HP 8753ET manual Test set specifications for Option, HP 85046A/B S-parameter test sets

Test set specifications for Option 011

HP 85046A/B S-parameter test sets

The HP 85046A/B S-parameter test sets provide the capability to measure reflection and transmission char- acteristics (including S-parameters) of two-port devices in either direction with a single connection. The test sets are controlled from the HP 8753ES Option 011 and include a programmable step attenua- tor. The frequency range of the HP 85046A 50-ohm test set is 300 kHz to 3 GHz. The HP 85046A has preci- sion 7-mm connectors. The frequency range of the HP 85046B 75-ohm test set is 300 kHz to 2 GHz. The HP 85046B has 75-ohm type-N(f) connectors. Both connectors can be adapted to other interfaces with the appropriate precision adapters.

HP 85046A/B Specifications

Note: Specifications that apply only to the HP 85046 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
Typical tracking	30 dB to Fmax1

Transmission magnitude, phase2

0.3	MHz to 2.0 MHz	±1.5 dB, ±20˚
2.0	MHz to Fmax	±1.5 dB, ±10˚
Reflection magnitude, phase2
0.3	MHz to 2.0 MHz	±1.5 dB, ±25˚
2.0	MHz to Fmax	±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 Fmax	16 dB
Nominal insertion loss		14 dB + 0.5 dB/GHz
Input to test port
		(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 dB3
Max. operating level		+20 dBm
Damage level		+30 dBm
RF attenuator range		70 dB, 10 dB steps
DC bias range		±30 VDC, 200 mA4
		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 HP 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 cor- rection. Option 009 replaces the transfer switch with a mechanical switch. This provides about 1.5 dB more power at the test port, but does not allow continuous switching, so the user must initiate updates of all four S-parameters for full two-port error correction. Also, the mechanical switch has relays that will wear out faster than the solid-state switch. Approximate lifetime of the mechanical switch is 1 million cycles.

HP 85046A schematic

1.Fmax 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.
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