Programmable Pulse (Prog Pulse); Programmable Pulse With 200-Volt Fet, Setup; Protecting The 200-Volt Fet Connection; Programmable Pulse Modes And Features - Arbiter Systems 1092A Operation Manual

8.3 Output Signal Description
the rising edge when compared with the signal from the Global Positioning System (GPS). When
configured from any of the TTL/CMOS (5-volt) drivers, it has the same drive power as the IRIG-B
and the programmable pulse. See Figure 8.2 for a comparison between unmodulated IRIG-B and
1 PPS.
8.3.5

Programmable Pulse (PROG PULSE)

Models 1092A/B/C and 1093A/B/C have an programmable pulse feature that may require some
jumper and firmware configuration. Models 1093B/C and 1092B may be configured from the front
panel and 1092A/C and 1093A must be configured through the RS-232 port. There are many
available programmable pulse modes from which to choose that include setting the pulse width and
time zone. For jumper configuration, please see Section 5.3.1, and for available modes and firmware
configuration, please see Section 7.8.
Programmable
Mode
Seconds per pulse
Pulse per hour
Pulse per day
Single trigger
Slow code
Pulse polarity
8.3.6

Programmable Pulse with 200-Volt FET, Setup

For high-level switching on the main board, choose option 1093optS001 or 1092optS001. Clocks can
provide high-level switching at either of the two digital outputs (Port 1 or 3). Connect a voltage
of up to 200 volts and pull down a signal with the open drain 200-Volt FET. Make sure to connect
the FET with suitable protection against overvoltage transients and over current conditions. To
set timing output jumpers for programmable pulse with 200-Volt FET, see Section 5.3.5. Next,
you will need to configure the type of programmable pulse through the setup menus or serial port.
See Sections 7.8 or 10.2.12.
8.3.7

Protecting the 200-Volt FET Connection

Open-drain outputs are not internally protected against overcurrent or overvoltage. Maximum peak
ratings are 100 mA and 200 V. External protections (current-limiting resistors, surge suppression
diodes, snubbers, etc.) must be provided by the user, if required, to ensure that maximum ratings
are not exceeded even momentarily. Also, consult the data sheet of the VN0120N3 FET used in
these models.
Pulse Configured Feature
X number of seconds between pulses, 0 – 60,000
Number of seconds after each hour, 0 – 3599
Hour, minute, second, fractional seconds
Day, hour, minute, second, fractional seconds
2 seconds on the minute, 4 seconds on the hour, 6 sec-
onds on the day
Positive or negative–going pulse
Table 8.3: Programmable Pulse Modes and Features
53