Hach 900 MAX - Manual (Page 82)

Page 80
Modem
8990cm.fm
Section 6
6.2 Modem
6.2.1 Modem Connection
This connection is for interfacing the optional internal modem (Cat. No. 1602)
with a standard public telephone line.
6.2.2 Modem Programming
1. From the Main Menu, select OPTIONS>ADVANCED
OPTION>COMMUNICATIONS SETUP .
Note: There is no way of independently enabling power to just the internal modem
without also enabling the power to the Cellular Communications Option if it is
present. However, this poses no problem even if the sampler is physically
connected directly to a phone line without a cellular phone.
2. Highlight Modem Setup using the UP and DOWN keys. Press ACCEPT .
3. Enable modem power by pressing the CHANGE CHOICE key. Modem
power is turned off when not in use to conserve battery power.
Table 14 Modem CPU Connections (J8)
Pin Signal Description
A Tip
B Ring
C 12 V dc
D 12 V dc Reference
11:00 AM 21 - APR - 01 COMUNICATION SETUP
SELECT
MODEM SETUP
RETURN
RS232 SETUP
11:00 AM 21 - APR - 01 MODEM SETUP
ACCEPT
CHANGE
CHOICE
MODEM POWER:
CANCEL
ENABLED
CHOICES: ENABLED, DISABLED