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Agilent 85046A/B S-Parameter Test Sets
The 85046A/B S-parameter test sets provide the
capability to measure reflection and transmission
characteristics (including S-parameters) of two-
port devices in either direction with a single
connection. The test sets are controlled from the
8753ES Option 011 and include a programmable
step attenuator. The frequency range of the 85046A
50-ohm test set is 300 kHz to 3 GHz. The 85046A
has precision 7-mm connectors. The frequency
range of the 85046B 75-ohm test set is 300 kHz to
2 GHz. The 85046B has 75-ohm type-N(f) connec-
tors. Both connectors can be adapted to other inter-
faces with the appropriate precision adapters.
Agilent 85046A/B Specifications
Note: Specifications that apply only to the 85046B
are indicated in parentheses.
Impedance 50 ohm (75 ohm)
Frequency range 300 kHz to 3 GHz
(300 kHz to 2 GHz)
Directivity 35 dB to 1.3 GHz
30 dB to F
max
1
Typical tracking
Transmission magnitude, phase
2
0.3 MHz to 2.0 MHz ±1.5 dB, ±20°
2.0 MHz to F
max
±1.5 dB, ±10°
Reflection magnitude, phase
2
0.3 MHz to 2.0 MHz ±1.5 dB, ±25°
2.0 MHz to F
max
±1.5 dB, ±10°
Effective source match
0.3 MHz to 2.0 MHz 14 dB
2.0 MHz to 1.3 GHz 20 dB (17 dB)
1.3 GHz to F
max
16 dB
Nominal insertion loss
Input to test port 14 dB + 0.5 dB/GHz
(19.5 dB + 1 dB/GHz)
Input to incident 18 dB + 1.5 dB/GHz
(18 dB + 1.5 dB/GHz)
Port 1, 2 to A, B 6.5 dB + 1.0 dB/GHz
(12 dB + 0.5 dB GHz)
Test set switch/repeatability
±0.03 dB; ±0.01 dB
3
Max. operating level +20 dBm
Damage level +30 dBm
RF attenuator range 70 dB, 10 dB steps
DC bias range ±30 VDC, 200 mA
4
500 mA max
DC bias connectors 50 ohm BNC (f)
Includes four 190 mm (7.5 in) type-N
cables and test set
interconnect cable.
Dimensions 90 mm H x 432 mm W
x 553 mm D
Weight 9.1 kg (20 lb)
A standard 85046A/B test set contains a solid-
state transfer switch, which allows continuous
switching of power from port 1 to port 2 for full
two-port error correction.
Test Set Specifications for Option 011
1. F
max
is the upper frequency limit of the associated test set.
2. Degrees, specified as deviation from linear phase.
3. Typical performance.
4. Some degradation of RF specifications may occur.
Agilent 85046A Schematic