TrueTime Symmetricom XL-DC 86-357-24 Quad 10MHz Card Low Phase Noise BNC Output [Refurbished]

Removed from a working XL-DC chassis with an OCXO or Rubidium oscillator installed. All outputs were checked for a good 10MHz signal using a frequency counter - see below. I cannot guarantee that this card will work in receivers other than the XL-DC (OCXO or Rubidium) type. This is a multiple item listing so there will me minor, non-performance affecting cosmetic variations between units.

Description

This card provides four isolated, 50 ohm 10MHz frequency output signals with exceptional spectral purity. Isolation from the receiver’s internal digital signal noise and power supply noise enables high-performance phase noise and spurious noise characteristics as the on-module low noise oscillator source. The low phase noise option requires an oscillator upgrade to the XL-DC system, such as an OCXO, High Stability OCXO, Rubidium or High Stability Rubidium.

SPECIFICATIONS: LOW PHASE NOISE 10 MHz OUTPUTS (87-8009-10)

• Provides four 10 MHz frequency output signals
• Signal type: Analog sine wave
• Synchronization: Phase locked to the clock 10 MHz
• Accuracy: Function of input synchronization source (GPS, IRIG, 1PPS, Have Quick)
• Amplitude: +13dBm (±1dBm)
• Output impedance: 50O
• Quantity: 4
• Connector: BNC female
• Option Slots: 1
• Harmonic distortion: –30dBc (2nd harmonic)
• Spurious: –90dBc (10 Hz - 10 kHz SSB)
• Isolation: –70dBc
• Phase noise
  –85 dBc/Hz @ 1 Hz offset
  –115 dBc/Hz @ 10 Hz offset
  –140 dBc/Hz @ 100 Hz offset
  –145 dBc/Hz @ 1 kHz offset
  –150 dBc/Hz @ 10 kHz offset

Frequency counter not included