Atec JDSU-JD745A - Manual (Page 3)

3
JD745A CELLADVISOR BASE STATION ANALYZER
Spurious
Inherent residual response
Input terminated, 0 dB attenuation, preamplifier off, RBW at 10 kHz
20 MHz to 3 GHz
–90 dBm (nominal)
>3 GHz to 4 GHz –85 dBm (nominal)
Exceptions <–80 dBm @ 311.94 MHz
<–84 dBm @ 415.92 MHz
<–85 dBm @ 519.90, 1599.00, and 2497.80 MHz
Input related spurious <–70 dBc (nominal)
Dynamic Range
2/3 (TOI-DANL) in 1 Hz RBW >95 dB
Sweep Time
Range 80 ms to 1000 s
24 µs to 200 s
Span = 0 Hz (zero span)
Sweep mode Continuous, single
Gated Sweep
Trigger source External, video, and GPS
Gate length 1 µs to 100 ms
Gate delay 0 to 100 ms
Trigger
Trigger source Free run, video, external
Trigger delay
Range
Resolution
0 to 200 s
6 µs
Measurements*
Channel power
Occupied bandwidth
Spectrum emission mask
Adjacent channel power
Spurious emissions
Field strength
AM/FM audio demodulation
Route map
PIM detect
Dual spectrum
* CW signal generator (Option 003) can be set up simultaneously.
Cable and Antenna Analyzer (standard)
Frequency
Range 5 MHz to 4 GHz
Resolution 10 kHz
Accuracy ±25 ppm
Data Points
126, 251, 501, 1001
Measurement speed 1.65 ms/point (nominal)
Measurement Accuracy
Corrected directivity 40 dB (typical)
Reflection uncertainty ±(0.3 + |20log (1+10 -EP/20 )|) (typical)
EP = directivity – measured return loss
Output Power
High 0 dBm (typical)
Low –30 dBm (typical)
Dynamic Range
Reflection 60 dB
Maximum Input Level
Average continuous power +25 dBm (nominal)
DC voltage ±50 VDC
Interference immunity
On channel
On frequency
+17 dBm at >1.4 MHz from carrier
frequency (nominal)
0 dBm within ±10 kHz from the car-
rier frequency (nominal)
Measurements
Reflection (VSWR)
VSWR range
Return loss range
Resolution
1 to 65
0 to 60 dB
0.01
Distance to Fault (DTF)
Vertical VSWR range
Vertical return loss range
Vertical resolution
Horizontal range
Horizontal resolution
1 to 65
1 to 60 dB
0.01
0 to (# of data points – 1) x Horizontal Resolution
Maximum = 1500 m (4921 ft)
(1.5x10
8 ) x (V
P
)/(delta) x (0.95)
V
P
= propagation velocity
Delta = stop freq. – start freq. (Hz)
Cable Loss (1-port)
Range
Resolution
0 to 30 dB
0.01 dB
1-port Phase
Range
Resolution
–180° to +180°
0.01°
Smith Chart
Resolution
0.01