6

Measurement capabilities

3dB cut-off frequency (S21),

Responsivity (S21),

Electrical reflection (S11 or S22),

Group Delay vs. frequency,

Insertion Loss (IL),

Transmission bandwidth,

all electrical S-parameter measurements.

Target test devices

Transmitter (E/O)

Receiver (O/E)

PIN diodes

Avalanche photodiodes (APD)

Receiver optical subassemblies (ROSA)

Optical (O/O)

Passive optical components

Optical fibers and filters

Optical transmission systems

Agilent N4373C Specifications

Measurement conditions

Network analyzer set to -8 dBm electrical output

power

Modulation frequency range from 10 MHz to 65 GHz

Number of averages: 1

100 Hz IFBW (“Reduce IF bandwidth at low frequency”

enabled) with modulation frequency step size 10 MHz

and measurement points on a 10 MHz raster (if not

differently stated).

Network analyzer set to “stepped sweep” – sweep

moves in discrete steps”

Port 2 of network analyzer configured in reverse

coupler configuration (“RCVB B in” to “CPLR THRU”,

“SOURCE OUT” to “CPLR ARM”)

After full two-port electrical calibration using an Elec-

tronic Calibration Module, Agilent N4694A, at constant

temperature (±1° C).

Modulation-bias optimization set to “every sweep”

Using the supplied flexible test port cables 1.85mm f m

(Part Number N4697-60200).

Measurement frequency grid equals electrical calibra-

tion grid.

Tested from Port 1 to Port 2.

DUT signal delay ≤ 0.1/IF-BW.

Specified temperature range: +20° C to +26° C.

After warm-up time of 90 minutes.

Using high quality electrical and optical connectors in

perfect condition.

Using internal laser source.