Appendix A Hardware Units Technical Data
3BSE 027 941 R301 143
Battery
The memory content is backed up with either an internal or external battery unit
(SB821). For back-up time see Table 33 on page 143.
Table 34 on page 143 shows Internal battery data. For external battery data,
see SB821 External Battery – AC 800M Memory Back-up on page 193.
Electro-magnetic Compatibility and Electrical Safety
PM856/PM860/TP830 meets the requirements specified in
EMC Directive 89/336/EEC.
For more information regarding EMC and safety, see Appendix D, Directive
Considerations.
LED Indicators
See Table 15 on page 109.
The figures given in Table 33 on page 143 are valid if the batteries are installed after
a normal CPU power-up, allowing for the memory back-up function to be activated.
Table 33. Back-up times for PM856/860
Source Back-up time
Internal battery Minimum 48 hours
External battery Minimum 1 month
Table 34. PM856/PM860 and TP830 – Internal battery data
Item Value
Internal battery
Battery Type Low rate lithium, 3.6V, 950 mAh
Size ANSI size 1/2 AA, IEC size 1/2 R6
Lithium content 0.3 g
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