Honeywell Mercury User Manual page 8

Page 8
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8
Modem Layout
1. Modem Firmware:
The firmware EPROM (U20) is removable for
firmware upgrades.
2.
Thumbscrew Hole:
This hole is used when the integral modem is installed
into a Mercor ECAT. The Thumbscrew 20-8715 is
provided in the installation kit.
3. J2, DE-9S Socket Connector:
This connector is used to configure the Modem.
4.
J3, Battery Connector:
This Battery Connector can be used when the integral
modem is installed into a Mercury Electronic
Recorder or Mercor ECAT.
5. J4, Battery Connector:
This Battery Connector can be used when the integral
modem is installed into a Mercor ECAT or Mercury
Electronic Recorder.
6.
LED Status Indicators:
1 - Power
2 - OFF HOOK
3 - Carrier
4 - TX To Host
The following LED Indicators will go through three states:
5 - N/A
6 - Alarm
7 - Port "A" Select
8 - RX From Host