Stanford Research Systems FS725 Rubidium Frequency Standard

The Stanford Research Systems FS725 is a rubidium frequency standard designed for applications requiring frequency stability and low phase noise. It provides two 10 MHz and one 5 MHz sine wave outputs with phase noise specifications of less than -130 dBc/Hz at 10 Hz offset. The unit features 1 PPS input and output, an RS-232 interface for monitoring, and optional distribution modules for expanded output capacity. The FS725 is ideal for calibration labs, telecommunications, and synchronization tasks.

Keysight 58503B GPS Time/Frequency Receiver

Standard (ac power): 90 to 132 Vac or 198 to 264 Vac, automatically selected; 50 to 60 Hz
Option AWQ: +19 Vdc to +59 Vdc ( >+23 Vdc required to start)

Microsemi 4310B Cesium Frequency Standard

5 and 10 MHZ sinewave outputs
10 MHz TTL output
1 PPS sync input and 1 PPS timing outputs

Microsemi 8040CLN Rubidium Frequency Standard

Frequency of 1 MHz, 5 MHz, and 10 MHz
6 configurable outputs & 12 configurable outputs (optional)
RF and pulse outputs

Fluke 910R GPS Controlled Frequency Standard

Unique traceability feature: No need for re-calibrations
Up to 13 outputs, maximizing cost efficiency
Central or remote monitoring, management and data collection

Keysight 58503A GPS Time/Frequency Reference Receiver

6-channel, Parallel tracking
C/A code, L1 carrier
HP smart clock / HP enhanced GPS

Microsemi SyncServer S650 Frequency Standard

<15 ns RMS to UTC (USNO) through GPS
<1 x 10-12 frequency accuracy
Modular timing architecture with unique and innovative FlexPort™ technology

EndRun Technologies Meridian II Frequency Standard

1 PPS timing output accurate to < 10 nanoseconds RMS to UTC(USNO)
Frequency accuracy better than 6x10-14 (at 100,000 seconds)
No frequency steps - guaranteed

EndRun Technologies FDC3302e Frequency Distribution Chassis

10-channel, broadband sine wave
Distribution (100 kHz to 30 MHz)
Single input or auto-switching

Output Frequencies	10 MHz sine, 5 MHz sine, 1 pps pulse (10 µs wide)
Amplitude	0.5 Vrms, ±10 %
1 pps pulse amplitude	2.5 V into 50 Ω, 5 V into high-impedance loads
Phase noise (SSB)	<-130 dBc/Hz (10 Hz) <-140 dBc/Hz (100 Hz) <-150 dBc/Hz (1 kHz) <-155 dBc/Hz (10 kHz)
Spurious	<-100 dBc (100 kHz BW)
Harmonics	<-40 dBc
AC power	90-132 VAC or 175-264 VAC, 47-63 Hz, 50 W
Dimensions	8.5" × 3.5" × 13" (WHL)