB to 20 dB
Step time
Frequency sweep
Level sweep
Resolution
10 ms to 5 s
1 ms to 5 s
0.1 ms
Markers 10, user-selectable
MARKER output signal TTL level, selectable polarity
X output 0 V to 10 V
BLANK output signal TTL level, selectable polarity
¸SMR-B4 ramp sweep option
RF sweep 14)
Operating modes
Sweep range
Resolution
Accuracy
automatic, single-shot, man-
ual or externally triggered;
start/stop, center frequency/
span
user-selectable
1 kHz
(0.005% (of deviation)/
(sweep time/s) + reference
error
1) 2) 3) 4) 5) 6) 7) 8) 9) 10) 11) 12) 13) 14)
Sweep time 10 ms to 100 s (switchover
time
≤30 ms at 1 GHz, 2 GHz,
10 GHz and 20 GHz)
Max. sweep rate
≤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
2.34375 MHz/ms
4.6875 MHz/ms
9.375 MHz/ms
18.75 MHz/ms
37.5 MHz/ms
75 MHz/ms
150 MHz/ms
300 MHz/ms
600 MHz/ms
1200 MHz/ms
2400 MHz/ms
MARKER output signal TTL level, selectable polarity
X output 0 V to 10 V
BLANK output signal TTL level, selectable polarity
List mode frequency and level values
can be stored in a list and will
be set fast
Permissible level variation 20 dB
Operating modes auto, single-shot, manual or
externally triggered
Maximum number of channels 2003
Step time
Resolution 10 ms to 5 s
0.1 ms
Memory for instrument setups
Storable setups 50
Remote control
System IEC60625 (IEEE488)
Rev. 2003
Command set SCPI 1995.0
Connector 24-contact Amphenol
IEC/IEEE-bus address 0 to 30
Interface functions SH1, AH1, T6, L4, SR1, RL1,
PP1, DC1, DT1, C0
1) ¸SMR20: level <+5 dBm without or <+3 dBm with option ¸SMR-B23 or
¸SMR-B25; ¸SMR27/30/40: level <+2 dBm without or <+0 dBm with option
¸SMR-B24.
2) 10 MHz ≤f ≤30 MHz: typ. <–50 dBc.
3) Specifications for harmonics above 20 GHz (¸SMR20), 27 GHz (¸SMR27),
30 GHz (¸SMR30) and 40 GHz (¸SMR40) only typical.
4) With option ¸SMR-B19/-B20 the maximum level is likely to be reduced by up to 0.1 dB/GHz.
The maximum level is reduced by up to –2 dB in the temperature range 35°C to 55°C.
5) From 10 MHz to 50 MHz, the specified total deviation is only valid in the temperature range 15 °C
to 35 °C. The deviation outside this temperature range is likely to be higher by max. 0.7 dB.
6) From 10 MHz to 50 MHz, the specified frequency response is only valid in the temperature range
15
°C to 35°C.
7) Residual level at set RF.
8) The modulation depth adjustable with adherence to the AM specifications continuously
decreases from 6 dB below the maximum level up to the maximum level.
9) This specification does not apply
a) to non-interrupting level setting (ATTENUATOR MODE FIXED) if option ¸SMR-B15/-B17
is used,
b) to levels below –7 dBm without option ¸SMR-B15/-B17,
c) to external level control mode (EXT ALC).
10) 50 Ω or 600 Ω selectable by means of internal jumpers.
11) Pulse modulation not specified for frequencies <62.5 MHz.
12) Only valid if level control set to OFF (ALC OFF).
13) Option ¸SMR-B15/-B17 in 0 dB position. The conversion loss can be increased by 10 dB to
110 dB in 10 dB steps using option ¸SMR-B15/-B17. With option ¸SMR-B19/-B20, the
conversion loss increases by up to 0.1 dB/GHz.
14) Cannot be combined with frequency modulation. Pulse modulation possible, but not specified.