12 Attachment: Technical Information
12.7.20.7 CPE - Configurable Port Expander (Frontend)
CPE (Configurable Port Expander)
The CPE is a configurable IO card that can autonomously generate additional output signals from the inte-
grated system clock. This module consists of a half-size standard controller card (back-end) and a dockable
port expander card (front-end), like this a wide variety of available programmable output signals and physical
connections are possible, including various electrical and optical interfaces.
This enables the CPE, in combination with the front end COI TS2 (CPE 3000 ...), to support up to 4 more
configurable interfaces that can optionally be led out as RS-232, RS-422 or RS-485 signal type. Furthermore,
up to 8 programmable outputs (PPO) can be generated and configured in the web interface. The settings of the
desired output configuration are selected in the IO Config -> Output Configuration.
It should be noted that the desired signals can be realized only with the corresponding front card.
Output Signals:
configurable:
10 MHz, PPS, IRIG DCLS, IRIG AM, PPO
Capture-Input:
active high or active low,
permitted input level +5 V (DC)
Power Supply:
+5 V (DC), 150-300 mA,
depending on the selected frontend
Environmental:
Temperature 0-50
◦
C
Humidity max. 85 %, non condensing
Status Indicators
LED St:
CPE status
LED In:
Status of the backplane’s output signals
LED A:
currently not used
LED B:
currently not used
LED Indicators
LED St:
blue
during initialisation
green
normal operating mode
LED In:
red
no signal
yellow
signal available / not sync
green flash
time sync but not accurate
green
time sync and accurate
LED A:
green
currently not used
LED B:
green
currently not used
Figure: CPE Frontends
CPE-1000: 4 config. outputs via BNC female
CPE-5000: 4 config. outputs / FO - ST connectors
CPE-2500: 4 x prog. Pulses (DFK-2) / 1 x TC AM (BNC)
IMS - LANTIME M3000
Date: 2nd July 2020
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