Description and Support
The HP 98628A Datacomm Interface connects to a serial peripheral, terminal, modem or computer and supports the RS-232C datacomm standard. One interface is required for each terminal, and each interface must be set to a unique select code.
HP 98628A Datacomm Interface Series 300 HP-UX Operating System Support
on Release with Model
5.0 or later all Series 300 with boot ROM Rev. A or later
Installation Procedure
Select Code and Interrupt
HP 98628A Datacomm Interface
Level Switches Default Switches
(see table for settings)
Figure 5-24.
98628A Datacomm Interface Switches
1. Play It Safe.
a. Turn your computer off and unplug the power cord.
b. Remove the Datacomm Interface from its envelope, being careful to handle the card only by its edges and metal end plate. The card may be easily damaged by electrostatic discharge (static zap).
HP 98628A Datacomm Interface
SKIP? If this is the first (or only) Datacomm Interface you are installing, you can skip to step 3. The select code is preset to 20 and need not be changed.
a. Find the set of select code and interrupt level switches by referring to Figure 5-24. Switches 0 thru 4 in this group determine the select code.
b. Set these switches to one of the five select codes given below, unless you have used them elsewhere (check the Select Code Record on the Chapter 5, "Interface Cards" tab to see which ones you have used).
Refer to the installation note that came with the interface if you need additional switch settings.
Select Code 10 Select Code 15
Select Code 17
Select Code 1 9
Figure 5-25.
HP 98628A Datacomm Interface 3. Set the Interrupt Level.
SKIP? The interface is preset to interrupt level 3. Unless you are certain that interrupt level 3 is inappropriate for your application, leave the interrupt level setting alone and skip to step 4.
which does not configure the interface to be the system console.
a. Find the set of select code and interrupt level switches by referring to Figure 5-24. Switch 7 in this group is the Remote switch.
HP 98628A Datacomm Interface Async protocol and need not be changed for most applications.
a. Find the Default switch group by referring to Figure 5-24. Switch 0 in
HP 98628A Datacomm Interface 6. Set the Baud Rate.
a. Find the Default switch group by referring to Figure 5-24. Switches 1 thru 3 in this group determine the baud rate.
b. Set the baud rate switches as follows:
• If connecting an HP 2601A printer or an HP 92205A/C Hayes Smartmodem 1200 to this interface, set the baud rate switches to 1200. To get 1200 baud, set switch 3 to 1, and set switches 2 and 1 to O. The switches will look like this:
Figure 5-26.
• If connecting a terminal or an HP 2686 LaserJet printer to this interface, set the baud rate switches to 9600. To get 9600 baud, set switches 3, 2 and 1 to 1 as shown in Figure 5-24.
• If connecting an HP 39800/01A Bar Code Reader to this interface, set the baud rate switches to 2400. To get 2400 baud, set switches 3 and 1 to 1, and set switch 2 to O. The switches will look like this:
Figure 5-27.
HP 98628A Datacomm Interface and 7 in this group determine the parity type/character length.
b. Set the parity type/character length switches as follows:
• If connecting an HP 92205A/C Hayes SmartModem 1200, set the parity type/character length switches to match the device you are communicating with. Refer to the manual that came with the interface for a list of settings.
• If connecting a terminal, an HP 2686 Laserjet printer, an HP 2601A printer, or an HP 39800/01A bar code reader, set both switches 6 and
HP 98628A Datacomm Interface even-numbered slot. Tighten the thumb screws on the metal end plate until the end plate is flush with the back of the computer.
c. If you changed the select code of the Datacomm Interface in step 2, find this number in the set of select code labels supplied with the interface.
Affix this label to the metal end plate.
d. If you have other interface or accessory cards to install, leave the cover plates off; otherwise, replace them.
10. Record the Select Code.
11. Make a note that select code 20 (or the alternate select code you chose in step 2) has been used and is no longer available. Use the "Select Code Record" form on the Chapter 5, "Interface Cards" tab for this purpose.
Verification Test
1. Plug in the power cord and turn your computer on. If you have systems on-line that the computer can boot, press the space bar a few times to suspend the automatic booting process.
2. Check the list of components displayed on the left-hand side of the screen:
• If the message, HP98628, appears in the list, you have correctly installed the Datacomm Interface .
• If the message above does not appear, repeat the installation procedure,
HP 98628A Datacomm Interface Worksheet Entry
You have now installed the HP 98628A Datacomm Interface.
The following table contains information needed to use the Datacomm Interface with the HP- UX operating system.
Copy this select code to a worksheet (worksheets are found at the end of Chapter 1, "Getting Started") or simply remember to refer here when you need it. If you changed the select code in step 2-b, write in your new select code instead of 20.
When finished, you'll be ready to install your next peripheral or interface.
Table 5-13.
Interface N arne Select Code
HP 98628A 20