1 vt 4.0 operating manual © 2002 design, 2011 doc. No. 12-5213-r02 (9/6/11) vt 4.0 dive computer operating manual.
2 vt 4.0 operating manual © 2002 design, 2011 doc. No. 12-5213-r02 (9/6/11) notices................................................................................................3 features.And.Functions..............................................................4 display.Icons.......................
3 vt 4.0 operating manual © 2002 design, 2011 doc. No. 12-5213-r02 (9/6/11) notices copyright notice this operating manual is copyrighted, all rights are reserved. It may not, in whole or in part, be copied, photocopied, reproduced, translated, or reduced to any electronic medium or machine readable...
4 vt 4.0 operating manual © 2002 design, 2011 doc. No. 12-5213-r02 (9/6/11) features/functions.
5 vt 4.0 operating manual © 2002 design, 2011 doc. No. 12-5213-r02 (9/6/11) display icons fo2 is set for nitrox conservative is on log depth id temp or heading press id low battery value is fo2 tmt link dot matrix air time remaining total ascent time time is minutes surface interval value is time al...
6 vt 4.0 operating manual © 2002 design, 2011 doc. No. 12-5213-r02 (9/6/11) interactive control console the interactive control console utilizes 3 control buttons that are referred to as m, a, and s. • m (left front) - menu, mode, minus (decrease) • a (right front) - advance, add (increase). • s (ri...
7 vt 4.0 operating manual © 2002 design, 2011 doc. No. 12-5213-r02 (9/6/11) audible alarm while operating in norm or gaug mode the audible will emit 1 beep per second for 10 seconds when alarms strike, unless it is set off. During that time, the audible can be acknowledged and silenced by pressing t...
8 vt 4.0 operating manual © 2002 design, 2011 doc. No. 12-5213-r02 (9/6/11) power supply • vt 4.0 battery >> (1) 3 vdc, cr2450, lithium. • shelf life >> up to 5 years. • use life >> 100 dive hours if (1) 1 hour dive per dive day up to 300 dive hours if (3) 1 hour dives per dive day. • transmitter (e...
9 vt 4.0 operating manual © 2002 design, 2011 doc. No. 12-5213-r02 (9/6/11) norm mode >> for air and nitrox scuba activity with up to 4 gases/4 tmts. Gaug mode >> for scuba activity with up to 4 tmts. Free mode >> for breath hold diving activity with depth/time indication. If no previous dive has be...
10 vt 4.0 operating manual © 2002 design, 2011 doc. No. 12-5213-r02 (9/6/11) norm surface modes.
11 vt 4.0 operating manual © 2002 design, 2011 doc. No. 12-5213-r02 (9/6/11) norm surf main, information includes (fig. 6a/b): > si (hr:min) with time (clock) and surf icons; if no dive yet, this is time since activation. > graphic norm (operating mode). > graphic dive and number of dives completed ...
12 vt 4.0 operating manual © 2002 design, 2011 doc. No. 12-5213-r02 (9/6/11) fly/desat fly time is a count down timer that begins counting down 10 minutes after surfacing from a dive from 23:50 to 0:00 (hr:min). Desat time, also a count down timer, provides calculated time for tissue desaturation at...
13 vt 4.0 operating manual © 2002 design, 2011 doc. No. 12-5213-r02 (9/6/11) log data 1, information includes (fig. 13): > log (book) icon, and nx and (pz+) icons if they apply. > pre dive surface interval (hr:min) with time (clock) and surf icons, - : - - if # 1 (no previous dive that period). > ma...
14 vt 4.0 operating manual © 2002 design, 2011 doc. No. 12-5213-r02 (9/6/11) history mode (norm/gaug) history is a summary of data recorded during all norm and gaug dives conducted. History 1, information includes (fig. 18): > graphic total, or no dives yet (if new unit). > total dives recorded (up ...
15 vt 4.0 operating manual © 2002 design, 2011 doc. No. 12-5213-r02 (9/6/11) norm dive preview this feature provides quick access to a screen that displays up to 4 settings that can be pre selected* using the set p menu. Preview, information includes (fig. 22): > graphics nor and prev. > selections*...
16 vt 4.0 operating manual © 2002 design, 2011 doc. No. 12-5213-r02 (9/6/11) set a (alarms) menu, information includes (fig. 24a/b): > graphics set a and menu. Selections with their last set points saved include: > aud with set point (on or off), audible. > depth with set point (off, or 30 to 330 ft...
17 vt 4.0 operating manual © 2002 design, 2011 doc. No. 12-5213-r02 (9/6/11) set tmt menu, information includes (fig. 27): > graphics set and menu. Selections with their last set points saved include: > tmt 1 with set point (off, on, or set). > tmt 2 with set points (off, on, or set). > tmt 3 with s...
18 vt 4.0 operating manual © 2002 design, 2011 doc. No. 12-5213-r02 (9/6/11) set s (shortcut) menu, information includes (fig. 33): > graphics set s and menu. One item can be selected from the following menu list. That item (referred to as a shortcut) can then be accessed directly by pressing m (2 s...
19 vt 4.0 operating manual © 2002 design, 2011 doc. No. 12-5213-r02 (9/6/11) dive mode features.
20 vt 4.0 operating manual © 2002 design, 2011 doc. No. 12-5213-r02 (9/6/11) transmitter signal reception guide best. Reception. Area poor reception. Area poor reception. Area poor reception. Area poor reception. Area poor reception. Distance (greater.Than.4.Feet/1.2.Meters) proximity of the tmts (t...
21 vt 4.0 operating manual © 2002 design, 2011 doc. No. 12-5213-r02 (9/6/11) wet activation the vt 4.0 is configured with contacts that will automatically activate dive mode when the space between the contacts is bridged by a conductive material (immersed in water) and it senses a depth of 5 ft (1.5...
22 vt 4.0 operating manual © 2002 design, 2011 doc. No. 12-5213-r02 (9/6/11) deep stop (ds) when the ds selection is set on, it will trigger during norm no deco dives when you descend to 80 ft (24 m) and calculate (and continually update) a stop depth equal to 1/2 the max depth. While 10 ft (3 m) de...
23 vt 4.0 operating manual © 2002 design, 2011 doc. No. 12-5213-r02 (9/6/11) air time remaining (atr) atr is calculated using a patented algorithm that is based on a diver's individual air consumption rate and current depth. Tank pressure is measured once each second and an average rate of consumpti...
24 vt 4.0 operating manual © 2002 design, 2011 doc. No. 12-5213-r02 (9/6/11) norm dive modes.
25 vt 4.0 operating manual © 2002 design, 2011 doc. No. 12-5213-r02 (9/6/11) (default, ndc) no deco main, information includes** (fig. 44) - **which information is displayed is determined by the set d menu selection saved during setup on the surface prior to the dive. > current depth with ft (or m) ...
26 vt 4.0 operating manual © 2002 design, 2011 doc. No. 12-5213-r02 (9/6/11) deep stop preview, information includes (fig. 48) - > current depth with ft (or m) icon. > graphic deep stop with stop icon (arrows and bar). > stop depth with graphic ft (or m) and countdown time as 2:00 (min:sec). • 5 sec...
27 vt 4.0 operating manual © 2002 design, 2011 doc. No. 12-5213-r02 (9/6/11) decompression decompression mode activates when theoretical no decompression time and depth limits are exceeded. Upon entry into deco, the audible will sound during which the alarm led and full tlbg will flash. Two up arrow...
28 vt 4.0 operating manual © 2002 design, 2011 doc. No. 12-5213-r02 (9/6/11) conditional violation (cv) upon ascent above the required deco stop depth, operation will enter cv during which no off gassing credit will be given, meaning deco stop time and tat will not decrease. The audible will sound d...
29 vt 4.0 operating manual © 2002 design, 2011 doc. No. 12-5213-r02 (9/6/11) violation gauge mode (vgm) if a deco stop depth greater than 70 ft (21 m) is required, operation will enter vgm. This would be preceded by dv2. Operation would then continue in vgm during the remainder of that dive and for ...
30 vt 4.0 operating manual © 2002 design, 2011 doc. No. 12-5213-r02 (9/6/11) high o2 warning >> at 80 to 99% (240 otu). Alarm >> at 100% (300 otu). When o2 reaches the warning level; the audible will sound during which the o2 value with graphic %o2sat and an up arrow will flash (in place of dtr) unt...
31 vt 4.0 operating manual © 2002 design, 2011 doc. No. 12-5213-r02 (9/6/11) gas/tmt switching.
32 vt 4.0 operating manual © 2002 design, 2011 doc. No. 12-5213-r02 (9/6/11) overview > can only switch when a dive main screen is displayed. > cannot switch gas or tmts on surface. > cannot switch gas or tmts during sounding of alarms. > all norm dives begin with gas 1 and default to gas 1 after 10...
33 vt 4.0 operating manual © 2002 design, 2011 doc. No. 12-5213-r02 (9/6/11) gaug surface backlight (smartglo) menu surf. Main m 2 sec s 2 sec a shortcut compass s m a m 2 sec > fly log set.Menu op.Mode history vt.4.0.Id batt/tmt preview m access selection alts gaug dive s dive main m s a 2 sec 2 se...
34 vt 4.0 operating manual © 2002 design, 2011 doc. No. 12-5213-r02 (9/6/11) gaug op mode.
35 vt 4.0 operating manual © 2002 design, 2011 doc. No. 12-5213-r02 (9/6/11) gaug surf main, information includes (fig. 80): > si (hr:min) with time (clock) and surf icons; if no dive yet, this is time since activation. > graphic gaug (operating mode). > graphic dive and number of dives completed du...
36 vt 4.0 operating manual © 2002 design, 2011 doc. No. 12-5213-r02 (9/6/11) history, shared with norm (see page 14). Vt 4.0 id, same as norm (see page 14). Batt/tmt status, same as norm (see page 14). Dive preview this feature provides quick access to a screen that displays up to 4 settings that ca...
37 vt 4.0 operating manual © 2002 design, 2011 doc. No. 12-5213-r02 (9/6/11) set p (preview) menu, information includes (fig. 88): > graphics set p and menu. Using this menu, you can chose up to 4 items (set points that have been entered) for display on a preview screen that can be accessed from the...
38 vt 4.0 operating manual © 2002 design, 2011 doc. No. 12-5213-r02 (9/6/11) gaug dive main, information** includes (fig. 90a/b) - **which information is displayed on the main screen and which is on the alternates is determined by the set d menu selection saved during setup on the surface prior to t...
39 vt 4.0 operating manual © 2002 design, 2011 doc. No. 12-5213-r02 (9/6/11) free dive op mode.
40 vt 4.0 operating manual © 2002 design, 2011 doc. No. 12-5213-r02 (9/6/11) free surf main, information includes (fig. 93): > si (min:sec up to 59:59, then hr:min) with time (clock) and surf icons. > graphic free (operating mode). > graphic dive and number of dives completed during that operating p...
41 vt 4.0 operating manual © 2002 design, 2011 doc. No. 12-5213-r02 (9/6/11) the cdt will run in the background, while on the surface and during dives, until it counts down to 0:00, or it is turned off. When a set cdt reaches 0:00, the audible will sound during which the graphic cdt will be displaye...
42 vt 4.0 operating manual © 2002 design, 2011 doc. No. 12-5213-r02 (9/6/11) fig. 106 - free dive alt free dive main, information includes (fig. 105) - > (pz+) icon, if algorithm selected. > current depth with ft (or m) icon. > graphic ndc with time remaining (min), dashes ( - - ) if on the surface....
43 vt 4.0 operating manual © 2002 design, 2011 doc. No. 12-5213-r02 (9/6/11) additional information pertaining to free dive mode although breathing apparatus is not utilized for free dive activities, nitrogen tissue loading remains a factor. Nitrogen loading is calculated based upon a fixed fo2 of a...
44 vt 4.0 operating manual © 2002 design, 2011 doc. No. 12-5213-r02 (9/6/11) compass mode.
45 vt 4.0 operating manual © 2002 design, 2011 doc. No. 12-5213-r02 (9/6/11) compass mode surface backlight (smartglo) compass menu comp op. Main a surface main s m a m 2 sec > north.Mode ref.Mode. Calibrate set.Declin m s 2 sec 2 min face down until beep progress (form circle) after complete s save...
46 vt 4.0 operating manual © 2002 design, 2011 doc. No. 12-5213-r02 (9/6/11) overview > s (2 sec) to access compass op main from surface or dive main. > s (2 sec) or no button action (2 min*) to revert to surface or dive main. *during the final 15 seconds, the remaining on time is displayed. If a bu...
47 vt 4.0 operating manual © 2002 design, 2011 doc. No. 12-5213-r02 (9/6/11) > if set heading, display ref op main with the heading flashing allowing it to be set. > if reverse heading, select it as the op mode with new heading (180° opposite of reference heading set). Set reference heading, informa...
48 vt 4.0 operating manual © 2002 design, 2011 doc. No. 12-5213-r02 (9/6/11) declination magnetic declination is taken from numbers provided on maps or charts that apply to a specific location. The numbers represent the easterly or westerly angular difference (declination) in degrees between magneti...
49 vt 4.0 operating manual © 2002 design, 2011 doc. No. 12-5213-r02 (9/6/11) reference caution: when the procedure provided in this section is used to change the vt 4.0 battery, you must be sure that the case o-ring is not pinched and that the vt 4.0 is water tight before conducting diving actvities...
50 vt 4.0 operating manual © 2002 design, 2011 doc. No. 12-5213-r02 (9/6/11) pc interface the vt 4.0 is configured with a data port (fig. 130a) that enables it to be connected to a pc through a usb port using a special interface cable supplied or available as an optional accessory. A usb driver is p...
51 vt 4.0 operating manual © 2002 design, 2011 doc. No. 12-5213-r02 (9/6/11) care and cleaning protect your unit from shock, excessive temperatures, exposure to chemicals, and tampering. Protect the lens against scratches with a instrument lens protector. Small scratches will naturally disappear und...
52 vt 4.0 operating manual © 2002 design, 2011 doc. No. 12-5213-r02 (9/6/11) battery removal • remove the retaining bar located across the lower portion of the battery (fig. 135a). • remove the cover o-ring. Do not use tools • using care not to damage the battery contacts (fig. 135 b/c), slide the b...
53 vt 4.0 operating manual © 2002 design, 2011 doc. No. 12-5213-r02 (9/6/11) transmitter battery removal locate the battery cover on the end of the housing: • apply a coin to the recessed slot of the cover and turn it counter clockwise out of the housing (fig. 141). • remove the battery and discard ...
54 vt 4.0 operating manual © 2002 design, 2011 doc. No. 12-5213-r02 (9/6/11) altitude sensing and adjustment prior to the first dive of a series of repetitive dives, altitude (i.E., ambient pressure) is measured upon activation then every 15 minutes until a dive is made. > measurements are only take...
55 vt 4.0 operating manual © 2002 design, 2011 doc. No. 12-5213-r02 (9/6/11) technical data.
56 vt 4.0 operating manual © 2002 design, 2011 doc. No. 12-5213-r02 (9/6/11) pz+ algorithm >> ndls (minutes) at altitude (imperial) altitude 0 3001 4001 5001 6001 7001 8001 9001 10001 11001 12001 13001 (feet) to to to to to to to to to to to to 3000 4000 5000 6000 7000 8000 9000 10000 11000 12000 13...
57 vt 4.0 operating manual © 2002 design, 2011 doc. No. 12-5213-r02 (9/6/11) can.Be.Used.As • dive computer (air or nitrox) with up to 4 gases up to 100% o2 and 4 transmitters. • digital depth gauge/timer with up to 4 transmitters. • free dive (breath hold) activity with depth gauge/countdown timer....
58 vt 4.0 operating manual © 2002 design, 2011 doc. No. 12-5213-r02 (9/6/11) numeric.Displays:. Range: resolution: • time of day 0:00 to 23:59 hr:min 1 minute • pci countdown timer 1:59 to 0:00 min:sec 1 second • altitude level sea, el-2 to el-7 1 (level) • time to fly 23:50 to 0:00 hr:min 1 minute ...
59 vt 4.0 operating manual © 2002 design, 2011 doc. No. 12-5213-r02 (9/6/11) inspection / service record vt 4.0 serial number: ___________________________________________________________________________________________________ vt 4.0 firmware rev: ____________________________________________________...
60 vt 4.0 operating manual © 2002 design, 2011 doc. No. 12-5213-r02 (9/6/11) vt 4.0 dive computer operating manual.