Giga-tronics 8650A Series, Руководство по эксплуатации

Страница: 227 / 240

Power Sensors
Manual 31470, Rev. E, April 2001 B-11
B.2.3 Directional Bridges
The 80500 CW Directional Bridges are designed specifically for use with Giga-tronics power meters to
measure the Return Loss/SWR of a test device. Each bridge includes an EEPROM which has been
programmed with Identification Data for that bridge.
The Selection Guide in Table B-4 shows primary specifications. Additional specifications are:
Bridge Frequency Response:
Return loss measurements using the 8541/2 power meter can be
frequency compensated using the standard Open/Short supplied
with the bridge.
Insertion Loss:
6.5 dB, nominal, from input port to test port
Directional Bridge Linearity Plus
Zero Set & Noise vs. Input Power:
+27 dBm (0.5 W)
Weight: 80501: 340 g (12 oz)
80502: 340 g (12 oz)
80503: 198 g (7 oz)
80504: 198 g (7 oz)
Directional Bridge Accessories: An Open/Short is included for establishing the 0 dB return loss
reference during path calibration.
Dimensions: 80501: 76 x 50 x 28 mm (3 x 2 x 1 1/8 in)
80502: 76 x 50 x 28 mm (3 x 2 x 1 1/8 in)
80503: 19 x 38 x 29 mm (3/4 x 1 1/2 x 2 1/8 in)
80504: 19 x 38 x 29 mm (3/4 x 1 1/2 x 2 1/8 in)
Table B-4: Directional Bridge Selection Guide
Model
Freq. Range/
Power Range
Max.
Power
Power Linearity
4
(Frequency >
8
GHz)
Input
Test
Port
Directivity Wgt VSWR
Precision CW Return Loss Bridges
80501 10 MHz to 18 GHz
-35 to +20 dBm +27 dBm
(0.5W) -35 to +10 dBm
±
0.1 dB
+10 to +20 dBm
±
0.1 dB
±
0.005 dB/dB
Type N(f)
50
Ω
Type N(f)
50
Ω
38 dB 0.340 kg <1.17:0.01 - 8 GHz
<1.27:8 - 18 GHz
80502 10 MHz to 18 GHz
-35 to +20 dBm +27 dBm
(0.5 W) -35 to +10 dBm
±
0.1 dB
+10 to +20 dBm
±
0.1 dB
±
0.005 dB/dB
Type N(f)
50
Ω
APC-7(f)
50
Ω
40 dB 0.340 kg <1.13:0.01 - 8 GHz
<1.22:8 - 18 GHz
80503 10 MHz to
26.5 GHz
-35 to +20 dBm +27 dBm
(0.5 W) -35 to +10 dBm
±
0.1 dB
+10 to +20 dBm
±
0.1 dB
±
0.005 dB/dB
SMA(f)
50
Ω
SMA(f)
50
Ω
35 dB 0.340 kg <1.22:0.01 - 18 GHz
<1.27:8 - 26.5 GHz
80504 10 MHz to 40 GHz
-35 to +20 dBm +27 dBm
(0.5 W) -35 to +10 dBm
±
0.1 dB
+10 to +20 dBm
±
0.1 dB
±
0.005 dB/dB
Type K(f)
50
Ω
Type K(f)
50
Ω
30 dB 0.198 kg <1.35:0.01 - 26.5 GHz
<1.44:26.5 - 40 GHz
DIRECTIONAL BRIDGE MEASUREMENT ERROR
Power (dBm)
Measurement Error (dB)
.30
.25
.20
.15
.10
.05
0.00
20 15 10 5 -5 -10 -15 -20 -25 -30 -35 -40