Reference Manual Rev 1.13 
 
004R-646-113  Page 17 
proper sealing procedures be adhered to.  Refer to Trade Label page 115, Lead 
Seals page 115, Destructible Sticker Seals page 115 and Electronic Seal page 115 
sections for more information. 
3.13.  Accessory Module connection 
Up to 4 accessory modules can be plugged into the rear of the instrument.  There 
are many types of modules which can be used.  These modules provide additional 
features such as: 
  power supply options, e.g. mains power or batteries 
  communications ports, e.g. Ethernet or RS485 networking 
  digital inputs and digital outputs, e.g. external buttons or setpoint outputs 
  expanded memory, e.g. DSD functionality. 
 
Caution: Instrument should be switched off before connecting or disconnecting 
accessory modules. 
 
Each module will come with a manual which explains the features, installation and 
use of the module.   
 
After connection, the module needs to be configured using the instrument setup 
menus.  All hardware test functions and hardware options (such as serial baud rates 
or digital input debouncing) are in the H.WARE (hardware) menu described in 
section 0 page 59.  Module resources (such as digital inputs or serial ports) are 
assigned in specific function menus.  For example, the output used by a particular 
setpoint is set in the setpoint menu.   
 
Note: Power supply options can only be connected in the left position.  Other 
modules can be connected in any position.