| ||||
|
HP 85990A Multicarrier Signal Generator | |||
![[ Summary ]](../Graphics/tab-summary.gif)
![[ Features ]](../Graphics/tab-features.gif)
![[ Specifications ]](../Graphics/tab-specs.gif)
![[ Ordering ]](../Graphics/tab-ordering.gif)
![[ Assistance ]](../Graphics/tab-assistance.gif)
Whether you're manufacturing broadband devices, or verifying operation of your broadband network, you need to evaluate its electrical performance under realistic signal conditions. The HP 85990A multicarrier signal generator can quickly and easily simulate a broadband headend to verify electrical specifications and distortion performance. The multicarrier signal generator provides up to 180 clean, stable, noise-free carriers from 5 to 1100 MHz for convenient testing of distortion performance of broadband components and communication systems. The frequencies of these modules are customer specified, as is the mainframe capacity. For systems larger than 129 carriers, two cabinets with interconnecting cables are used. The HP 85990A is particularly well suited to making CTB, CSO, and cross modulation measurements for cable television component manufacturers, headend installers, and operators.
Click here for a demonstration of the HP 85990A instrument remote control software.
Warranted instrument performance for an ambient operating temperature of 18 to 30°C (unless otherwise noted). Level Stability After 30-Minute Warm-up: ±1.0 dB After 4-Hour Warm-up: ±0.2 dB Spurious Responses(>=16 kHz offset from carrier-under-test) Carrier-Under-Test ON: <-80 dBc Carrier-Under-Test OFF: <-100 dBc SSB Noise Level (@ fc ±fmod): -103 dBc/Hz or better Frequency Accuracy Internal PLL Reference: N/A (adjusted through software) Common PLL Reference: ±5 ppm (manual adjustment in main unit) Frequency Adjustment Range fout <70 MHz: ±50 ppm fout >70 MHz: ±5 kHz
Characteristics
Application information that is not warranted. System Size: 1 to 180 channels Output Frequency: 5 to 1100 MHz Any channel according to PAL, SECAM, or NTSC video carrier requirements Maximum System Output Level: 90 to 112 dBµv (typical) Residual FM: ±200 Hz (typical) Output Output Impedance Standard: 75 ohm Opt 004: 50 ohm Output Return Loss: >10 dB RF Output Connector: Type-N (female) Modulation Modulation Modes Non-Synchronous: Internal Synchronous: Common Internal Common External Modulation Depth: >99.4% Modulation Signal (50% or 19% duty cycle)¹ PAL: 15.625 kHz ±2 Hz Square wave NTSC: 15.750 kHz ±2 Hz Square wave Modulation I/O Port Input Level: TTL Frequency Range: 10 to 25 kHz Input Impedance: 100 k ohms Output Level: 3 Volts Output Impedance: 100 k ohms Connector: BNC (female) Attenuators Module Attenuator Range: 0 to 15 dB Step Size: 0.1 dB Step-to-Step Accuracy: ±0.2 dB at integer values of dB Overall Accuracy: ±0.5 dB Main Attenuator Range: 0 to 63.0 dB Step Size: 1.0 dB Attenuator Accuracy 5 to 100 MHz ±0.3 dB 101 to 500 MHz ±0.5 dB 501 to 1100 MHz ±0.7 dB ¹Other duty cycles available upon request.
General Information
Communication Interfaces RS-232 Communication Format: 9600 baud, 8 bit, no parity, 1 stop bit Connector: 9-pin D-subminiature GPIB (IEEE 488) Capabilities: SH1, AH1, T6, L4, SR1, RL0, PP0, DC1, DT0, E1 Connector: 24 pin GPIB Power Requirements Line Voltage: 90 to 140 Vac/180 to 264 Vac Frequency: 50/60 Hz Power Consumption 59 Channel: 400 W maximum 89 Channel: 600 W maximum 129 Channel: 865 W maximum Size Width: 560 mm Depth: 510 mm Height: 2M maximum for a single cabinet Weight: 215 Kg maximum for a single cabinet Shipping Temperature: -30 to 65°C Relative Humidity: 0% to 90% R.H. @ 65°C (non-condensing) Altitude: 0 to 12,500 meters
HP 85990A Multicarrier Signal Generator Opt 001 Individual HP 85990A carrier module Opt 002 Modulation format (NTSC standard, PAL with option) Opt 004 50 ohm Output Impedance (75 ohm standard) Opt 005 Customer-specified Secondary Duty Cycle (18% standard) Opt 006 Spare/Retrofit Carrier Module (# of spare modules) Opt 059 59-Channel Master Mainframe Opt 060 60-Channel Slave Mainframe Opt 089 89-Channel Master Mainframe Opt 090 90-Channel Slave Mainframe Opt 129 129-Channel Master Mainframe Opt 130 130-Channel Slave Mainframe Configuration The following product features must be specified:HP 85990A Multicarrier Signal Generator, Product Overview1. The mainframe size and type. Three master and slave configurations are offered as standard options. A master mainframe consists of a main unit that houses the power supply, main output attenuator, and CPU board; subframes (housing the carrier modules); and the output unit. Specifying a larger capacity allows expansion. Simply buy additional frequency modules to install in your existing mainframe as you need changes. Once a master mainframe is filled to its capacity, further system expansion requires a slave mainframe. A slave mainframe is controlled by the master mainframe and consists of a power supply and subframe units which hold the carrier modules. 2. The number of individual carrier modules required in your test application and their respective frequencies. The HP 85990A can be provided with up to 180 total channels, with 129 maximum in a single rack. The number of channels and the rack size chosen determine the list price of the source. 3. The required pulse modulation frequency. 15.75 kHz (NTSC) is standard. Option 002 specifies 15.625 kHz (PAL). 4. The HP 85990A features standard modulation duty cycles of 50% primary and 19% secondary. You may specify the secondary duty cycle. 5. A preferred output impedance. 75 ohms is standard. Option 004 specifies 50 ohms.
Other configurations or special options can be provided upon request.
| If you do not have the Adobe Acrobat Reader necessary for viewing this documentation, download your Free Acrobat Reader now. |
|
Trademarks:
Windows is a U.S. registered trademark of Microsoft Corporation.
To help you make the
right instrument choices
Page Updated: Tuesday July 01 17:43:00 UTC 1997