# Advantest R3765CH 40 MHz to 3.8 GHz Network Analyzer, Type C with Built-In S-Parameter Test Set (Pre-Owned) # Advantest R3765CH 40 MHz to 3.8 GHz Network Analyzer, Type C with Built-In S-Parameter Test Set (Pre-Owned) ## Key Features At A Glance - Measurement frequency range from 40 MHz to 3.8 GHz across the R3764H/3765H Series - Three configuration types per model: Type A basic, Type B with built-in SWR bridge, Type C with built-in S-parameter test set - High sweep speed of 0.15 ms/point with normalized calibration and 0.25 ms/point with 2-port full calibration - 4 channels, 8 traces, simultaneous measurement of 2 devices on the R3765H - 100 dB wide dynamic range with 10 Hz resolution bandwidth for high-attenuation device testing - Built-in BASIC controller, GPIB (IEEE-488), RS-232, parallel I/O, and barcode input for ATE integration - Available calibration functions including normalized, 1-port, 2-port, and DUPLEX/TRIPLEX/3PORT FULLCAL routines - MS-DOS compatible FDD (720 KB, 1.2 MB, 1.44 MB) and SCPI command support for program portability The Advantest R3765H is a vector network analyzer covering 40 MHz to 3.8 GHz, part of the R3764H/3765H Series of instruments designed to measure amplitude, phase, group delay, and impedance of electronic devices with precision at high speed. The R3765H provides a 7.8 inch TFT color LCD with 640 x 480 resolution, supporting log/linear Cartesian coordinate, polar coordinate, and Smith chart display modes, making it suited for production engineering use as well as bench characterization. Within the R3764H/3765H Series, three model variants are available to match different application requirements. Type A is the basic model with a built-in signal separator and two inputs that supports simultaneous measurement on two devices. Type B incorporates a power splitter and SWR bridge, allowing transmission and reflection characteristics to be measured efficiently and supporting 1-port calibration for higher-accuracy measurement. Type C incorporates an S-parameter test set with two SWR bridges, a power splitter, and a semiconductor switch for forward/reverse switching, measuring S11, S21, S22, and S12 in auto-reversing mode. ValueTronics International stocks, inspects, and tests RF and microwave instruments including the R3764H/3765H Series at our 20,000 sq ft secure warehouse at 1675 Cambridge Drive, Elgin, Illinois. Every used network analyzer that passes through our facility is bench-verified by our technicians against the manufacturer's published specifications before it leaves our shipping floor, and condition reports document what was found rather than what was assumed. This is the dimension of accountability that drop-shippers and pass-through brokers cannot offer on a precision instrument like a vector network analyzer. ## Brand Heritage Advantest Corporation is a Japanese test and measurement company that has manufactured semiconductor and component test instruments since 1954 and has operated under the Advantest name since 1985. The R3764H/3765H Series network analyzers are part of Advantest's long-standing instrument catalog and remain in active service in production-test environments worldwide. ## Compare Other Models in This Series The R3764H/3765H Series is positioned as two parallel product groups built on a shared 40 MHz to 3.8 GHz measurement architecture. The R3764H is intended for system use and pairs a simple structure with a fluorescent character display tube, making it suited to production-line integration. The R3765H is intended for stand-alone bench use and provides a 7.8 inch TFT color LCD that supports production or engineering applications including Smith chart and polar coordinate displays not available on the R3764H. Each of the two series is available in three configuration types — Type A basic, Type B with built-in SWR bridge, and Type C with built-in S-parameter test set — allowing the buyer to select the test-port hardware that fits the device-under-test geometry without changing the underlying measurement platform. Each pre-owned model below is its own dedicated product page with condition-matched pricing. Specifications, accessories, and supported calibration routines are shared across the series and described above; the per-model pages capture the specific test-port hardware of each configuration. The R3765H provides the 7.8 inch TFT color LCD with 640 x 480 resolution and supports 4-channel/8-trace simultaneous display with separated or overlapped formats, Smith chart and polar coordinate display modes (R3765H only per the datasheet), and the 10-marker-per-channel function with limit-line PASS/FAIL judgment on rectangular, polar, and Smith chart displays. The primary family differences are display, test-port hardware, and output level. The R3764H uses a fluorescent character display tube with a 256 x 64 dot resolution suited to character readouts, while the R3765H uses a 7.8 inch TFT color LCD with 640 x 480 dot resolution supporting Smith chart and polar coordinate display formats. Output level varies by configuration type: Type A delivers +17 to -8 dBm, Type B delivers +7 to -18 dBm, and Type C delivers +10 to -15 dBm across the 40 MHz to 3.8 GHz range. Calibration and measurement coverage also differs by type. Type A supports A/R, B/R measurements and normalized calibration; Type B adds transmission, reflection, and transmission-and-reflection measurements with 1-port calibration; Type C is the only configuration that supports the full S-parameter set (S11, S21, S22, S12) with 2-port calibration and is also the only type with ±30 VDC, 0.5 A port bias capability. Crosstalk specifications also vary between Types A/B (90 dB) and Type C (90 dB to 2.6 GHz, 85 dB above). Model Frequency Range Display Model Type **R3765CH** 40 MHz to 3.8 GHz 7.8 inch TFT color LCD (640 x 480 dots) Type C: Built-In S-Parameter Test Set R3764H 40 MHz to 3.8 GHz Fluorescent character display (256 x 64 dots) Type A: Basic Model R3764BH 40 MHz to 3.8 GHz Fluorescent character display (256 x 64 dots) Type B: Built-In SWR Bridge R3764CH 40 MHz to 3.8 GHz Fluorescent character display (256 x 64 dots) Type C: Built-In S-Parameter Test Set Additional differences in specifications beyond the few shown above are not listed here — see each model's full specifications below. ## Product Core & Specifications Category Specification Value Measurement Functions Sweep channel 2 channels (CH 1 and CH 2) Display channel 4 channels (CH 1, CH 2, CH 3, and CH 4) Trace 2 traces/channel Display parameter (Type A) A/R, B/R Display parameter (Type B) Transmission Reflection; Transmission & reflection Display parameter (Type C) S11, S21, S22, S12; S21 & S11; S12 & S22 Format - Rectangular coordinates Log/linear amplitude, phase, and group delay or real part + imaginary part of complex parameter |Z|, R, X (at measurement with impedance conversion) |Y|, G, B (at measurement with admittance conversion) Phase extension display function Smith chart (R3765H only) Marker reading Log/linear amplitude, phase, real part + imaginary part, R+jX, G+jB Polar coordinates (R3765H only) Marker reading Log/linear amplitude, phase, real part + imaginary part Receiver Characteristics Resolution bandwidth 10 kHz to 10 Hz (in 1 or 3 steps) Amplitude resolution 0.001 dB Dynamic accuracy (0 to -10 dB) ± 0.3 dB (40 MHz ≤ f ≤ 3.8 GHz) Dynamic accuracy (-10 to -20 dB) ± 0.05 dB (40 MHz ≤ f ≤ 3.8 GHz) Dynamic accuracy (-20 to -50 dB) ± 0.05 dB Dynamic accuracy (-50 to -60 dB) ± 0.10 dB Dynamic accuracy (-60 to -70 dB) ± 0.15 dB Dynamic accuracy (-70 to -80 dB) ± 0.40 dB Dynamic accuracy (-80 to -90 dB) ± 1.00 dB Frequency / Phase Characteristics Frequency characteristics ± 1.0 dB (-10 dBm, 25°C ± 5°C) Phase measurement range ± 180° (Display for ± 180° or more is possible by means of display extension function) Phase resolution 0.01° Phase Dynamic Accuracy 0 to -10 dB ± 5.0° \-10 to -20 dB ± 0.3° (40 MHz ≤ f ≤ 3.8 GHz) \-20 to -50 dB ± 0.3° \-50 to 60 dB ± 0.4° (40 MHz ≤ f ≤ 3.8 GHz) \-60 to -70 dB ± 1.5° \-70 to -80 dB ± 4.0° \-80 to -90 dB ± 8.0° Group Delay Time Characteristics Range 1 ps to 250 s (calculated as τ = Δφ / (360 × Δf)) Measurement range 1 ps Group delay time resolution Equal to Δf, can be set to Δ × 2% to Δ × 100% for frequency span with a resolution of Δ × 2% Aperture frequency accuracy A = 100 / (measurement points - 1); 360 × Aperture frequency (Hz) Signal Source - Measurement Frequency Range 40 MHz to 3.8 GHz Set resolution 1 Hz Measurement resolution ± 0.005 ppm Accuracy ± 20 ppm (25°C ± 5°C) Stability ± 5 ppm/day (25°C ± 5°C) Output Level (40 MHz to 3.8 GHz) Range (Type A) +17 to -8 dBm Range (Type B) +7 to -18 dBm Range (Type C) +10 to -15 dBm Resolution 0.01 dB Accuracy ± 0.5 dB (50 MHz, 0dBm, 25°C ± 5°C) Flatness 2.0 dBp-p (25°C ± 5°C). For type C, at test port Linearity (25°C ± 5°C) Type A: ± 0.4 dB +12 to -3 dBm (with respect to +7 dBm) Type A: ± 0.7 dB +7 to -8 dBm (with respect to +7 dBm) Type B: ± 0.4 dB +2 to -13 dBm (with respect to -3 dBm) Type B: ± 0.7 dB +7 to -18 dBm (with respect to -3 dBm) Type C: ± 0.4 dB +5 to -10 dBm (with respect to 0 dBm) Type C: ± 0.7 dB +10 to -15 dBm (with respect to 0 dBm) Signal Purity Harmonic distortion ≤ 20 dBc (at maximum output, 40 MHz to 3.8 GHz) Non-harmonic spurious ≤ 25 dBc (at maximum output, 40 MHz to 3.8 GHz) Phase noise \-85 dBc to 20 log (f/40 MHz). 10 kHz offset, 1 Hz bandwidth, at maximum output Sweep Function Sweep parameter Frequency, signal level Maximum sweep range (Frequency) 40 MHz to 3.8 GHz Sweep type Linear/log frequency sweep, partial and arbitrary frequency sweep, level sweep and CW (single frequency) sweep Sweep time 0.15 ms/point (with normalized calibration); 0.25 ms/point (with 2-port full calibration) Measurement point 3, 6, 11, 21, 51, 101, 201, 301, 401, 601, 801, or 1201 points **Important:** Maximum input level: 0 dBm for Types A and B; +15 dBm for Type C at 40 MHz to 3.8 GHz. Input burning level: +21 dBm or ±30 VDC.**Important:** For 1-port calibration error correction, short/open/load calibration tools are required (not included with the base unit).**Important:** 2-port full calibration is supported only on Type C models (built-in S-parameter test set). Types A and B require external accessories to perform equivalent measurements.**Important:** Smith chart and polar coordinates display, and the Marker Function, are available on the R3765H series only.**Important:** Time domain analysis is listed as an option and is not included as a standard function.Recommended pairing: when measuring duplexers, couplers, or other multiple-port devices, connect the R3765H to an Advantest R396X series product to enable DUPLEX 2PORT FULLCAL, TRIPLEX 2PORT FULLCAL, and 3PORT FULLCAL calibration routines as described in the datasheet. ## About this used unit - Warranty included - Functional verification included - Standard Calibration Upgrade Options: No Calibration Required, NIST Traceable, Z540.1 or ISO 17025 with Data, Z540.3 Guardbanding with Data. - Note that unnecessary accessories may not be included (contact Test Architect to confirm). **Please review the Manufacturer's Data Sheet to verify published specifications. Feedback on this webpage is always welcome — please reach out to your Test Architect at any time for questions or concerns. Thank you, we truly appreciate you being our customer.** ## Details - **Price:** 0.0 USD - 600.0 USD - **Vendor:** Advantest - **Type:** Network Analyzer - **Tags:** Advantest, Analyzers, Manufacturers, Network, product_manual_group_1, Product_used ## Variants | Variant | Price | Available | |---------|-------|-----------| | None | 0.00 USD | In stock | | NIST Traceable | 525.00 USD | In stock | | NIST Traceable with Full Data | 562.50 USD | In stock | | ISO IEC 17025 Accredited | 600.00 USD | In stock | ## Images - Advantest R3765CH 40 MHz to 3.8 GHz Network Analyzer, Type C with Built-In S-Parameter Test Set (Pre-Owned) --- > Source: [ValueTronics](https://valuetronics.com/products/r3765ch-advantest-network-analyzer-used) > Updated: 2026-05-30