Atec Tektronix-2715 - Manual (Page 6)

page 6
2715
Characteristics
Coninued Manual: 3 Hz to 300 kHz in 1-3 sequence,
or WIDE.
Off:
≈ RBW.
Frequency Span/Div Range – 100 MHz to
1 kHz selected in 1-2-5 sequence or any
value from 100 MHz to 1 kHz via the keypad
or UTIL menu, plus 180 MHz (MAX SPAN)
and 0 Hz. Opt. 50 and 70: 215 MHz/div
(MAX SPAN).
Span Accuracy – ±3% measured over the
center eight divisions.
AMPLITUDE RELATED
Flatness –
±2 dB (relative to reference level at
100 MHz) measured with 10 dB internal RF
attenuation (preamp off).
Opt. 50 and 75: ±3 dB above 1.8 GHz.
Vertical Display Modes – 10, 5, 1 dB/div,
Linear.
Measurement Range – -90 dBmV (preamp
on) to +68.8 dBmV (–139 to +20 dBm).
Display Dynamic Range –
80 dB maximum (Log Mode); 8 divisions
maximum (Linear mode).
Opt. 50 and 75: Dynamic range reduced if
there is signal energy at or near 2.11 GHz.
Baseline will typically rise to within 10 to
20 dB of signal applied near 2.11 GHz.
Reference Level Range –
Log Mode: –21.2 dBmV to +68.8 dBmV
(–70 to +20 dBm); –41.2 dBmV to
+48.8 dBmV with preamp on.
Linear Mode: 10.83 µV/div to 342.33 mV/div
(1.08 µV/div to 34.23 mV/div with
preamp on).
Reference Level Steps –
Log Mode: 1 dB or 10 dB.
Linear Mode: 10.83 µV/div to 342.33 mV/div
in 1-2-5 sequence; >0.2 div/increment with
FINE REF LVL STEP activated.
Display Amplitude Accuracy –
10 dB/div: ±1.0 dB/10 dB to a maximum
cumulative error of ± 2.0 dB over the 70 dB
range and a maximum cumulative error of
± 4.0 dB over the 80 dB range; accuracy and
range specifications are affected by the SNR
of selected RBW and are valid only for the
maximum specified in the following table:
RBW dB Down
5 MHz 40
1 MHz 40
300 kHz 50
100 kHz 50
30 kHz 60
10 kHz 60
3 kHz 80
1 kHz 80
300 Hz 80
5 dB/div: ±1.0 dB/10 dB to a maximum cumu-
lative error of ±2.0 dB over the 40 dB range.
1 dB/div: ±1 dB maximum error over the
8 dB range.
Linear Mode: ±5% of full scale.
RF Attenuation Range – 0 to 50 dB in 2 dB
steps.
Maximum Sensitivity (at 300 Hz RBW) –
-78 dBmV (–127 dBm); –90 dBmV
(–139 dBm) with preamp on.
SPURIOUS RESPONSE (PREAMP OFF)
Residual Spurious Response –
<-51 dBmV (<-100 dBm) with 0 dB RF
attenuation, except at 1780 MHz where the
spurious response is <-41 dBmV
(<-90 dBm).
Opt. 50 and 75: <-26 dBmV (–75 dBm) at
2.0 GHz.
3rd Order IM Distortion –
<-70 dBc from any two on-screen signals
with any frequency span.
Opt. 50 and 75: typically <65 dBc at
2.15 GHz.
2nd Harmonic Distortion – <-66 dBc mea-
sured with 1st mixer input level of
<+9 dBmV.
LO Emission –
<-21 dBmV (<-70 dBm) with 0 dB RF
attenuation.
Opt. 50 and 75: <-21 dBmV (<70 dBm)
(sweep above 350 MHz).
<+29 dBmV, typical (–20 dBm) (sweep
below 90 MHz).
0 Hz Spur – <+39 dBmV (<-10 dBm) refer-
ence to input with 0 dB RF attenuation.
INPUT RELATED
RF Input –
75
Ω
BNC with quick change to 75
Ω
type F
connector.
Opt. 50: 50
Ω
Type N connector.
VSWR –
With RF Attenuation >10 dB: 1.5:1 maxi-
mum to 1 GHz.
With 0 dB RF Attenuation: 2:1 maximum to
1 GHz.
Maximum Safe Input – +70 dBmV (0.1 W
or 2.2 V) continuous peak with 100 VDC
blocking capacitor.
1 dB Compression Point – >+34 dBmV
(–15 dBm) with 0 RF attenuation and 1st
mixer at +19 dBmV (–30 dBm).
SWEEP RELATED
Sweep Selections – Normal, single sweep,
and manual scan.
-60
-55
-50
-45
-40
-35
-65
MEAS
LIM
(dBc)
-20 -15 -10 -5 0 5 10 15 20 25 30 35 40 45 50 55
Input Level dBmV
Digital Signal CTB Measurement Range Limit For 2 dB Accuracy
To 500 MHz, using preselector.
500 MHz to 1000 MHz, using
To 500 MHz, in 60 channel flat system dominated
by analog signals 10 dB stronger than average
power of channel under test.
500 MHz to 1000 MHz, in 60 channel flat system
dominated by analog signals 10 dB stronger than
average power of channel under test.
Figure 7.
-50
-45
-40
-35
-30
-25
-55
MEAS
LIM
(dBc)
-20 -15 -10 -5 0 5 10 15 20 25 30 35 40 45 50 55
Input Level dBmV
Digital Signal CSO Measurement Range Limit For 2 dB Accuracy
-60
To 500 MHz, using preselector.
500 MHz to 1000 MHz, using
To 500 MHz, in 60 channel flat system dominated
by analog signals 10 dB stronger than average
power of channel under test.
500 MHz to 1000 MHz, in 60 channel flat system
dominated by analog signals 10 dB stronger than
average power of channel under test.
Figure 8.