ESE ES-102, Operation And Maintenance Manual, Page: 4 / 22

Page 4
phase with the GPS 1 Hz. This typically takes up to 1 hour. During this time, the 10 MHz Lock LED
flashes. The frequency then stabilizes at the center frequency of 20 MHz (it is divided by 2 for the
output). After stabilization, the 10 MHz Lock LED lights solidly. The 10 MHz output is filtered to a
sine-wave and buffered by op-amp Z14. The microcontroller generates the 1 KHz signal, which is
buffered by Z1.
HR : Option "Hr" provides a relay contact closure on the Hour and on the Half-Hour. An internal DIP switch
(switch #3 on the ES-101 logic board) can be turned “ON” if a closure on the Hour ONLY is required
(Hr & 1/2 Hr is supplied unless otherwise specified). The reed relay is rated at 10 watts maximum
resistive load (500mA switching current) and is intended for control applications only. Relay contacts
are accessible on the DB-9 connector.
Miscellaneous
ANT : A high performance antenna for challenging EMI environments is provided with this option. Nineteen
feet of cable is supplied with the antenna.
BBU : The ES-102 can be ordered with built-in Battery Back-Up/Charger System. Option ‘P’ is required. The
battery is capable of maintaining the time code outputs during a power outage for up to 4 hours.
Displays, if ordered are blank during a power outage. If continuous displays during power outages are
required, a UPS (Uninterruptable Power Supply) is suggested. Note: Turn off the battery during
shipment or any extended periods of time without main power.
DC : The ES-102 can be ordered from the factory to operate exclusively from a DC source. The voltage
applied must be in the range from +12 VDC to +36 VDC. A 2 amp fuse is provided.
J : The standard ES-102 is intended to operate from 117 VAC 50/60 Hz. If 220 VAC operation is
required, Option "J" must be specified.
UL : When Option “UL” is specified, the unit’s power transformer is external to the unit, ie: a “wall wart”
type UL/CSA approved transformer is supplied. This option allows the ES-102 to be installed in
facilities requiring “UL” (or equivalent) approved equipment.
45
ηη
S : The ES-102 can be ordered with improved accuracy. When so specified, the unit delivers a 1PPS
accuracy of <45
η
S. Also, when the 45
ηη
S option is specified, two (2) additional Setup Features are
available and are described below.
Time Delay : This program allows the ES-102 to provide an advanced or delayed time output. Time
can be ad/-400mS. Refer to the "readme.txt" file on the provided CD for more
details.
Cable Delay : This program allows the ES-102 to compensate for antenna cable delay, adjustable for
0 - 22,215 feet. Refer to the "readme.txt" file on the provided CD for more details.