The TTM 01-G is a reliable and accurate GPS and GLONASS (GNSS) clock with sub-microsecond timing that is used to synchronize IEDs (Intelligent Electronic Devices) in the power industry and other industries where precise and reliable timing is required. As with all Tekron GPS clocks, the TTM 01-G has electrically isolated outputs, providing excellent noise immunity. The TTM 01-G supports both NTP/SNTP and PTP (IEEE 1588v2).

Key Features:

  • Supports GPS and GLONASS
  • Independently isolated outputs
  • Isolated power supply
  • High output power line drivers
  • Low noise characteristics due to balanced pair distribution
  • UTC and LST with user defined DST options
  • Remote configuration over Ethernet
  • Configuration security
  • Remote firmware upgrades
  • Enhanced security and encryption that exceeds NERC CIP requirements

Input/Output Signals:

  • DC IRIG-B (Un-modulated, DCLS)
  • AM IRIG-B (Modulated)
  • Supports C37.118.1
  • Serial Strings
  • User defined pulses
  • Modified Manchester
  • DCF77
  • NTP/SNTP
  • PTP (IEEE 1588 v2)

Physical

Design:
UL94-V0 polycarbonate flame retardant din rail mount case with IP40 (Ingress Protection rating).
Measurements:
(W) 72 mm x (D) 60 mm x (H) 90 mm
Weight:
0.2 Kg

GNSS Receiver

L1, C/ A code, 32 Channel Parallel-tracking receiver

Frequency:
1598 MHz
Acquisition (Sensitivity):
-155 dBm
Tracking (Sensitivity):
-160 dBm

Oscillator – TCXO

Holdover characteristics operating at 25°C:
– TCXO 1PPS drifts 0.55 ms over a 24 hour period. – Drift rate: 7 ppb per second

Standard Outputs

TTL:
1 x TTL Programmable output, 0-5 v, 150 mA (2 Pin Screw terminal). IRIG-B (B00x / B22x) time code with selectable C37.118.1 and AFNOR S87-500 extensions, DCF77 time code, User defined pulse sequences: − Repetition rates from 20ms to 24 hours − Offsets and durations from 10ms to 24 hours Timing Accuracy: <100 ns to UTC
Fiber:
1 x Fiber Programmable output, 62.5/ 125 μm, λ 820 nm, compatible with multi-mode fiber. IRIG-B (B00x / B22x) time code with selectable C37.118.1 and AFNOR S87-500 extensions, DCF77 time code, User defined pulse sequences: − Repetition rates from 20ms to 24 hours − Offsets and durations from 10ms to 24 hours Timing Accuracy: <100 ns to UTC

Additional Outputs

In addition to the Standard Outputs, one of the following output options are also available for the TTM 01-G:

TTL:
1 x TTL Programmable output, 0-5 v, 150 mA (2 Pin screw terminal). IRIG-B (B00x / B22x) time code with selectable C37.118.1 and AFNOR S87-500 extensions, DCF77 time code, User defined pulse sequences: − Repetition rates from 20ms to 24 hours − Offsets and durations from 10ms to 24 hours Timing Accuracy: <100 ns to UTC
AM IRIG-B:
1 x AM IRIG-B output, 9 Vpp, 120 ohm,(2 Pin screw terminal) Timing Accuracy: <2 μs to UTC
Serial Strings:
1 x RS232 Level serial strings output (2 Pin screw terminal). NMEA-0183 ZDA NMEA-0183 RMC IRIG J-17 Tekron A—G: Seven protocols designed for plug and play compatibility with a wide range of equipment. Timing Accuracy: <1.5 µs to UTC (Pulse or time code); <100 µs to UTC (Serial)

Ethernet UTP Connection

Physical:
1 x RJ45 10/100 Ethernet UTP connector or 1 x ST multi-mode fiber Ethernet available
General:
DHCP auto-configuration with fallback to ARP tested link-local address VLAN packet tagging Protocols Supported: ARP, UDP, ICMP, TFTP, DHCP, SNMP v1, v2c, v3 Typical timing accuracy (at the Port): <100 ns to UTC
NTP:
Stratum-1 NTP & SNTP time server Multicast & Broadcast server capability Optional MD5 authentication
SNMP
v1, v2c & v3 support can be independently enabled Configurable v1, v2c community names and securitygroups Fully configurable via SNMP v3 User-based Security Module (USM) support USM authentication methods: MD5, SHA USM privacy methods: DES, AES USM MIB support
Notifications
SNMP trap generation v1, v2c & v3 SNMPv3 traps can be authenticated & privatized via USM Syslog (RFC-3164 & 5424 verities)
PTP (IEEE 1588 v2 support)
As per Ethernet Output section plus:- PTP (IEEE1588) v2 operation GrandMaster (GNSS) or ordinary clock functions Profile selection: – Default – C37.238 Power Profile (full support) – Telecom Profile (slave only) – 1-step tx, 1-step/ 2-step rx – Layer 2 or Layer 3 mapping – Peer to Peer and End to End delay supportTiming Accuracy: <100 ns to UTC

Environmental & Electrical

Power supply options:
L = 14 – 36 Vdc M = 20 – 75 Vdc H = 90 – 300 Vdc
Power Drain:
4 w max.
Operating Temperature:
-10°C to +65°C
Humidity:
To 95% non-condensing

Programmability

Windows based configuration software is available to be downloaded from the Tekron website. User adjustable options include:

Timing & Synchronization:
Worldwide daylight savings and local time configuration using either rule based or fixed date methods. Options that allow equipment checks prior to full installation and adjustable hold-over times to increase reliability in the case of poor GNSS coverage. Adjustments to compensate for installation parameters such as delay of GNSS signal through antenna cable.
Programmable output options:
IRIG-B (B00x / B22x) time code with selectable C37.118.1 and AFNOR S87-500 extensions. DCF77 time code 1 kHz square wave User defined pulse sequences: − Repetition rates from 20 ms to 24 hours − Offsets and durations from 10 ms to 24 hours − Resolution is 10 ms.
Serial Strings (only serial version):
NMEA-0183 ZDA NMEA-0183 RMC IRIG J-17 Tekron A—G: Seven protocols designed for plug and play compatibility with a wide range of equipment.

LIGHTNING PROTECTION KIT

The antenna lightning protection kit affords additional protection through the use of an impulse suppressor installed in the antenna lead-in coax cable. In the event of a lightning-derived high voltage surge occurring on the coaxial cable, the impulse suppressor activates, short-circuiting the cable directly to the protection ground. Kit contents (all components required to install lightning protection are included): – Impulse Suppressor – Self-amalgamating tape – 2 x N-type Male crimp style connectors to match antenna cable – Crimp Tool to match the above connectors (RG59).

ANTENNA MOUNT

The antenna mounting bracket is an adjustable 500mm powder-coated steel bracket for securely mounting the timing optimized antenna option.

ANTENNA CABLE

High performance CNT-240 cable, factory-fitted with a TNC-type male connector at one end, and a SMA male connector at the other. Cables are available in standard 15, 30, or 60 meter options. Contact our sales team if you require other custom lengths.

BNC-2PIN ADAPTOR

Simplifies the connection of an IED with a BNC connector to a shielded twisted pair IRIG-B wiring loom.

TIMING OPTIMIZED GPS/GLONASS ANTENNA

Dual GPS/GLONASS antenna radome that boasts exceptional out-of-band rejection, specifically designed for industrial/static timing environments. The antenna includes a pipe-mounting plinth that is designed to fit the antenna mounting bracket accessory.