The following table gives the current drain in milliamps (1000 mA = 1 AMP) for various operating modes. The first column is a 32K RAM "standard" Model 100 and the second column after a Portable Computer Support Group Expansion RAM has been added increasing the RAM to 96K. All measurements were made using a regulated 6v power supply. The figures should be used for general guidance only in the use of your Model 100 under battery supply conditions.
. Mode: <Note> 32kRAM 96kRAM
Power Switch OFF .75mA .75mA
Switch on,POWER OFF <a> 1.60mA 1.60mA
Switch on -- MENU 62 mA 96 mA
TELCOM 88N1D 60 mA 94 mA
TELCOM M7I1E(Modem) <b> 147 mA 182 mA
Cassette on/SOUND ON 110 mA 140 mA
Cassette on/SOUND OFF<c> 108 mA 137 mA
Bar Code Wand On <d>109-114 157-170
Printer OFF <e> 72 mA 116 mA
Printer ON 63 mA 107 mA
R/S Disk Drive <f> 61 mA 100 mA
Notes:
<a> If the computer shuts down from the POWER command, the current drain is higher than if the ON-OFF switch is OFF. Remember that when putting your Model 100 away!
<b> The modem draws more current which may explain why the LOW BATTERY light comes on sooner than expected when in this mode.
<c> Other sources have recommended higher accuracy when loading programs with the SOUND OFF. It also draws less current.
<d> The range of current drains are for 'light' versus 'dark' backgrounds.
<e> If the printer cable is connected and the printer is OFF, the current drain is higher than when the printer is ON. If on battery power, don't leave your cable connected to printer unnecessarily.
<f> If the STAT setting of TELCOM is M7I1E (Modem) and the Tandy Disk Drive is attached, it will give your telephone line a pulse when you call up FLOPPY.CO. Best to disconnect your telephone connector if you are using the R/S Disk Drive.
