# Agilent 8757D Scalar Network Analyzer, 10 MHz to 110 GHz (Standard) (Pre-Owned) # Agilent 8757D Scalar Network Analyzer, 10 MHz to 110 GHz (Standard) (Pre-Owned) ## Key Features At A Glance - Frequency coverage from 10 MHz to 110 GHz with compatible detectors and directional bridges - Four independent display channels with three standard detector inputs (optional fourth input available) - +16 to -60 dBm dynamic range with AC/DC detection modes - Optional internal 50 MHz power calibrator for absolute power accuracy with 85037 series precision detectors - Selectable measurement resolution from 101 to 1601 points per trace - GPIB programmable per IEEE 488-1978 with dedicated system interface for swept source, plotter, and printer control - Limit line testing on channels 1 and 2 with up to 12 segments for pass/fail decisions - Adaptive normalization with cursor search functions (max, min, n dB, bandwidth) The Agilent 8757D is a scalar network analyzer covering 10 MHz to 110 GHz when paired with compatible detectors and directional bridges. The instrument processes signals from Agilent 85037 series precision detectors, 85025 and 85026 series detectors, and 85027 series directional bridges for logarithmic display in single channel or ratio mode. Four independent display channels and three standard detector inputs (with an optional fourth) provide flexibility for transmission and reflection measurements across a wide dynamic range. The 8757D is used for accurate measurement of transmission and reflection characteristics in scalar network analysis applications. The datasheet specifies amplifier measurements (gain, gain compression, return loss, SWR), filter characterization, frequency-translating device measurements, and voltage-controlled device measurements. With the optional internal power calibrator and 85037 series precision detectors, the instrument supports absolute power measurements in dBm. The system interface enables coordinated operation with Agilent PSG signal generators (Option 007), 8360 series synthesized sweepers, and 8370 series synthesized sweepers. ## Brand Heritage Hewlett-Packard's test and measurement business was spun out as Agilent Technologies in 1999, and the electronic measurement portion of Agilent then became Keysight Technologies in 2014. Instruments originally branded HP, then Agilent, and now Keysight share this continuous engineering lineage. The 8757D was introduced under the Agilent brand following the 1999 spin-off. ## Compare Other Models in This Series The Agilent 8757D scalar network analyzer is offered in four configurations distinguished by the inclusion of a fourth detector input and/or the internal 50 MHz power calibrator. All configurations share the same core measurement architecture: four display channels, GPIB programmability, the dedicated system interface for source and peripheral control, and compatibility with the full range of Agilent 85025, 85026, 85027, and 85037 series accessories. Selection between the four configurations is driven by two questions: whether a fourth detector input is needed for the measurement setup, and whether the internal power calibrator is required to achieve the corrected absolute power accuracy specifications of the 85037 series precision detectors. Each pre-owned 8757D configuration listed below is its own dedicated product page with condition-matched pricing and availability. Configurations 001, 002, and 012 add the indicated options to the standard 700 base configuration. The 8757D-700 is the standard four-channel scalar network analyzer with three detector inputs. The 8757D-001 adds a fourth detector input for measurement setups that require simultaneous monitoring of an additional signal path. The 8757D-002 adds the internal 50 MHz power calibrator, which is required to achieve the corrected dynamic accuracy and absolute accuracy specifications of the 85037A and 85037B precision detectors (per the datasheet's Precision Detector Summary). The 8757D-012 combines both options, providing the fourth detector input and the internal power calibrator in a single unit. The comparison table below summarizes the configurations across the dimensions that differentiate them. Model Configuration Detector Inputs Internal Power Calibrator **8757D** Standard 3 No Additional differences in specifications beyond the few shown above are not listed here — see each model's full specifications below. ## Product Core & Specifications Specification Value Display Display Channels Four independent Horizontal Resolution (1 trace) 101, 201, 401, 801, 1601 points Horizontal Resolution (2 traces) 101, 201, 401, 801 points Horizontal Resolution (3, 4 traces) 101, 201, 401 points Color Settings Up to 8 operator-selectable colors Display Modes Log Magnitude (dBm) — Scale Resolution 0.1 to 20 dB/div (1/2/5 sequence) Log Magnitude (dBm) — Display Range −80 to +80 dBm Log Magnitude (dBm) — Vertical Resolution 0.003 dB (0.01 dB for display cursor) Log Magnitude (dB) — Scale Resolution 0.1 to 20 dB/div (1/2/5 sequence) Log Magnitude (dB) — Display Range −90 to +90 dB Log Magnitude (dB) — Vertical Resolution 0.006 dB (0.01 dB for display cursor) Normalized Ratio — Scale Resolution 0.1 to 20 dB/div (1/2/5 sequence) Normalized Ratio — Display Range −180 to +180 dB Normalized Ratio — Vertical Resolution 0.01 dB SWR — Scale Resolution 0.02 to 10 units/div (1/2/4 sequence) SWR — Display Range 1.0 to 37.0 SWR — Vertical Resolution 0.01 at 1, 0.1 at 10, 0.27 at 30 AUX Voltage — Scale Resolution 0.025 to 5 V/div (1/2.5/5 sequence) AUX Voltage — Display Range −10 to +10 V AUX Voltage — Vertical Resolution 0.001 V AUX Voltage — Typical Maximum Error 60 mV Sweep Time (minimum, log magnitude format) 101 points / 1 trace 40 ms 201 points / 1 trace 50 ms 401 points / 1 trace 100 ms 801 points / 1 trace 200 ms 1601 points / 1 trace 400 ms Averaging & Smoothing Averaging 2, 4, 8, 16, 32, 64, 128, or 256 successive traces Smoothing Aperture 0.1% to 20% of trace width Limit Lines Segments Up to 12 (flat or sloped lines or single points) Availability Channels 1 and 2 only, traces with 401 points or fewer Storage Save/recall registers 1 through 4 Save/Recall Registers Total Registers 9 complete front panel states Registers 1–4 Instrument state plus memory traces for channels 1 and 2 Registers 5–9 Instrument state only Modulation Requirements (AC Mode) Square-Wave AM Frequency 27,778 Hz ±20 Hz On/Off Ratio ≥30 dB Symmetry 45% to 55% Rear Panel Connectors Sweep Voltage Input 0 to 10 volts Blanked Voltage (Pos z blank) +5 V typical Unblanked Voltage 0 V typical Marker Voltage −4 V typical Active Marker Voltage −8 V typical Modulator Drive Frequency 27,778 Hz ±12 Hz Modulator Drive Symmetry 50% ±1% ADC In Range −10 to +10 V Control 1 and Control 2 TTL open-collector digital output Video Outputs LCD Monitor Output VGA compatible CRT Monitor Output RGB BNC inputs (sync on green), 75 ohm input impedance, 26.5 kHz horizontal scan rate, 60 Hz vertical refresh rate, 1 V p-p GPIB Standards IEEE 488-1978, IEC-625 Interface Function Codes SH1, AH1, T6, TE0, L4, LE0, SR1, RL1, PP0, DC1, DT0, C0, E1 Transfer Formats ASCII strings or 16-bit integers Transfer Speed (ASCII, 401-point trace) 500 ms typical Transfer Speed (ASCII, single point) 10 ms typical Transfer Speed (Binary, 401-point trace) 30 ms typical Transfer Speed (Binary, single point) 7 ms typical General Operating Temperature 0 to 55 °C Storage Temperature −40 to 75 °C Power Requirements 48 to 66 Hz, 100/120/220/240 V ±10%, typically 155 VA Dimensions (H × W × D) 178 × 425 × 482 mm (7.0 × 16.75 × 19.0 in) Net Weight 22 kg (48 lb) Shipping Weight 28 kg (61.5 lb) Power Calibrator (Option 002 only) Frequency 50 MHz ±0.2 MHz Output Power Range +20 to −50 dBm Accuracy at 0 dBm ±0.05 dB Linearity (+20 to +10 dBm) ±0.08 dB Linearity (+10 to −30 dBm) ±0.04 dB Linearity (−30 to −50 dBm) ±0.06 dB SWR ≤1.05 Modes of Operation DC Mode (unmodulated); AC Mode (modulated at 27,778 Hz ±12 Hz) Connector Type-N (f) **Important:** Maximum detector input power: +20 dBm (100 mW). Maximum detector input voltage: 10 VDC.**Important:** Detectors and directional bridges are required for measurements and are not included with the base instrument; appropriate 85037 series precision detectors, 85025/85026 series detectors, or 85027 series directional bridges must be ordered separately for the desired frequency range and connector type.**Important:** The 11665B modulator is no longer available and is only necessary when using the 8340/8341 series synthesizer; the 8360 and 8370 synthesized sweepers do not require an external modulator.**Important:** Agilent no longer offers Option 802 (the HP 9122C disk drive). 8757D-compatible disk drives are available from third-party suppliers (Saaya, Inc. in the U.S.; ISA Company, Ltd. elsewhere).**Important:** To use currently available printers, a GPIB-to-parallel-port adapter is required (available from Intelligent Interfaces).Recommended pairing: the 8757D operates with Agilent 85037 series precision detectors, 85025/85026 series detectors, and 85027 series directional bridges as listed in the datasheet. For source control via the system interface, the datasheet names Agilent PSG signal generators (Option 007), 8360 series, and 8370 series synthesized sweepers. ## 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 - 1120.0 USD - **Vendor:** Agilent - **Type:** Scalar Network Analyzer - **Tags:** Agilent, Agilent Keysight, Analyzers, Manufacturers, Network, product_manual_group_1, Product_used ## Variants | Variant | Price | Available | |---------|-------|-----------| | None | 0.00 USD | In stock | | NIST Traceable | 560.00 USD | In stock | | NIST Traceable with Full Data | 840.00 USD | In stock | | ISO IEC 17025 Accredited | 1120.00 USD | In stock | ## Images - Agilent 8757D Scalar Network Analyzer, 10 MHz to 110 GHz (Standard) (Pre-Owned) --- > Source: [ValueTronics](https://valuetronics.com/products/8757d-agilent-network-analyzer-used) > Updated: 2026-05-30