Atec Rohde-Schwarz-ESPI_Series_DatasheetsЙ - Manual (Page 14)

14 Test Receiver ¸ESPI
Detectors MaxPeak, MinPeak, Average,
Quasi-Peak (QP), Average with meter
time constant (CAV), RMS and
RMS Average (CRMS)
3 detectors can be switched on
simultaneously
Measurement time 100 µs to 100 s, selectable
Level display (analyzer mode)
Result display 501 × 400 pixels (one diagram), max.
2 diagrams with independent settings
Log level scale 10 dB to 200 dB in 10 dB steps
Linear level scale 10 % of reference level per level division
(10 divisions)
Traces max. 3 per diagram
Trace detectors MaxPeak, MinPeak, AutoPeak, Sample,
RMS, Average, Quasi-Peak
Trace functions Clear/Write, MaxHold, MinHold,
Average
Setting range of reference level
Logarithmic level display –130 dBm to +30 dBm, in 0.1 dB steps
Linear level display 70.71 nV to 7.07 V; in steps of 1 %
Units of level scale dBm, dBmV, dBµV, dBµA, dBpW
(log level display);
mV, µV, mA, µA, pW, nW
(linear level display)
Level measurement accuracy
Level accuracy at 128 MHz
(level = –30 dBm, RF attenuation 10 dB,
ref. level –20 dBm, RBW 10 kHz)
0.2 dB ( = 0.07 dB)
Additional error with preselector/preamplifier
(with option ¸ESPI-B2)
0.1 dB
Quasi-peak display in line with CISPR 16-1,
10 Hz pulse repetition frequency
(with option ¸ESPI-B2)
Frequency response
50 kHz +0.5/ 1.0 dB
50 kHz to 3 GHz 0.5 dB ( = 0.17 dB)
3 GHz to 7 GHz  2 dB ( = 0.7 dB)
With option ¸ESPI-B2, preselector switched on
50 kHz +0.8/ 1.3 dB
50 kHz to 3 GHz 0.8 dB ( = 0.27 dB)
Attenuator 0.2 dB ( = 0.07 dB)
Reference level switching 0.2 dB ( = 0.07 dB)
Display nonlinearity log/lin (S/N 16 dB)
RBW 120 kHz
0 dB to –70 dB
–70 dB to –90 dB 0.2 dB ( = 0.07 dB)
0.5 dB ( = 0.17 dB)
RBW 300 kHz
0 dB to –50 dB
–50 dB to –70 dB 0.2 dB ( = 0.07 dB)
0.5 dB ( = 0.17 dB)
Bandwidth switching uncertainty
(referenced to RBW = 10 kHz)
10 Hz to 100 kHz
300 kHz to 10 MHz
FFT 1 Hz to 3 kHz 0.1 dB ( = 0.03 dB)
0.2 dB ( = 0.07 dB)
0.2 dB ( = 0.03 dB)
Total measurement uncertainty 0 Hz to 3 GHz
Analyzer without preselection
Receiver/analyzer with preselection 0.5 dB
<1.5 dB
Audio demodulation
Modulation modes AM and FM
Audio output loudspeaker and headphones output
¸ESPI 3 ¸ESPI 7
Trigger functions
Trigger
Span 10 Hz
Trigger source free run, video, external, IF level
Trigger offset 125 ns to 100 s, resolution min. 125 ns
or 1 % of offset
Span = 0 Hz
Trigger source free run, video, external, IF level
Trigger offset ±125 ns to 100 s, resolution min.
125 ns, depending on sweep time
Max. deviation of trigger offset ±(125 ns + (0.1 % × delay time))
Gated sweep
Trigger source external, IF level, video
Gate delay 1 µs to 100 s
Gate length 125 ns to 100 s, resolution min. 125 ns
or 1 % of gate length
Max. deviation of gate length ±(125 ns + (0.05 % × gate length))
Inputs and outputs (front panel)
RF input N female, 50 
VSWR (RF attenuation >0 dB)
f 3 GHz 1.5:1
f 7 GHz  2.0:1
Input attenuator 0 dB to 70 dB in 10 dB steps
Probe power supply 3-pin female: +15 V DC, –12.6 V DC and
ground, max. 150 mA
5-pin mini DIN female: ±10 V DC
and ground, max. 200 mA
Keyboard connector PS/2 female for MF keyboard
AF output mini jack
Output impedance 10 
Open-circuit voltage up to 1.5 V; adjustable
Inputs and outputs (rear panel)
IF 20.4 MHz Z
out
= 50 , BNC female
Level
RBW 30 kHz, FFT
RBW 100 kHz
–10 dBm at reference level,
mixer level
60 dBm
0 dBm at reference level,
mixer level
–60 dBm
Reference frequency
Output
Output frequency
Level
BNC female
10 MHz
0 dBm nominal
Input
Input frequency
Required level
BNC female
10 MHz
0 dBm into 50

Power supply connector for noise source BNC female, 0 V and 28 V switchable,
max. 100 mA
External trigger/gate input BNC female, 10 k
Voltage 1.4 V
IEC/IEEE-bus remote control interface in line with
IEC 60625 (IEEE 488.2)
Command set SCPI 1997.0
Connector 24-pin Amphenol female
Interface functions SH1, AH1, T6, L4, SR1, RL1,
PP1, DC1, DT1, C0
Serial interface RS-232-C interface (COM),
9-pin D-SUB connector
Printer interface parallel interface
(Centronics-compatible)
Mouse connector PS/2 female
User interface 25-pin D-SUB female
Connector for external monitor (VGA) 15-pin D-SUB female
¸ESPI 3 ¸ESPI 7