The PNG7000A Series instruments generate white Gaussian noise and provide a summing input to control signal-to-noise (SNR) or carrier-to-noise (CNR) for bit-error-ratio (BER) testing. The output can also be used as a source for Jitter applications. A key feature of this instrument is its low distortion signal path that sums the user-supplied signal with the internal precision white noise source. Standard units can be modified for specific customer requirements. Please consult the factory for pricing and availability of these requests.
Quick Features
- Type N, BNC, or SMA connectors available
- 127 dB attenuation in 1 dB, or optional 0.1 dB steps*
- Summing input for CNR, or Eb/No measurements
- 0 dB signal path insertion loss
- +/- 0.25 dB per 40 MHz noise band smoothing
- SP6T switch allows four internal/external filter paths
- Standard Ethernet, or optional GPIB remote control
- Optional rear panel connectors
* Units above 2 GHz have 79.9 dB attenuation
| Description | Specification | Notes |
| CW Operating Frequency Range | 1000 MHz to 2000 MHz | Internal Synthesizer |
| Noise and Pulse Interference Center Frequences |
1575.42 MHz (L1) and optionally 1227.60 MHz (L2) or 1176.45 MHz(L5) |
Tunable over +/-20MHz for each Band |
| Arbitrary Signal (AM, Noise, Pulse) 3dB Bandwidth |
0 to 40 MHz | |
| Frequency Stability | +/- 0.5 ppm | Over 0 to 55 degrees C |
| Minimum Frequency Resolution | 20 kHz | |
| Phase Noise | -46 dBc/Hz at +/- 20 kHz Offset -122 dBc/Hz at +/- 100 kHz Offset |
Maximum All Modes Typical CW Mode |
| Typical Spurious Output | -52 dBc at <+/- 21.5 MHz Offset -80 dBc at >+/- 21.5 MHz Offset |
All Modes CW Mode |
| Maximum Spurious Output in CW Mode | -122.5 dBc between 1564.42 MHz and 1586.42 MHz |
For CW signal at < 1525 MHz or > 1610 MHz |
| Available Output Power | +10 dBm at 1000 to 2000 MHz +21 dBm at 1555 to 1595 MHz Combiner |
After internal GPS plus Interference |
| Lowest Output Power | -126.5 dBm -170.5 dBm/Hz |
All Modes Noise Mode |
| Output Power Resolution | 0.1 dB | |
| Interference/Signal Ratios | Up to 155 dB | Relative to -134.5 dBm GPS Signal |
| Minimum Pulse On/Off Ratio | 164.5 dB | In Pulse Mode, 1575 to 1595 MHz, > +20 dBm. |
| Pulse Duty Cycle | 0 to 100% | |
| Pulse Width Resolution | 6.67 ns | |
| Pulse Repetition Rates | 5 Hz to 75 MHz | |
| Maximum CW, Noise | 41.25 dBm/MHz | Isolation to GPS Input |
| Part Number | Description | |
| GPS7500 | Noise & Interference Generator for GPS Testing at L1 Band, 1575.42 MHz +/- 20 MHz | |
| GPSoptL2 | Additional independently programmable Noise and Interference Generator for L2 band, 1226.20 MHz +/- 20 MHz |
|
| GPSoptL5 | Additional independently programmable Noise and Interference Generator for L5 band, 1176.45 MHz +/- 20 MHz |
|
| GPSoptREF | GPS Signal Splitter with Isolated GPS Output for Reference Receiver |
