8 Series
Time & Frequency Standard
The 8 Series range of precision time & frequency standards designed for use in any applications where reliable time and frequency information is required.
Features
-
Choice of clock synchronisation options (GPS, LF or Timecode)
-
Crystal oscillator for high frequency stability with option to upgrade
-
1PPS, Pulse & Timecode outputs
-
Standard or enhanced front panel
-
1 U high standard 19" rack mount
-
Equipment configuration stored in non-volatile memory
Synchronisation Source Options:
-
Satellite (GPS)
-
Terrestrial Low Frequency (MSF, DCF77, WWVB, HBG)
-
Timecode (e.g. IRIG, AFNOR, etc)
Master Clock (oscillator) Options :
-
Crystal (fitted as standard)
-
Temperature Controlled Crystal (TCXO)
-
Oven-Controlled Crystal (OCXO)
-
Precision OCXO
-
Rubidium
-
Precision Rubidium
Front Panel Options:
8 Series Model Selector
| Sync Source: |
Satellite (GPS) |
Terrestrial (LF) |
Timecode |
| Standard |
GPS8 |
RCC8 |
TCT8 |
| Enhanced |
GPS8plus |
RCC8plus |
TCT8plus |
Specifications
General
| Status Indicators: |
Power, Status, Data Valid, Satellite Tracking, Reject Code |
|
Mechanical: |
19inch rack mount, 1U high (45mm), 305mm deep |
| Alarm Status: |
Voltage free relay/TTL changeover contacts |
| Power: |
110/230V AC rear panel selectable (24V DC/ 48V DC optional) |
| Weight: |
5kg Typical |
| MTBF: |
160,000 hours (GB +25ºc) |
| EMC: |
CE compliant |
Outputs Included as Standard
| 1PPS Output: |
BNC Connector; Type TTL; On Time Rising
Edge |
| Pulse Output: |
BNC Connector; Type TTL;
Code Options: IRIG-B, 1PPM, 1PPD |
| Timecode Output: |
Modulated 1kHz carrier, BNC Connector;
Code Options: IRIG-B, NASA36, 2137, AFNOR |
| Serial Interface: |
2 ports; 9-way 'D' Socket with RS232
or RS422 interface |
Optional Additional Frequency Outputs
BNC Connector, frequency stability as per oscillator
| Output Options: |
1MHz, 5MHz, 10MHz, T1 (1.5544MHz), E1 (2.048MHz)* |
| Sinewave 1: |
2 x selected frequency (50 Ohm) |
| Sinewave 2: |
2 x selected frequency (50, 75 or 120 Ohm by jumper) |
| Squarewave: |
2 x selected frequency (75 Ohm) |
| Frame Output: |
BNC Connector, 75 Ohm Squarewave, Rate 8kHz | *NB T1 and E1 frequencies cannot be mixed
Input (Synchronisation) Options
|
GPS Reception [GPS8 and GPS8plus Models] |
| Satellite Code: |
C/C 1.023 MHz, receiver type parallel 8-channel |
| Start-up: |
<20 sec (warm), <120 sec (autonomous), automatic (cold) |
| Timing Accuracy: |
± 150 nanosecond from UTC (for holdover mode, as per oscillator) |
|
LF Reception [RCC8 and RCC8plus Models] |
| Receiver Types: |
MSF 60kHz (UK), DCF77 77.5kHz (Germany), HBG 75kHz (Switzerland), WWVB 60kHz (USA) |
| Accuracy: |
± 1 millisecond from UTC |
|
Timecode Reception [TCT8 and TCT8plus Models] |
| Timecode Options: |
IRIG-B, IRIG-E, XR3, 2137, NASA36, AFNOR |
| Accuracy: |
± 1 millisecond from received signal |
Environmental (Operation & Storage)
Instrument
Temperature: -10°C to +50°C
Humidity: Upto 95% RH(non-condensing)
Antenna
Temperature: -40°C to +85°C
Humidity: 100% RH
|